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 Encrypt145,223 domains
GlobalSign108,528 domains
Google Trust Services104,376 domains
Showing 3 of 158 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.
155 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
Sign in What it's for

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 DRIFT4,467 material changesacross 513 domains · 24h to ~3h ago · -53 vs yesterdayROTATION57 domains moved DNS from koaladns.com to magpiedns.com, 52 moved backa rotation loop, not a migration · 24hNOW947 curated domains not reachablelast probe, steadySITE ERRORS19,687 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 87,106 sites429 rate-limit / 403 bot-block, a posture signal