What changed on the internet 2026-09-21

2026-09-21 · top 20 of at least 46 by significance · 809,754 tracked domains

Reachability changes

Up, down, and blocked edges, re-probed before we claim them.

Full report

DNS provider changes

Resolution moved to a different operator.

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Certificate and TLS changes

Issuer switches, rotations, and expiries.

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facebook.com Certificate EXPIRED with no renewal (was valid until 2021-07-31T12:00:00.000Z)
14:23 UTC · verify

DNS record changes

Record-level moves: nameservers, mail routes, targets.

Full report

Email authentication changes

SPF, DKIM, and DMARC posture moves.

CONTINUOUS INTERNET TELEMETRY24H DRIFT5,346 material changesacross 2,463 domains · 24h to ~2h ago · +336 vs yesterdayROTATION75 domains moved DNS from magpiedns.com to koaladns.com, 74 moved backa rotation loop, not a migration · 24hNOW977 curated domains not reachablelast probe, steadySITE ERRORS17,864 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 91,532 sites429 rate-limit / 403 bot-block, a posture signal