CONTINUOUS INTERNET TELEMETRY24H DRIFT38,088 material changesacross 34,280 domains · last 24hDNS DRIFT54 domains changed DNS providertop destination koaladns.com · +32 vs yesterdayNOW543 curated domains not reachablelast probe, steadySITE ERRORS33,703 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 157,225 sites429 rate-limit / 403 bot-block, a posture signal

rerf.us

Observed Jul 26, 2026, 06:14 UTC (10d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of rerf.us was taken 10d ago

rerf.us is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting rerf.us under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch rerf.us Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Verify this receipt yourself + Watch this domain
Up right now
Runs onCloudflare
Secured byLet's Encrypt
IPv6 · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat rerf.us actually stands on - every host below is a signed observation
rerf.us
A / AAAA
172.67.223.233104.21.38.1492606:4700:3032::ac43:dfe92606:4700:3034::6815:2695
Cloudflareserves the site
NS
christian.ns.cloudflare.comstella.ns.cloudflare.com
cloudflare.comanswers its DNS
TLS
rerf.us
Let's Encryptissued its certificate

DNS Records

A 2

  • 172.67.223.233
  • 104.21.38.149

AAAA 2

  • 2606:4700:3032::ac43:dfe9
  • 2606:4700:3034::6815:2695

NS 2

  • christian.ns.cloudflare.com
  • stella.ns.cloudflare.com

SOA 1

  • christian.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common NameIssuerExpires
rerf.us C=US, O=Let's Encrypt, CN=YE1 Mon, 05 Oct 2026 05:33:26 +0000
YE1 C=US, O=ISRG, CN=Root YE Sat, 02 Sep 2028 23:59:59 +0000
Root YE C=US, O=Internet Security Research Group, CN=ISRG Root X2 Thu, 02 Sep 2032 23:59:59 +0000
ISRG Root X2 C=US, O=Internet Security Research Group, CN=ISRG Root X1 Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (0)

None observed.

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

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Ed25519 Receipt

Receipt ID
rcpt_58a4c71cede02780
Output Hash
d717548303eca9e29c4154edcf2a80aea4d5487347b9866c245374efd02c071f
Signature
ed25519:c10970ce8a24b733b0ce0536947b12d7ffefd8625fc0d17c664c62b20b335f61fa0ac4f5f032a15cb29d80a50dc5ff78cef31864074b4ced32401e7f7d2afa01
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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