What changed on the internet 2026-09-19

2026-09-19 · top 20 of at least 32 by significance · 809,754 tracked domains

Reachability changes

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

Full report

Email authentication changes

SPF, DKIM, and DMARC posture moves.

steelers.com SPF strengthened: SPF without -all → SPF with -all (hard fail)
20:08 UTC · verify

DNS record changes

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

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rdp.ru Mail route added: rdp.ru (alongside rdp.ru)
20:24 UTC · verify

Email provider changes

The mail now routes through 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)
15:47 UTC · verify
CONTINUOUS INTERNET TELEMETRY24H DRIFT7,180 material changesacross 4,025 domains · 24h to ~40m ago · +2,170 vs yesterdayROTATION74 domains moved DNS from koaladns.com to magpiedns.com, 72 moved backa rotation loop, not a migration · 24hNOW965 curated domains not reachable-42 vs yesterdaySITE ERRORS17,871 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 91,107 sites429 rate-limit / 403 bot-block, a posture signal