CONTINUOUS INTERNET TELEMETRY24H DRIFT39,267 material changesacross 37,658 domains · 24h to ~45m ago · -1,593 vs yesterdayNOW555 curated domains not reachablelast probe, steadySITE ERRORS34,567 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,805 sites429 rate-limit / 403 bot-block, a posture signal

viessmann.cz

Observed Jul 26, 2026, 09:05 UTC (7d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

Up right now
Email byProofpoint
Secured byLet's Encrypt
Also usesFacebook/MetaGoogle Search Console
majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat viessmann.cz actually stands on - every host below is a signed observation
viessmann.cz
A / AAAA
93.122.86.52
unattributedserves the site
NS
b.ns14.netc.ns14.netd.ns14.neta.ns14.net
ns14.netanswers its DNS
MX
mxa-0065c301.gslb.pphosted.commxb-0065c301.gslb.pphosted.com
Proofpointreceives its email
TLS
viessmann.cz
Let's Encryptissued its certificate

DNS Records

A 1

  • 93.122.86.52

MX 2

  • 10mxa-0065c301.gslb.pphosted.com
  • 10mxb-0065c301.gslb.pphosted.com

TXT 8

  • MS=ms45847443
  • 00D58000000HYrR=1TBSd00000002xy
  • google-site-verification=d8XY_XriNalElYYIMWFlDCXnjpCWLwcKYI3k8daBLHQ
  • v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.mailjet.com -all
  • google-site-verification=Xbbg5OsGKODa8-QPhRleSzI4E6TCvWRVAwZYqYN-EuY
  • google-site-verification=25Puz7GliZbuRk746OpBqsiKEpFIF0T3awxIRYeWq6k
  • facebook-domain-verification=c8zpcmjvxc0gg26gdpecqnoib3oryz
  • v=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;

NS 4

  • b.ns14.net
  • c.ns14.net
  • d.ns14.net
  • a.ns14.net

SOA 1

  • a.ns14.net do-not-reply.viessmann.cz

TLS Certificates (3)

Common NameIssuerExpires
viessmann.cz C=US, O=Let's Encrypt, CN=YR1 Mon, 21 Sep 2026 20:57:49 +0000
YR1 C=US, O=ISRG, CN=Root YR Sat, 02 Sep 2028 23:59:59 +0000
Root YR 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.

Verify this receipt

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

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

Ed25519 Receipt

Receipt ID
rcpt_46a90f7659058e8e
Output Hash
815dbda9a8009d2751f3afc66dade12ad9b0be8f2dd50321a05325eca244ed8f
Signature
ed25519:59b05099f5087248a279c35e514a7ce1a6b10d5cfdd8ea8e4a3a3a85af8c2e85ddbe7243efdb057428fa3b5612f63ac16210d90c1620d0b0169fe01db3da7805
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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