CONTINUOUS INTERNET TELEMETRY24H DRIFT2,170 material changesacross 1,968 domains · -381 vs yesterdayDNS DRIFT11 domains changed DNS providertop destination afternic.com · -5 vs yesterdayEMAIL DRIFT6 domains switched email providertop destination google.com · +1 vs yesterdayCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,405 curated domains not answeringlast probe, steadyERRORS10,894 responded with an errorlast probe · 5xx / 404 / 429 / 40324H DRIFT2,170 material changesacross 1,968 domains · -381 vs yesterdayDNS DRIFT11 domains changed DNS providertop destination afternic.com · -5 vs yesterdayEMAIL DRIFT6 domains switched email providertop destination google.com · +1 vs yesterdayCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,405 curated domains not answeringlast probe, steadyERRORS10,894 responded with an errorlast probe · 5xx / 404 / 429 / 403

classcentral.com

Observed 2026-07-13T09:00:39.338Z (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Email byGoogle Workspace
Also usesGoogle Search Console
IPv6 · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat classcentral.com actually stands on - every host below is a signed observation
classcentral.com
A / AAAA
104.20.31.233172.66.155.952606:4700:10::ac42:9b5f2606:4700:10::6814:1fe9
Cloudflareserves the site
NS
arely.ns.cloudflare.comcash.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
alt3.aspmx.l.google.comaspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.com+1 more
Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.classcentral.com/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time52 ms
DNS resolutionNOERROR
Redirect chain
https://www.classcentral.com/

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

DNS Records

A 2

  • 104.20.31.233
  • 172.66.155.95

AAAA 2

  • 2606:4700:10::ac42:9b5f
  • 2606:4700:10::6814:1fe9

MX 5

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

TXT 8

  • google-site-verification=B5tS98xLS8LWKgF0jvgFT1ZMVFKHu2x2Bm1dDUkfZok
  • google-site-verification=MVj1x00m2Sfy8hd2NKzae4A9vNUeb56LeY8lbrCFFMw
  • prowly-verification=b4b5eac2db73d1bf8336e0c31c0ad569d48bca13aa333785f3fc205c9217e6cb
  • ahrefs-site-verification_66d70d81cc769a17be729ca86b4b78a154ce5bdf05a959a3e24fef31f96042e5
  • google-site-verification=nti5KS3pWsqPVSly62k9EXN_K_20_cnQL9dJ0l7HAh0
  • v=spf1 include:_spf.google.com ~all
  • v=DMARC1; p=none; rua=mailto:dmarc@classcentral.com; ruf=mailto:dmarc@classcentral.com; fo=1; pct=100
  • v=DKIM1; (detected)

NS 2

  • arely.ns.cloudflare.com
  • cash.ns.cloudflare.com

SOA 1

  • arely.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (0)

None.

Subdomains (3)

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 classcentral.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
75bfdf91-44d9-4bcd-8734-d74b792c1e63
Output Hash
226c93e9307f36f2a63225cf9fc4eef7a6496601a676521d248953087f75eab3
Signature
ed25519:fa99625a48c8a76b0a3ecab1e44befc710599297d36c59ad0d4cc4413956975d1f3df7f0856838b6902e13d3302c2f3ce64b5bb75f03ab8ac2fef347be121f00
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser