What changed on the internet 2026-10-21

2026-10-21 · top 20 of at least 38 by significance · 809,784 tracked domains

DNS provider changes

Resolution moved to a different operator.

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fsw.edu fsw.edu + myflorida.comcloudflare.com
23:57 UTC · verify

Reachability changes

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

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DNS record changes

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

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Certificate and TLS changes

Issuer switches, rotations, and expiries.

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CONTINUOUS INTERNET TELEMETRY24H DRIFT8,677 material changesacross 375 domains · 24h to ~60m ago · +492 vs yesterdayROTATION54 domains moved DNS from magpiedns.com to koaladns.com, 51 moved backa rotation loop, not a migration · 24hREGISTRAR DRIFT2 changed registrar24hNOW1,219 curated domains not reachablelast probe, steadySITE ERRORS20,024 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 87,523 sites429 rate-limit / 403 bot-block, a posture signal