CONTINUOUS INTERNET TELEMETRY24H DRIFT2,052 material changesacross 1,861 domains · +93 vs yesterdayDNS DRIFT24 domains changed DNS providertop destination cloudflare.com · +5 vs yesterdayEMAIL DRIFT8 domains switched email providertop destination google.com · +5 vs yesterdayCERT DRIFT1 domains switched issuing CA24h · -1 vs yesterdayNOW3,479 curated domains not answeringlast probe, steadyERRORS8,524 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED2,337 throttled or blocked our scanner429 rate-limit / 403 bot-block24H DRIFT2,052 material changesacross 1,861 domains · +93 vs yesterdayDNS DRIFT24 domains changed DNS providertop destination cloudflare.com · +5 vs yesterdayEMAIL DRIFT8 domains switched email providertop destination google.com · +5 vs yesterdayCERT DRIFT1 domains switched issuing CA24h · -1 vs yesterdayNOW3,479 curated domains not answeringlast probe, steadyERRORS8,524 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED2,337 throttled or blocked our scanner429 rate-limit / 403 bot-block

mathoverflow.net

Observed 2026-07-14T22:16:15.559Z (18h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Email byGoogle Workspace
Registered withGoDaddy.com, LLC
Also usesGoogle Search Console
2 subdomains · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat mathoverflow.net actually stands on - every host below is a signed observation
mathoverflow.net
A / AAAA
198.252.206.1
Cloudflareserves the site
NS
damian.ns.cloudflare.comsureena.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
alt4.aspmx.l.google.comalt3.aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.com+1 more
Google Workspacereceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK
HTTP status200
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time129 ms
DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

  • 198.252.206.1

MX 5

  • 10alt4.aspmx.l.google.com
  • 10alt3.aspmx.l.google.com
  • 5alt1.aspmx.l.google.com
  • 5alt2.aspmx.l.google.com
  • 1aspmx.l.google.com

TXT 2

  • v=spf1 include:_spf.google.com -all
  • google-site-verification=Oor77iaEIbiS-miSy9oXc8kM4J9IXwfgDpF7YPkEy5U

NS 2

  • damian.ns.cloudflare.com
  • sureena.ns.cloudflare.com

SOA 1

  • damian.ns.cloudflare.com dns.cloudflare.com

CAA 13

  • issuewild sectigo.com
  • issuewild comodoca.com
  • issue pki.goog; cansignhttpexchanges=yes
  • iodef mailto:sysadmin-team@stackoverflow.com
  • issue digicert.com; cansignhttpexchanges=yes
  • issuewild ssl.com
  • issue sectigo.com
  • issue comodoca.com
  • issuewild letsencrypt.org
  • issue ssl.com

TLS Certificates (0)

None.

Subdomains (2)

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.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for mathoverflow.net. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for mathoverflow.net <a href="https://domaindrift.io/t/mathoverflow.net"> <img src="https://domaindrift.io/badge/mathoverflow.net.svg" width="300" height="64" alt="DomainDrift signed observations for mathoverflow.net"> </a>

Ed25519 Receipt

Receipt ID
f8583991-5951-4325-957d-81d839880226
Output Hash
c4902a86a51693cdcde79f06236c9f66918916e12e69308dfa87173a3b49066c
Signature
ed25519:71f271904e354d42eee7581ba56a304fa8063489d418ff67191fdf429f8655ca9803a3b722bbff46f7508e66fcc32721acb2a013caa4a06177a8dcb83ce56302
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser