diff --git a/database.sql b/database.sql
index a64094732..bcd8c9843 100644
--- a/database.sql
+++ b/database.sql
@@ -1,9 +1,37 @@
 -- ------------------------------------------
 -- Friendica 2020.06-dev (Red Hot Poker)
--- DB_UPDATE_VERSION 1348
+-- DB_UPDATE_VERSION 1350
 -- ------------------------------------------
 
 
+--
+-- TABLE gserver
+--
+CREATE TABLE IF NOT EXISTS `gserver` (
+	`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
+	`url` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`nurl` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`version` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`site_name` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`info` text COMMENT '',
+	`register_policy` tinyint NOT NULL DEFAULT 0 COMMENT '',
+	`registered-users` int unsigned NOT NULL DEFAULT 0 COMMENT 'Number of registered users',
+	`directory-type` tinyint DEFAULT 0 COMMENT 'Type of directory service (Poco, Mastodon)',
+	`poco` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`noscrape` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`network` char(4) NOT NULL DEFAULT '' COMMENT '',
+	`platform` varchar(255) NOT NULL DEFAULT '' COMMENT '',
+	`relay-subscribe` boolean NOT NULL DEFAULT '0' COMMENT 'Has the server subscribed to the relay system',
+	`relay-scope` varchar(10) NOT NULL DEFAULT '' COMMENT 'The scope of messages that the server wants to get',
+	`detection-method` tinyint unsigned COMMENT 'Method that had been used to detect that server',
+	`created` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT '',
+	`last_poco_query` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
+	`last_contact` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
+	`last_failure` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
+	 PRIMARY KEY(`id`),
+	 UNIQUE INDEX `nurl` (`nurl`(190))
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Global servers';
+
 --
 -- TABLE clients
 --
@@ -87,6 +115,7 @@ CREATE TABLE IF NOT EXISTS `contact` (
 	`unsearchable` boolean NOT NULL DEFAULT '0' COMMENT 'Contact prefers to not be searchable',
 	`sensitive` boolean NOT NULL DEFAULT '0' COMMENT 'Contact posts sensitive content',
 	`baseurl` varchar(255) DEFAULT '' COMMENT 'baseurl of the contact',
+	`gsid` int unsigned COMMENT 'Global Server ID',
 	`reason` text COMMENT '',
 	`closeness` tinyint unsigned NOT NULL DEFAULT 99 COMMENT '',
 	`info` mediumtext COMMENT '',
@@ -108,7 +137,9 @@ CREATE TABLE IF NOT EXISTS `contact` (
 	 INDEX `nurl_uid` (`nurl`(32),`uid`),
 	 INDEX `nick_uid` (`nick`(32),`uid`),
 	 INDEX `dfrn-id` (`dfrn-id`(64)),
-	 INDEX `issued-id` (`issued-id`(64))
+	 INDEX `issued-id` (`issued-id`(64)),
+	 INDEX `gsid` (`gsid`),
+	FOREIGN KEY (`gsid`) REFERENCES `gserver` (`id`) ON UPDATE RESTRICT ON DELETE RESTRICT
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='contact table';
 
 --
@@ -210,6 +241,7 @@ CREATE TABLE IF NOT EXISTS `apcontact` (
 	`alias` varchar(255) COMMENT '',
 	`pubkey` text COMMENT '',
 	`baseurl` varchar(255) COMMENT 'baseurl of the ap contact',
+	`gsid` int unsigned COMMENT 'Global Server ID',
 	`generator` varchar(255) COMMENT 'Name of the contact\'s system',
 	`following_count` int unsigned DEFAULT 0 COMMENT 'Number of following contacts',
 	`followers_count` int unsigned DEFAULT 0 COMMENT 'Number of followers',
@@ -218,7 +250,9 @@ CREATE TABLE IF NOT EXISTS `apcontact` (
 	 PRIMARY KEY(`url`),
 	 INDEX `addr` (`addr`(32)),
 	 INDEX `alias` (`alias`(190)),
-	 INDEX `url` (`followers`(190))
+	 INDEX `followers` (`followers`(190)),
+	 INDEX `gsid` (`gsid`),
+	FOREIGN KEY (`gsid`) REFERENCES `gserver` (`id`) ON UPDATE RESTRICT ON DELETE RESTRICT
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='ActivityPub compatible contacts - used in the ActivityPub implementation';
 
 --
@@ -463,13 +497,16 @@ CREATE TABLE IF NOT EXISTS `gcontact` (
 	`alias` varchar(255) NOT NULL DEFAULT '' COMMENT '',
 	`generation` tinyint unsigned NOT NULL DEFAULT 0 COMMENT '',
 	`server_url` varchar(255) NOT NULL DEFAULT '' COMMENT 'baseurl of the contacts server',
+	`gsid` int unsigned COMMENT 'Global Server ID',
 	 PRIMARY KEY(`id`),
 	 UNIQUE INDEX `nurl` (`nurl`(190)),
 	 INDEX `name` (`name`(64)),
 	 INDEX `nick` (`nick`(32)),
 	 INDEX `addr` (`addr`(64)),
 	 INDEX `hide_network_updated` (`hide`,`network`,`updated`),
-	 INDEX `updated` (`updated`)
+	 INDEX `updated` (`updated`),
+	 INDEX `gsid` (`gsid`),
+	FOREIGN KEY (`gsid`) REFERENCES `gserver` (`id`) ON UPDATE RESTRICT ON DELETE RESTRICT
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='global contacts';
 
 --
@@ -523,33 +560,6 @@ CREATE TABLE IF NOT EXISTS `group_member` (
 	 UNIQUE INDEX `gid_contactid` (`gid`,`contact-id`)
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='privacy groups, member info';
 
---
--- TABLE gserver
---
-CREATE TABLE IF NOT EXISTS `gserver` (
-	`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
-	`url` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`nurl` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`version` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`site_name` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`info` text COMMENT '',
-	`register_policy` tinyint NOT NULL DEFAULT 0 COMMENT '',
-	`registered-users` int unsigned NOT NULL DEFAULT 0 COMMENT 'Number of registered users',
-	`directory-type` tinyint DEFAULT 0 COMMENT 'Type of directory service (Poco, Mastodon)',
-	`poco` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`noscrape` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`network` char(4) NOT NULL DEFAULT '' COMMENT '',
-	`platform` varchar(255) NOT NULL DEFAULT '' COMMENT '',
-	`relay-subscribe` boolean NOT NULL DEFAULT '0' COMMENT 'Has the server subscribed to the relay system',
-	`relay-scope` varchar(10) NOT NULL DEFAULT '' COMMENT 'The scope of messages that the server wants to get',
-	`created` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT '',
-	`last_poco_query` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
-	`last_contact` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
-	`last_failure` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
-	 PRIMARY KEY(`id`),
-	 UNIQUE INDEX `nurl` (`nurl`(190))
-) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Global servers';
-
 --
 -- TABLE gserver-tag
 --
diff --git a/src/Database/PostUpdate.php b/src/Database/PostUpdate.php
index 73ac374ac..a4fadce49 100644
--- a/src/Database/PostUpdate.php
+++ b/src/Database/PostUpdate.php
@@ -25,6 +25,7 @@ use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\DI;
 use Friendica\Model\Contact;
+use Friendica\Model\GServer;
 use Friendica\Model\Item;
 use Friendica\Model\ItemURI;
 use Friendica\Model\PermissionSet;
@@ -86,6 +87,15 @@ class PostUpdate
 		if (!self::update1347()) {
 			return false;
 		}
+		if (!self::update1348()) {
+			return false;
+		}
+		if (!self::update1349()) {
+			return false;
+		}
+		if (!self::update1350()) {
+			return false;
+		}
 
 		return true;
 	}
@@ -870,4 +880,163 @@ class PostUpdate
 
 		return false;
 	}
+
+	/**
+	 * update the "gsid" (global server id) field in the contact table 
+	 *
+	 * @return bool "true" when the job is done
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 */
+	private static function update1348()
+	{
+		// Was the script completed?
+		if (DI::config()->get("system", "post_update_version") >= 1348) {
+			return true;
+		}
+
+		$id = DI::config()->get("system", "post_update_version_1348_id", 0);
+
+		Logger::info('Start', ['contact' => $id]);
+
+		$start_id = $id;
+		$rows = 0;
+		$condition = ["`id` > ? AND `gsid` IS NULL AND `baseurl` != '' AND NOT `baseurl` IS NULL", $id];
+		$params = ['order' => ['id'], 'limit' => 10000];
+		$contacts = DBA::select('contact', ['id', 'baseurl'], $condition, $params);
+
+		if (DBA::errorNo() != 0) {
+			Logger::error('Database error', ['no' => DBA::errorNo(), 'message' => DBA::errorMessage()]);
+			return false;
+		}
+
+		while ($contact = DBA::fetch($contacts)) {
+			$id = $contact['id'];
+
+			DBA::update('contact',
+				['gsid' => GServer::getID($contact['baseurl']), 'baseurl' => GServer::cleanURL($contact['baseurl'])],
+				['id' => $contact['id']]);
+
+			++$rows;
+		}
+		DBA::close($contacts);
+
+		DI::config()->set("system", "post_update_version_1348_id", $id);
+
+		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
+
+		if ($start_id == $id) {
+			DI::config()->set("system", "post_update_version", 1348);
+			Logger::info('Done');
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * update the "gsid" (global server id) field in the apcontact table 
+	 *
+	 * @return bool "true" when the job is done
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 */
+	private static function update1349()
+	{
+		// Was the script completed?
+		if (DI::config()->get("system", "post_update_version") >= 1349) {
+			return true;
+		}
+
+		$id = DI::config()->get("system", "post_update_version_1349_id", 0);
+
+		Logger::info('Start', ['apcontact' => $id]);
+
+		$start_id = $id;
+		$rows = 0;
+		$condition = ["`url` > ? AND `gsid` IS NULL AND `baseurl` != '' AND NOT `baseurl` IS NULL", $id];
+		$params = ['order' => ['url'], 'limit' => 10000];
+		$apcontacts = DBA::select('apcontact', ['url', 'baseurl'], $condition, $params);
+
+		if (DBA::errorNo() != 0) {
+			Logger::error('Database error', ['no' => DBA::errorNo(), 'message' => DBA::errorMessage()]);
+			return false;
+		}
+
+		while ($apcontact = DBA::fetch($apcontacts)) {
+			$id = $apcontact['url'];
+
+			DBA::update('apcontact',
+				['gsid' => GServer::getID($apcontact['baseurl']), 'baseurl' => GServer::cleanURL($apcontact['baseurl'])],
+				['url' => $apcontact['url']]);
+
+			++$rows;
+		}
+		DBA::close($apcontacts);
+
+		DI::config()->set("system", "post_update_version_1349_id", $id);
+
+		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
+
+		if ($start_id == $id) {
+			DI::config()->set("system", "post_update_version", 1349);
+			Logger::info('Done');
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * update the "gsid" (global server id) field in the gcontact table 
+	 *
+	 * @return bool "true" when the job is done
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 */
+	private static function update1350()
+	{
+		// Was the script completed?
+		if (DI::config()->get("system", "post_update_version") >= 1350) {
+			return true;
+		}
+
+		$id = DI::config()->get("system", "post_update_version_1350_id", 0);
+
+		Logger::info('Start', ['gcontact' => $id]);
+
+		$start_id = $id;
+		$rows = 0;
+		$condition = ["`id` > ? AND `gsid` IS NULL AND `server_url` != '' AND NOT `server_url` IS NULL", $id];
+		$params = ['order' => ['id'], 'limit' => 10000];
+		$gcontacts = DBA::select('gcontact', ['id', 'server_url'], $condition, $params);
+
+		if (DBA::errorNo() != 0) {
+			Logger::error('Database error', ['no' => DBA::errorNo(), 'message' => DBA::errorMessage()]);
+			return false;
+		}
+
+		while ($gcontact = DBA::fetch($gcontacts)) {
+			$id = $gcontact['id'];
+
+			DBA::update('gcontact',
+				['gsid' => GServer::getID($gcontact['server_url']), 'server_url' => GServer::cleanURL($gcontact['server_url'])],
+				['id' => $gcontact['id']]);
+
+			++$rows;
+		}
+		DBA::close($gcontacts);
+
+		DI::config()->set("system", "post_update_version_1350_id", $id);
+
+		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
+
+		if ($start_id == $id) {
+			DI::config()->set("system", "post_update_version", 1350);
+			Logger::info('Done');
+			return true;
+		}
+
+		return false;
+	}
 }
diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index ec33864f4..73b6143b4 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -291,6 +291,12 @@ class APContact
 			$apcontact['baseurl'] = null;
 		}
 
+		if (!empty($apcontact['baseurl']) && empty($fetched_contact['gsid'])) {
+			$apcontact['gsid'] = GServer::getID($apcontact['baseurl']);
+		} elseif (!empty($fetched_contact['gsid'])) {
+			$apcontact['gsid'] = $fetched_contact['gsid'];
+		}
+
 		if ($apcontact['url'] == $apcontact['alias']) {
 			$apcontact['alias'] = null;
 		}
diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 0d321189f..ee49d9b75 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -1530,10 +1530,6 @@ class Contact
 
 		if (empty($data)) {
 			$data = Probe::uri($url, "", $uid);
-			// Ensure that there is a gserver entry
-			if (!empty($data['baseurl']) && ($data['network'] != Protocol::PHANTOM)) {
-				GServer::check($data['baseurl']);
-			}
 		}
 
 		// Take the default values when probing failed
@@ -1575,6 +1571,7 @@ class Contact
 				'confirm'   => $data['confirm'] ?? '',
 				'poco'      => $data['poco'] ?? '',
 				'baseurl'   => $data['baseurl'] ?? '',
+				'gsid'      => $data['gsid'] ?? null,
 				'name-date' => DateTimeFormat::utcNow(),
 				'uri-date'  => DateTimeFormat::utcNow(),
 				'avatar-date' => DateTimeFormat::utcNow(),
@@ -2082,7 +2079,7 @@ class Contact
 
 		$fields = ['uid', 'avatar', 'name', 'nick', 'location', 'keywords', 'about',
 			'unsearchable', 'url', 'addr', 'batch', 'notify', 'poll', 'request', 'confirm', 'poco',
-			'network', 'alias', 'baseurl', 'forum', 'prv', 'contact-type', 'pubkey'];
+			'network', 'alias', 'baseurl', 'gsid', 'forum', 'prv', 'contact-type', 'pubkey'];
 		$contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
 		if (!DBA::isResult($contact)) {
 			return false;
@@ -2415,6 +2412,7 @@ class Contact
 				'nick'    => $ret['nick'],
 				'network' => $ret['network'],
 				'baseurl' => $ret['baseurl'],
+				'gsid'    => $ret['gsid'] ?? null,
 				'protocol' => $protocol,
 				'pubkey'  => $ret['pubkey'],
 				'rel'     => $new_relation,
diff --git a/src/Model/GContact.php b/src/Model/GContact.php
index becfd61b0..3da5513b5 100644
--- a/src/Model/GContact.php
+++ b/src/Model/GContact.php
@@ -690,7 +690,7 @@ class GContact
 		}
 
 		$public_contact = DBA::selectFirst('gcontact', [
-			'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords',
+			'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords', 'gsid',
 			'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
 		], ['id' => $gcontact_id]);
 
@@ -752,6 +752,10 @@ class GContact
 			$contact['server_url'] = Strings::normaliseLink($contact['server_url']);
 		}
 
+		if (!empty($contact['server_url']) && empty($contact['gsid'])) {
+			$contact['gsid'] = GServer::getID($contact['server_url']);
+		}
+
 		if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($contact['nick'])) {
 			$hostname = str_replace('http://', '', $contact['server_url']);
 			$contact['addr'] = $contact['nick'] . '@' . $hostname;
@@ -791,7 +795,8 @@ class GContact
 				'notify' => $contact['notify'], 'url' => $contact['url'],
 				'location' => $contact['location'], 'about' => $contact['about'],
 				'generation' => $contact['generation'], 'updated' => $contact['updated'],
-				'server_url' => $contact['server_url'], 'connect' => $contact['connect']
+				'server_url' => $contact['server_url'], 'connect' => $contact['connect'],
+				'gsid' => $contact['gsid']
 			];
 
 			DBA::update('gcontact', $updated, $condition, $fields);
@@ -1016,7 +1021,7 @@ class GContact
 		$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
 			'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
 			'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
-			'baseurl', 'sensitive', 'unsearchable'];
+			'baseurl', 'gsid', 'sensitive', 'unsearchable'];
 
 		$contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
 		if (!DBA::isResult($contact)) {
@@ -1026,7 +1031,7 @@ class GContact
 		$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'generation',
 			'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
 			'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
-			'server_url', 'nsfw', 'hide', 'id'];
+			'server_url', 'gsid', 'nsfw', 'hide', 'id'];
 
 		$old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
 		$do_insert = !DBA::isResult($old_gcontact);
@@ -1037,7 +1042,7 @@ class GContact
 		$gcontact = [];
 
 		// These fields are identical in both contact and gcontact
-		$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
+		$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'gsid',
 			'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated'];
 
 		foreach ($fields as $field) {
diff --git a/src/Model/GServer.php b/src/Model/GServer.php
index ba60d8965..560c0831d 100644
--- a/src/Model/GServer.php
+++ b/src/Model/GServer.php
@@ -34,6 +34,7 @@ use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Strings;
 use Friendica\Util\XML;
 use Friendica\Core\Logger;
+use Friendica\Core\System;
 use Friendica\Protocol\PortableContact;
 use Friendica\Protocol\Diaspora;
 use Friendica\Network\Probe;
@@ -47,6 +48,57 @@ class GServer
 	const DT_NONE = 0;
 	const DT_POCO = 1;
 	const DT_MASTODON = 2;
+
+	// Methods to detect server types
+
+	// Non endpoint specific methods
+	const DETECT_MANUAL = 0;
+	const DETECT_HEADER = 1;
+	const DETECT_BODY = 2;
+
+	// Implementation specific endpoints
+	const DETECT_FRIENDIKA = 10;
+	const DETECT_FRIENDICA = 11;
+	const DETECT_STATUSNET = 12;
+	const DETECT_GNUSOCIAL = 13;
+	const DETECT_CONFIG_JSON = 14; // Statusnet, GNU Social, Older Hubzilla/Redmatrix
+	const DETECT_SITEINFO_JSON = 15; // Newer Hubzilla
+	const DETECT_MASTODON_API = 16;
+	const DETECT_STATUS_PHP = 17; // Nextcloud
+
+	// Standardized endpoints
+	const DETECT_STATISTICS_JSON = 100;
+	const DETECT_NODEINFO_1 = 101;
+	const DETECT_NODEINFO_2 = 102;
+
+	/**
+	 * Get the ID for the given server URL
+	 *
+	 * @param string $url
+	 * @param boolean $no_check Don't check if the server hadn't been found
+	 * @return int gserver id
+	 */
+	public static function getID(string $url, bool $no_check = false)
+	{
+		if (empty($url)) {
+			return null;
+		}
+
+		$url = self::cleanURL($url);
+
+		$gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
+		if (DBA::isResult($gserver)) {
+			Logger::info('Got ID for URL', ['id' => $gserver['id'], 'url' => $url, 'callstack' => System::callstack(20)]);
+			return $gserver['id'];
+		}
+
+		if ($no_check || !self::check($url)) {
+			return null;
+		}
+	
+		return self::getID($url, true);
+	}
+
 	/**
 	 * Checks if the given server is reachable
 	 *
@@ -137,9 +189,7 @@ class GServer
 	 */
 	public static function check(string $server_url, string $network = '', bool $force = false, bool $only_nodeinfo = false)
 	{
-		// Unify the server address
-		$server_url = trim($server_url, '/');
-		$server_url = str_replace('/index.php', '', $server_url);
+		$server_url = self::cleanURL($server_url);
 
 		if ($server_url == '') {
 			return false;
@@ -186,7 +236,8 @@ class GServer
 	private static function setFailure(string $url)
 	{
 		if (DBA::exists('gserver', ['nurl' => Strings::normaliseLink($url)])) {
-			DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]);
+			DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow(), 'detection-method' => null],
+			['nurl' => Strings::normaliseLink($url)]);
 			Logger::info('Set failed status for existing server', ['url' => $url]);
 			return;
 		}
@@ -196,6 +247,38 @@ class GServer
 		Logger::info('Set failed status for new server', ['url' => $url]);
 	}
 
+	/**
+	 * Remove unwanted content from the given URL
+	 *
+	 * @param string $url
+	 * @return string cleaned URL
+	 */
+	public static function cleanURL(string $url)
+	{
+		$url = trim($url, '/');
+		$url = str_replace('/index.php', '', $url);
+
+		$urlparts = parse_url($url);
+		unset($urlparts['user']);
+		unset($urlparts['pass']);
+		unset($urlparts['query']);
+		unset($urlparts['fragment']);
+		return Network::unparseURL($urlparts);
+	}
+
+	/**
+	 * Return the base URL
+	 *
+	 * @param string $url
+	 * @return string base URL
+	 */
+	private static function getBaseURL(string $url)
+	{
+		$urlparts = parse_url(self::cleanURL($url));
+		unset($urlparts['path']);
+		return Network::unparseURL($urlparts);
+	}
+
 	/**
 	 * Detect server data (type, protocol, version number, ...)
 	 * The detected data is then updated or inserted in the gserver table.
@@ -209,17 +292,15 @@ class GServer
 	public static function detect(string $url, string $network = '', bool $only_nodeinfo = false)
 	{
 		Logger::info('Detect server type', ['server' => $url]);
-		$serverdata = [];
+		$serverdata = ['detection-method' => self::DETECT_MANUAL];
 
 		$original_url = $url;
 
 		// Remove URL content that is not supposed to exist for a server url
-		$urlparts = parse_url($url);
-		unset($urlparts['user']);
-		unset($urlparts['pass']);
-		unset($urlparts['query']);
-		unset($urlparts['fragment']);
-		$url = Network::unparseURL($urlparts);
+		$url = self::cleanURL($url);
+
+		// Get base URL
+		$baseurl = self::getBaseURL($url);
 
 		// If the URL missmatches, then we mark the old entry as failure
 		if ($url != $original_url) {
@@ -249,18 +330,53 @@ class GServer
 		// If that didn't work out well, we use some protocol specific endpoints
 		// For Friendica and Zot based networks we have to dive deeper to reveal more details
 		if (empty($nodeinfo['network']) || in_array($nodeinfo['network'], [Protocol::DFRN, Protocol::ZOT])) {
+			if (!empty($nodeinfo['detection-method'])) {
+				$serverdata['detection-method'] = $nodeinfo['detection-method'];
+			}
+
 			// Fetch the landing page, possibly it reveals some data
 			if (empty($nodeinfo['network'])) {
-				$curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout]);
+				if ($baseurl == $url) {
+					$basedata = $serverdata;
+				} else {
+					$basedata = ['detection-method' => self::DETECT_MANUAL];
+				}
+
+				$curlResult = Network::curl($baseurl, false, ['timeout' => $xrd_timeout]);
 				if ($curlResult->isSuccess()) {
-					$serverdata = self::analyseRootHeader($curlResult, $serverdata);
-					$serverdata = self::analyseRootBody($curlResult, $serverdata, $url);
+					$basedata = self::analyseRootHeader($curlResult, $basedata);
+					$basedata = self::analyseRootBody($curlResult, $basedata, $baseurl);
 				}
 
 				if (!$curlResult->isSuccess() || empty($curlResult->getBody()) || self::invalidBody($curlResult->getBody())) {
 					self::setFailure($url);
 					return false;
 				}
+
+				if ($baseurl == $url) {
+					$serverdata = $basedata;
+				} else {
+					// When the base path doesn't seem to contain a social network we try the complete path.
+					// Most detectable system have to be installed in the root directory.
+					// We checked the base to avoid false positives.
+					$curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout]);
+					if ($curlResult->isSuccess()) {
+						$urldata = self::analyseRootHeader($curlResult, $serverdata);
+						$urldata = self::analyseRootBody($curlResult, $urldata, $url);
+
+						$comparebase = $basedata;
+						unset($comparebase['info']);
+						unset($comparebase['site_name']);
+						$compareurl = $urldata;
+						unset($compareurl['info']);
+						unset($compareurl['site_name']);
+
+						// We assume that no one will install the identical system in the root and a subfolder
+						if (!empty(array_diff($comparebase, $compareurl))) {
+							$serverdata = $urldata;
+						}
+					}
+				}
 			}
 
 			if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB)) {
@@ -296,6 +412,8 @@ class GServer
 			if (empty($serverdata['network'])) {
 				$serverdata = self::detectGNUSocial($url, $serverdata);
 			}
+
+			$serverdata = array_merge($nodeinfo, $serverdata);
 		} else {
 			$serverdata = $nodeinfo;
 		}
@@ -326,12 +444,7 @@ class GServer
 			$registeredUsers = 1;
 		}
 
-		if ($serverdata['network'] != Protocol::PHANTOM) {
-			$gcontacts = DBA::count('gcontact', ['server_url' => [$url, $serverdata['nurl']]]);
-			$apcontacts = DBA::count('apcontact', ['baseurl' => [$url, $serverdata['nurl']]]);
-			$contacts = DBA::count('contact', ['uid' => 0, 'baseurl' => [$url, $serverdata['nurl']]]);
-			$serverdata['registered-users'] = max($gcontacts, $apcontacts, $contacts, $registeredUsers);
-		} else {
+		if ($serverdata['network'] == Protocol::PHANTOM) {
 			$serverdata['registered-users'] = $registeredUsers;
 			$serverdata = self::detectNetworkViaContacts($url, $serverdata);
 		}
@@ -342,6 +455,7 @@ class GServer
 		if (!DBA::isResult($gserver)) {
 			$serverdata['created'] = DateTimeFormat::utcNow();
 			$ret = DBA::insert('gserver', $serverdata);
+			$id = DBA::lastInsertId();
 		} else {
 			// Don't override the network with 'unknown' when there had been a valid entry before
 			if (($serverdata['network'] == Protocol::PHANTOM) && !empty($gserver['network'])) {
@@ -349,11 +463,26 @@ class GServer
 			}
 
 			$ret = DBA::update('gserver', $serverdata, ['nurl' => $serverdata['nurl']]);
+			$gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => $serverdata['nurl']]);
+			if (DBA::isResult($gserver)) {
+				$id = $gserver['id'];
+			}
+		}
+
+		if (!empty($id) && ($serverdata['network'] != Protocol::PHANTOM)) {
+			$gcontacts = DBA::count('gcontact', ['gsid' => $id]);
+			$apcontacts = DBA::count('apcontact', ['gsid' => $id]);
+			$contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id]);
+			$max_users = max($gcontacts, $apcontacts, $contacts, $registeredUsers);
+			if ($max_users > $registeredUsers) {
+				Logger::info('Update registered users', ['id' => $id, 'url' => $serverdata['nurl'], 'registered-users' => $max_users]);
+				DBA::update('gserver', ['registered-users' => $max_users], ['id' => $id]);
+			}
 		}
 
 		if (!empty($serverdata['network']) && in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
-                        self::discoverRelay($url);
-                }
+			self::discoverRelay($url);
+		}
 
 		return $ret;
 	}
@@ -459,7 +588,7 @@ class GServer
 			return [];
 		}
 
-		$serverdata = [];
+		$serverdata = ['detection-method' => self::DETECT_STATISTICS_JSON];
 
 		if (!empty($data['version'])) {
 			$serverdata['version'] = $data['version'];
@@ -560,7 +689,6 @@ class GServer
 	private static function parseNodeinfo1(string $nodeinfo_url)
 	{
 		$curlResult = Network::curl($nodeinfo_url);
-
 		if (!$curlResult->isSuccess()) {
 			return [];
 		}
@@ -571,9 +699,8 @@ class GServer
 			return [];
 		}
 
-		$server = [];
-
-		$server['register_policy'] = Register::CLOSED;
+		$server = ['detection-method' => self::DETECT_NODEINFO_1,
+			'register_policy' => Register::CLOSED];
 
 		if (!empty($nodeinfo['openRegistrations'])) {
 			$server['register_policy'] = Register::OPEN;
@@ -648,9 +775,8 @@ class GServer
 			return [];
 		}
 
-		$server = [];
-
-		$server['register_policy'] = Register::CLOSED;
+		$server = ['detection-method' => self::DETECT_NODEINFO_2,
+			'register_policy' => Register::CLOSED];
 
 		if (!empty($nodeinfo['openRegistrations'])) {
 			$server['register_policy'] = Register::OPEN;
@@ -725,6 +851,10 @@ class GServer
 			return $serverdata;
 		}
 
+		if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+			$serverdata['detection-method'] = self::DETECT_SITEINFO_JSON;
+		}
+
 		if (!empty($data['url'])) {
 			$serverdata['platform'] = strtolower($data['platform']);
 			$serverdata['version'] = $data['version'];
@@ -934,7 +1064,6 @@ class GServer
 	private static function detectNextcloud(string $url, array $serverdata)
 	{
 		$curlResult = Network::curl($url . '/status.php');
-
 		if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
 			return $serverdata;
 		}
@@ -948,6 +1077,10 @@ class GServer
 			$serverdata['platform'] = 'nextcloud';
 			$serverdata['version'] = $data['version'];
 			$serverdata['network'] = Protocol::ACTIVITYPUB;
+
+			if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+				$serverdata['detection-method'] = self::DETECT_STATUS_PHP;
+			}
 		}
 
 		return $serverdata;
@@ -964,7 +1097,6 @@ class GServer
 	private static function detectMastodonAlikes(string $url, array $serverdata)
 	{
 		$curlResult = Network::curl($url . '/api/v1/instance');
-
 		if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
 			return $serverdata;
 		}
@@ -974,6 +1106,10 @@ class GServer
 			return $serverdata;
 		}
 
+		if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+			$serverdata['detection-method'] = self::DETECT_MASTODON_API;
+		}
+
 		if (!empty($data['version'])) {
 			$serverdata['platform'] = 'mastodon';
 			$serverdata['version'] = $data['version'] ?? '';
@@ -1031,7 +1167,7 @@ class GServer
 		}
 
 		$data = json_decode($curlResult->getBody(), true);
-		if (empty($data)) {
+		if (empty($data) || empty($data['site'])) {
 			return $serverdata;
 		}
 
@@ -1079,11 +1215,16 @@ class GServer
 		}
 
 		if (!$closed && !$private and $inviteonly) {
-			$register_policy = Register::APPROVE;
+			$serverdata['register_policy'] = Register::APPROVE;
 		} elseif (!$closed && !$private) {
-			$register_policy = Register::OPEN;
+			$serverdata['register_policy'] = Register::OPEN;
 		} else {
-			$register_policy = Register::CLOSED;
+			$serverdata['register_policy'] = Register::CLOSED;
+		}
+
+		if (!empty($serverdata['network']) && in_array($serverdata['detection-method'],
+			[self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+			$serverdata['detection-method'] = self::DETECT_CONFIG_JSON;
 		}
 
 		return $serverdata;
@@ -1127,6 +1268,11 @@ class GServer
 			$serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
 			$serverdata['version'] = trim($serverdata['version'], '"');
 			$serverdata['network'] = Protocol::OSTATUS;
+
+			if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+				$serverdata['detection-method'] = self::DETECT_GNUSOCIAL;
+			}
+	
 			return $serverdata;
 		}
 
@@ -1148,6 +1294,10 @@ class GServer
 				$serverdata['platform'] = 'statusnet';
 				$serverdata['network'] = Protocol::OSTATUS;
 			}
+
+			if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
+				$serverdata['detection-method'] = self::DETECT_STATUSNET;
+			}
 		}
 
 		return $serverdata;
@@ -1166,6 +1316,11 @@ class GServer
 		$curlResult = Network::curl($url . '/friendica/json');
 		if (!$curlResult->isSuccess()) {
 			$curlResult = Network::curl($url . '/friendika/json');
+			$friendika = true;
+			$platform = 'Friendika';
+		} else {
+			$friendika = false;
+			$platform = 'Friendica';
 		}
 
 		if (!$curlResult->isSuccess()) {
@@ -1177,6 +1332,10 @@ class GServer
 			return $serverdata;
 		}
 
+		if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {			
+			$serverdata['detection-method'] = $friendika ? self::DETECT_FRIENDIKA : self::DETECT_FRIENDICA;
+		}
+
 		$serverdata['network'] = Protocol::DFRN;
 		$serverdata['version'] = $data['version'];
 
@@ -1212,7 +1371,7 @@ class GServer
 				break;
 		}
 
-		$serverdata['platform'] = strtolower($data['platform'] ?? '');
+		$serverdata['platform'] = strtolower($data['platform'] ?? $platform);
 
 		return $serverdata;
 	}
@@ -1260,7 +1419,8 @@ class GServer
 				$serverdata['info'] = $attr['content'];
 			}
 
-			if ($attr['name'] == 'application-name') {
+			if (in_array($attr['name'], ['application-name', 'al:android:app_name', 'al:ios:app_name',
+				'twitter:app:name:googleplay', 'twitter:app:name:iphone', 'twitter:app:name:ipad'])) {
 				$serverdata['platform'] = strtolower($attr['content']);
  				if (in_array($attr['content'], ['Misskey', 'Write.as'])) {
 					$serverdata['network'] = Protocol::ACTIVITYPUB;
@@ -1281,6 +1441,10 @@ class GServer
 						} else {
 							$serverdata['network'] = Protocol::FEED;
 						}
+
+						if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
+							$serverdata['detection-method'] = self::DETECT_BODY;
+						}
 					}
 					if (in_array($version_part[0], ['Friendika', 'Friendica'])) {
 						$serverdata['platform'] = strtolower($version_part[0]);
@@ -1336,6 +1500,10 @@ class GServer
 			}
 		}
 
+		if (!empty($serverdata['network']) && ($serverdata['detection-method'] == self::DETECT_MANUAL)) {
+			$serverdata['detection-method'] = self::DETECT_BODY;
+		}
+
 		return $serverdata;
 	}
 
@@ -1351,16 +1519,23 @@ class GServer
 	{
 		if ($curlResult->getHeader('server') == 'Mastodon') {
 			$serverdata['platform'] = 'mastodon';
-			$serverdata['network'] = $network = Protocol::ACTIVITYPUB;
+			$serverdata['network'] = Protocol::ACTIVITYPUB;
 		} elseif ($curlResult->inHeader('x-diaspora-version')) {
 			$serverdata['platform'] = 'diaspora';
-			$serverdata['network'] = $network = Protocol::DIASPORA;
+			$serverdata['network'] = Protocol::DIASPORA;
 			$serverdata['version'] = $curlResult->getHeader('x-diaspora-version');
 		} elseif ($curlResult->inHeader('x-friendica-version')) {
 			$serverdata['platform'] = 'friendica';
-			$serverdata['network'] = $network = Protocol::DFRN;
+			$serverdata['network'] = Protocol::DFRN;
 			$serverdata['version'] = $curlResult->getHeader('x-friendica-version');
+		} else {
+			return $serverdata;
 		}
+
+		if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
+			$serverdata['detection-method'] = self::DETECT_HEADER;
+		}
+
 		return $serverdata;
 	}
 
@@ -1472,7 +1647,6 @@ class GServer
 			$api = 'https://instances.social/api/1.0/instances/list?count=0';
 			$header = ['Authorization: Bearer '.$accesstoken];
 			$curlResult = Network::curl($api, false, ['headers' => $header]);
-
 			if ($curlResult->isSuccess()) {
 				$servers = json_decode($curlResult->getBody(), true);
 
diff --git a/src/Network/Probe.php b/src/Network/Probe.php
index d5b3e0be8..433319654 100644
--- a/src/Network/Probe.php
+++ b/src/Network/Probe.php
@@ -30,6 +30,7 @@ use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Model\Contact;
+use Friendica\Model\GServer;
 use Friendica\Model\Profile;
 use Friendica\Protocol\ActivityNamespace;
 use Friendica\Protocol\ActivityPub;
@@ -86,14 +87,16 @@ class Probe
 				"community", "keywords", "location", "about", "hide",
 				"batch", "notify", "poll", "request", "confirm", "poco",
 				"following", "followers", "inbox", "outbox", "sharedinbox",
-				"priority", "network", "pubkey", "baseurl"];
+				"priority", "network", "pubkey", "baseurl", "gsid"];
 
 		$newdata = [];
 		foreach ($fields as $field) {
 			if (isset($data[$field])) {
 				$newdata[$field] = $data[$field];
-			} else {
+			} elseif ($field != "gsid") {
 				$newdata[$field] = "";
+			} else {
+				$newdata[$field] = null;
 			}
 		}
 
@@ -461,6 +464,10 @@ class Probe
 			$data['baseurl'] = self::$baseurl;
 		}
 
+		if (!empty($data['baseurl']) && empty($data['gsid'])) {
+			$data['gsid'] = GServer::getID($data['baseurl']);
+		}
+
 		if (empty($data['network'])) {
 			$data['network'] = Protocol::PHANTOM;
 		}
diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index c3168f550..9d6223a74 100644
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -171,6 +171,7 @@ class ActivityPub
 		$profile['poll'] = $apcontact['outbox'];
 		$profile['pubkey'] = $apcontact['pubkey'];
 		$profile['baseurl'] = $apcontact['baseurl'];
+		$profile['gsid'] = $apcontact['gsid'];
 
 		// Remove all "null" fields
 		foreach ($profile as $field => $content) {
diff --git a/static/dbstructure.config.php b/static/dbstructure.config.php
index 512002f25..fc7abded5 100755
--- a/static/dbstructure.config.php
+++ b/static/dbstructure.config.php
@@ -54,11 +54,40 @@
 use Friendica\Database\DBA;
 
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1349);
+	define('DB_UPDATE_VERSION', 1350);
 }
 
 return [
 	// Side tables
+	"gserver" => [
+		"comment" => "Global servers",
+		"fields" => [
+			"id" => ["type" => "int unsigned", "not null" => "1", "extra" => "auto_increment", "primary" => "1", "comment" => "sequential ID"],
+			"url" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"nurl" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"version" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"site_name" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"info" => ["type" => "text", "comment" => ""],
+			"register_policy" => ["type" => "tinyint", "not null" => "1", "default" => "0", "comment" => ""],
+			"registered-users" => ["type" => "int unsigned", "not null" => "1", "default" => "0", "comment" => "Number of registered users"],
+			"directory-type" => ["type" => "tinyint", "default" => "0", "comment" => "Type of directory service (Poco, Mastodon)"],
+			"poco" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"noscrape" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"network" => ["type" => "char(4)", "not null" => "1", "default" => "", "comment" => ""],
+			"platform" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
+			"relay-subscribe" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Has the server subscribed to the relay system"],
+			"relay-scope" => ["type" => "varchar(10)", "not null" => "1", "default" => "", "comment" => "The scope of messages that the server wants to get"],
+			"detection-method" => ["type" => "tinyint unsigned", "comment" => "Method that had been used to detect that server"],
+			"created" => ["type" => "datetime", "not null" => "1", "default" => DBA::NULL_DATETIME, "comment" => ""],
+			"last_poco_query" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
+			"last_contact" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
+			"last_failure" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
+		],
+		"indexes" => [
+			"PRIMARY" => ["id"],
+			"nurl" => ["UNIQUE", "nurl(190)"],
+		]
+	],
 	"clients" => [
 		"comment" => "OAuth usage",
 		"fields" => [
@@ -142,6 +171,7 @@ return [
 			"unsearchable" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Contact prefers to not be searchable"],
 			"sensitive" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Contact posts sensitive content"],
 			"baseurl" => ["type" => "varchar(255)", "default" => "", "comment" => "baseurl of the contact"],
+			"gsid" => ["type" => "int unsigned", "foreign" => ["gserver" => "id", "on delete" => "restrict"], "comment" => "Global Server ID"],
 			"reason" => ["type" => "text", "comment" => ""],
 			"closeness" => ["type" => "tinyint unsigned", "not null" => "1", "default" => "99", "comment" => ""],
 			"info" => ["type" => "mediumtext", "comment" => ""],
@@ -166,6 +196,7 @@ return [
 			"nick_uid" => ["nick(32)", "uid"],
 			"dfrn-id" => ["dfrn-id(64)"],
 			"issued-id" => ["issued-id(64)"],
+			"gsid" => ["gsid"]
 		]
 	],
 	"item-uri" => [
@@ -273,6 +304,7 @@ return [
 			"alias" => ["type" => "varchar(255)", "comment" => ""],
 			"pubkey" => ["type" => "text", "comment" => ""],
 			"baseurl" => ["type" => "varchar(255)", "comment" => "baseurl of the ap contact"],
+			"gsid" => ["type" => "int unsigned", "foreign" => ["gserver" => "id", "on delete" => "restrict"], "comment" => "Global Server ID"],
 			"generator" => ["type" => "varchar(255)", "comment" => "Name of the contact's system"],
 			"following_count" => ["type" => "int unsigned", "default" => 0, "comment" => "Number of following contacts"],
 			"followers_count" => ["type" => "int unsigned", "default" => 0, "comment" => "Number of followers"],
@@ -283,7 +315,8 @@ return [
 			"PRIMARY" => ["url"],
 			"addr" => ["addr(32)"],
 			"alias" => ["alias(190)"],
-			"url" => ["followers(190)"]
+			"followers" => ["followers(190)"],
+			"gsid" => ["gsid"]
 		]
 	],
 	"attach" => [
@@ -539,6 +572,7 @@ return [
 			"alias" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
 			"generation" => ["type" => "tinyint unsigned", "not null" => "1", "default" => "0", "comment" => ""],
 			"server_url" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => "baseurl of the contacts server"],
+			"gsid" => ["type" => "int unsigned", "foreign" => ["gserver" => "id", "on delete" => "restrict"], "comment" => "Global Server ID"],
 		],
 		"indexes" => [
 			"PRIMARY" => ["id"],
@@ -548,6 +582,7 @@ return [
 			"addr" => ["addr(64)"],
 			"hide_network_updated" => ["hide", "network", "updated"],
 			"updated" => ["updated"],
+			"gsid" => ["gsid"]
 		]
 	],
 	"gfollower" => [
@@ -605,34 +640,6 @@ return [
 			"gid_contactid" => ["UNIQUE", "gid", "contact-id"],
 		]
 	],
-	"gserver" => [
-		"comment" => "Global servers",
-		"fields" => [
-			"id" => ["type" => "int unsigned", "not null" => "1", "extra" => "auto_increment", "primary" => "1", "comment" => "sequential ID"],
-			"url" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"nurl" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"version" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"site_name" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"info" => ["type" => "text", "comment" => ""],
-			"register_policy" => ["type" => "tinyint", "not null" => "1", "default" => "0", "comment" => ""],
-			"registered-users" => ["type" => "int unsigned", "not null" => "1", "default" => "0", "comment" => "Number of registered users"],
-			"directory-type" => ["type" => "tinyint", "default" => "0", "comment" => "Type of directory service (Poco, Mastodon)"],
-			"poco" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"noscrape" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"network" => ["type" => "char(4)", "not null" => "1", "default" => "", "comment" => ""],
-			"platform" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
-			"relay-subscribe" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Has the server subscribed to the relay system"],
-			"relay-scope" => ["type" => "varchar(10)", "not null" => "1", "default" => "", "comment" => "The scope of messages that the server wants to get"],
-			"created" => ["type" => "datetime", "not null" => "1", "default" => DBA::NULL_DATETIME, "comment" => ""],
-			"last_poco_query" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
-			"last_contact" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
-			"last_failure" => ["type" => "datetime", "default" => DBA::NULL_DATETIME, "comment" => ""],
-		],
-		"indexes" => [
-			"PRIMARY" => ["id"],
-			"nurl" => ["UNIQUE", "nurl(190)"],
-		]
-	],
 	"gserver-tag" => [
 		"comment" => "Tags that the server has subscribed",
 		"fields" => [