Certificate issuers

The certificate authorities DomainDrift observes across at least 300,000 domains, from CT logs. Signed-out visitors see the three largest.

Let's Encrypt141,649 domains
GlobalSign111,223 domains
Google Trust Services106,795 domains
Showing 3 of 153 certificate issuers - sign in to see all The total is live: rows and count come from the same query the full page runs, never a typed number.
150 more certificate issuers open with an account.
  • Every issuer, ranked, with the domains behind each one
  • Certificate expiry tracking and alerts before a cert breaks
  • The signed evidence bundle for any domain, verifiable offline
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Public, right now: today's change feed, a signed snapshot of any domain, the API docs, and one keyless API call every 15 seconds.

CONTINUOUS INTERNET TELEMETRY24H DRIFT41,982 material changesacross 40,107 domains · 24h to ~2h ago · +2,742 vs yesterdayROTATION65 domains moved DNS from kirklanddc.com to magpiedns.com, 61 moved backa rotation loop, not a migration · 24hEMAIL DRIFT7 domains switched email provider24hNOW503 curated domains not reachable-88 vs yesterdaySITE ERRORS33,734 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 116,827 sites429 rate-limit / 403 bot-block, a posture signal