CONTINUOUS INTERNET TELEMETRY24H DRIFT31,235 material changesacross 30,192 domains · 24h to ~12h ago · -6,787 vs yesterdayROTATION59 domains moved DNS from kirklanddc.com to koaladns.com, 57 moved backa rotation loop, not a migration · 24hREGISTRAR DRIFT1 changed registrar24hNOW556 curated domains not reachable+25 vs yesterdaySITE ERRORS33,775 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 117,602 sites429 rate-limit / 403 bot-block, a posture signal

cra.cz

Observed Aug 2, 2026, 09:55 UTC (5d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of cra.cz was taken 5d ago

cra.cz is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting cra.cz 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 cra.cz 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 onRADIOKOMUNIKACE a.s
Email byMicrosoft 365
Secured byGoogle Trust Services
Also usesGoogle Search ConsoleAtlassian
IPv6 · 1 subdomain · tranco_10k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat cra.cz actually stands on - every host below is a signed observation
cra.cz
A / AAAA
82.99.169.742a02:a40:200:169::68
RADIOKOMUNIKACE a.sserves the site
NS
ns.bluetone.czns1.bluetone.czns2.bluetone.cz
bluetone.czanswers its DNS
MX
cra-cz.mail.protection.outlook.com
Microsoft 365receives its email
TLS
cra.cz
Google Trust Servicesissued its certificate

DNS Records

A 1

  • 82.99.169.74

AAAA 1

  • 2a02:a40:200:169::68

MX 1

  • 5cra-cz.mail.protection.outlook.com

TXT 5

  • apple-domain-verification=gAXG04Ntm7enEQDY
  • MS=C3C0D2A0EAA835A9F54083544D636256CD6A6D3D
  • v=spf1 include:el-dokument.net include:servers.mcsv.net include:spf.protection.outlook.com include:smtp.cra.cz include:spf.emailkampane.cz include:regulus.bluetone.cz include:cuda2.bluetone.cz include:_spf.eu.mailgun.org ip4:89.221.218.39 ip4:82.99.169.66 -all
  • google-site-verification=WAntfee22542ETyfcl2Qt0dkUriD48V1a9NTB-AgZl0
  • atlassian-domain-verification=KILaLHkF4XX4BASI5S2aFVwKBcXIjy/vGagbV1F591crB1Lyd8mWcW4AB0H/rQ3g

NS 3

  • ns.bluetone.cz
  • ns1.bluetone.cz
  • ns2.bluetone.cz

SOA 1

  • ns.cra.cz dmz.radiokomunikace.cz

SRV 2

  • webex.cra.cz:5060 p10
  • webex.cra.cz:5061 p10

DMARC_RECORDS 1

  • v=DMARC1; p=quarantine; rua=mailto:mailValidity@cra.cz; ruf=mailto:mailValidity@cra.cz; fo=1;

MTA_STS_RECORDS 1

  • v=STSv1; id=2023101602

TLS Certificates (3)

Common NameIssuerExpires
cra.cz C=US, O=Google Trust Services, CN=WR1 Tue, 01 Sep 2026 17:34:02 +0000
WR1 C=US, O=Google Trust Services LLC, CN=GTS Root R1 Tue, 20 Feb 2029 14:00:00 +0000
GTS Root R1 C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA Fri, 28 Jan 2028 00:00:42 +0000

Subdomains (1)

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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID
rcpt_655941c5b44dc518
Output Hash
42c4488386344033cbddbacc21388d58c00b537b87a289014f3290be7710f584
Signature
ed25519:3dfb7fb5c5770cb13f1f85b8872d4dda110ad432db293019ce07670c28f461b17da64d0b38d5074bda1a1c9bf172509cc8dd1df9f8b681021bb7f243b5e1a20b
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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