diff --git a/mod/admin.php b/mod/admin.php
index 83ef15f4a..1bcbb45e7 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -381,17 +381,12 @@ function admin_page_contactblock_post(App $a)
 	check_form_security_token_redirectOnErr('/admin/contactblock', 'admin_contactblock');
 
 	if (x($_POST, 'page_contactblock_block')) {
-		$net = Probe::uri($contact_url);
-		if (in_array($net['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
-			notice(t('This contact doesn\'t seem to exist.'));
-		}
-		$nurl = normalise_link($net['url']);
-		$r = dba::select('contact', ['id'], ['nurl' => $nurl, 'uid' => 0], ['limit' => 1]);
-		if (DBM::is_result($r)) {
-			Contact::block($r['id']);
+		$contact_id = Contact::getIdForURL($contact_url, 0);
+		if ($contact_id) {
+			Contact::block($contact_id);
 			notice(t('The contact has been blocked from the node'));
 		} else {
-			notice(t('Could not find any contact entry for this URL (%s)', $nurl));
+			notice(t('Could not find any contact entry for this URL (%s)', $contact_url));
 		}
 	}
 	if (x($_POST, 'page_contactblock_unblock')) {
@@ -428,7 +423,7 @@ function admin_page_contactblock(App $a)
 		// strings //
 		'$title'       => t('Administration'),
 		'$page'        => t('Remote Contact Blocklist'),
-		'$description' => t('This page allows you to prevent any message from a remote contact to reach your node. However, your node must have knowledge of the contact before you can block it.'),
+		'$description' => t('This page allows you to prevent any message from a remote contact to reach your node.'),
 		'$submit'      => t('Block Remote Contact'),
 		'$select_all'  => t('select all'),
 		'$select_none' => t('select none'),
diff --git a/util/global_community_block.php b/util/global_community_block.php
index cb6789e45..db68fdb4b 100755
--- a/util/global_community_block.php
+++ b/util/global_community_block.php
@@ -1,6 +1,5 @@
 #!/usr/bin/env php
 <?php
-
 /**
  * @brief tool to block an account from the node
  *
@@ -17,49 +16,40 @@
  * Author: Tobias Diekershoff
  *
  * License: AGPLv3 or later, same as Friendica
- **/
-
+ */
 if ($argc != 2 || $argv[1] == "-h" || $argv[1] == "--help" || $argv[1] == "-?") {
-	echo "Usage: ".$argv[0]." [-h|profile_url]\r\n";
+	echo "Usage: " . $argv[0] . " [-h|profile_url]\r\n";
 	echo "    -h, -?, --help ... show this help\r\n";
 	echo "    profile_url ...... The URL of the profile you want to silence\r\n";
 	echo "\r\n";
 	echo "Example: block bob@example.com\r\n";
-	echo "$> ".$argv[0]." https://example.com/profiles/bob\r\n";
+	echo "$> " . $argv[0] . " https://example.com/profiles/bob\r\n";
 	echo "\r\n";
 	exit(0);
 }
 
-use Friendica\Database\DBM;
-use Friendica\Network\Probe;
+use Friendica\BaseObject;
+use Friendica\Object\Contact;
 
 require_once 'boot.php';
+
+$a = get_app();;
+BaseObject::setApp($a);
+
+require_once '.htconfig.php';
 require_once 'include/dba.php';
 require_once 'include/text.php';
-$a = get_app();
-require_once '.htconfig.php';
 
 dba::connect($db_host, $db_user, $db_pass, $db_data);
 unset($db_host, $db_user, $db_pass, $db_data);
 
-/**
- * 1. make nurl from last parameter
- * 2. check DB (contact) if there is a contact with uid=0 and that nurl, get the ID
- * 3. set the flag hidden=1 for the contact entry with the found ID
- **/
-$net = Probe::uri($argv[1]);
-if (in_array($net['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
-	echo 'This account seems not to exist.';
+$contact_id = Contact::getIdForURL($argv[1], 0);
+if (!$contact_id) {
+	echo t('Could not find any contact entry for this URL (%s)', $nurl);
 	echo "\r\n";
 	exit(1);
 }
-$nurl = normalise_link($net['url']);
-$r = dba::select('contact', array('id'), array('nurl' => $nurl, 'uid' => 0), array('limit' => 1));
-if (DBM::is_result($r)) {
-	dba::update('contact', array('blocked' => true), array('id' => $r['id']));
-	echo "NOTICE: The account should be blocked from the node now\r\n";
-} else {
-	echo "NOTICE: Could not find any entry for this URL (".$nurl.")\r\n";
-}
-
-?>
+Contact::block($contact_id);
+echo t('The contact has been blocked from the node');
+echo "\r\n";
+exit(0);