diff --git a/functions.php b/functions.php
index daeceb6..9f52a50 100644
--- a/functions.php
+++ b/functions.php
@@ -212,11 +212,11 @@ function load_mastodon_js(){
   global $helpers;
 
   $bot_tweets_html = get_post_meta( $post->ID, 'bot_tweets_html', true );
-  $known_mastodon_instances = $helpers->get_known_mastodon_instances();
+  $urls = wp_extract_urls($bot_tweets_html);
 
-  foreach ( $known_mastodon_instances as $instance ){
-    if ( strpos( $bot_tweets_html, $instance ) !== false ){
-      echo $helpers->get_mastodon_embed_script_tag($instance);
+  foreach ( $urls as $url ){
+    if ( $helpers->is_mastodon_instance($url) ){
+      echo $helpers->get_mastodon_embed_script_tag($helpers->get_domain_from_url($url));
       break;  
     }
   }
diff --git a/includes/helpers.php b/includes/helpers.php
index 2a87cce..698414c 100644
--- a/includes/helpers.php
+++ b/includes/helpers.php
@@ -336,6 +336,22 @@ function get_fediverse_url( $handle ){
     return $fediverse_url;
   }
 
+  function is_mastodon_instance($url){
+    $domain = $this->get_domain_from_url( $url );
+    if (in_array($domain, $this->get_known_mastodon_instances()) ){
+      return true;
+    }
+
+    $response = wp_remote_get( "https://$domain/api/v2/instance" );
+    $response_code = wp_remote_retrieve_response_code( $response );
+
+    if ($response_code === 200){
+      return true;
+    }
+
+    return false;
+  }
+
   function get_known_mastodon_instances(){
     // TODO: Move these to a settings page for easier maintanance.
 
diff --git a/includes/post-types/bots.php b/includes/post-types/bots.php
index e2dafba..710dc92 100644
--- a/includes/post-types/bots.php
+++ b/includes/post-types/bots.php
@@ -699,17 +699,11 @@ function save_meta( $post_id ) {
               // $bot_tweets_html .= $data->html;
             }
             else {
-              
-                global $helpers;
-                $known_mastodon_instances = $helpers->get_known_mastodon_instances();
-
-                foreach ( $known_mastodon_instances as $instance ){
-                  if ( strpos( $tweet_url, $instance ) !== false ){
-                    $bot_tweets_html .= '<blockquote><iframe src="' . $tweet_url . '/embed" class="mastodon-embed" style="max-width: 100%; border: 0" width="400"></iframe></blockquote>';
-                    break;  
-                  }
-                }
-
+              global $helpers;
+              if ( $helpers->is_mastodon_instance($tweet_url) ){
+                $bot_tweets_html .= '<blockquote><iframe src="' . $tweet_url . '/embed" class="mastodon-embed" style="max-width: 100%; border: 0" width="400"></iframe></blockquote>';
+                break;  
+              }
             }
           }