What is AS15169 (Google LLC)?
AS15169 is the Autonomous System operated by Google LLC, covering Google Cloud Platform, Google's public DNS resolvers (8.8.8.8 and 8.8.4.4), Search, Gmail, YouTube, and other Google services globally.
Privacy note
AS15169 appearing in a DNS leak test typically means you are using Google's 8.8.8.8 or 8.8.4.4 public DNS resolvers, either directly or because your router or ISP forwards DNS to Google. It can also appear when traffic routes through Google Cloud.