diff --git a/labelDefiner.ts b/labelDefiner.ts
index f424daa..749349e 100644
--- a/labelDefiner.ts
+++ b/labelDefiner.ts
@@ -25,7 +25,8 @@ const fallbackLabel: simplifiedLabel = {
 
 const ignoredPDSHostnamePatterns: RegExp[] = [
     /^.+\.bsky\.network$/, // These are operated by Bluesky PBC
-    /^atproto\.brid\.gy$/  // It's too slow to respond
+    /^atproto\.brid\.gy$/, // It's too slow to respond
+    /^x\.mt\.social$/      // Appears to be full of DIDs that don't actually exist
 ];
 
 const ignoredHandlePatterns: RegExp[] = [