jrc.cz

Observed Aug 11, 2026, 06:09 UTC (5d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of jrc.cz was taken 5d ago

jrc.cz is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting jrc.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 jrc.cz Watching a domain needs a DRM3 account. The reading above stays free and public either way.

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Guarded by a firewall

Runs onCloudflare

Email byMicrosoft 365

Secured byGoogle Trust Services

Also usesFacebook/MetaGoogle Search Console

IPv6 · tranco

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat jrc.cz actually stands on - every host below is a signed observation

jrc.cz

A / AAAA

172.66.158.127104.20.28.1202606:4700:10::ac42:9e7f2606:4700:10::6814:1c78

Cloudflareserves the site

andronicus.ns.cloudflare.comconnie.ns.cloudflare.com

cloudflare.comanswers its DNS

jrc-cz.mail.protection.outlook.com

Microsoft 365receives its email

TLS

jrc.cz

Google Trust Servicesissued its certificate

DNS Records

A 2

172.66.158.127
104.20.28.120

AAAA 2

2606:4700:10::ac42:9e7f
2606:4700:10::6814:1c78

MX 1

0jrc-cz.mail.protection.outlook.com

TXT 6

MS=ms11717419
facebook-domain-verification=31al1r390o6qih04opuu4zvoxhwhvj
google-site-verification=MJigA2lt10TUhQ2CODPaPuLfmghZoRlZZeC3jptsRkE
google-site-verification=tRDE0MQU5fVaGXqD_uHRAe4onOilnnGwHr8a40pbcE0
v=DMARC1; p= none; sp=none; aspf=s; adkim=r; fo=0:s:d; rua=mailto:dmarc@targito.com;
v=spf1 mx a:mail.kiboon.cz a:7538.mail.zonercloud.net include:spf.protection.outlook.com include:spfe.targito.com ip4:81.0.236.96/27 ip4:217.16.180.21/28 ip4:208.73.7.117 -all

NS 2

andronicus.ns.cloudflare.com
connie.ns.cloudflare.com

SOA 1

andronicus.ns.cloudflare.com dns.cloudflare.com

SRV 3

icewarp.jrc.cz:5060 p1
icewarp.jrc.cz:5222 p1
icewarp.jrc.cz:5222 p1

DMARC_RECORDS 1

v=DMARC1; p=quarantine; rua=mailto:dmarc@targito.com

TLS Certificates (3)

Common Name	Issuer	Expires
`jrc.cz`	C=US, O=Google Trust Services, CN=WE1	Sun, 25 Oct 2026 13:16:34 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	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 (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; the only network request the check makes is for the published public keys.

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Ed25519 Receipt

Receipt ID: rcpt_150132e6779f53b6
Output Hash: a4dcd3eebbc54be928c3f5b549d1648d79094a4f2b4750c0a8c90009527f35ab
Signature: ed25519:b0de4d16d5345f21558aff62834152fce0c0d6617982cfbce03ce6ea3770e00ddc8dec1aa56602718753eca9f7bd3535dffa415125c3a4b362bfdd821df02406
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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