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zbmath.org

Observed Aug 2, 2026, 11:31 UTC (12h 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.

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Guarded by a firewall
Runs onCloudflare
Secured byGoogle Trust Services
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zbmath.org actually stands on - every host below is a signed observation
zbmath.org
A / AAAA
172.66.161.226104.20.42.1942606:4700:10::6814:2ac22606:4700:10::ac42:a1e2
Cloudflareserves the site
NS
romina.ns.cloudflare.comskip.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
smtp.fiz-karlsruhe.de
fiz-karlsruhe.dereceives its email
TLS
zbmath.org
Google Trust Servicesissued its certificate

DNS Records

A 2

  • 172.66.161.226
  • 104.20.42.194

AAAA 2

  • 2606:4700:10::6814:2ac2
  • 2606:4700:10::ac42:a1e2

MX 1

  • 10smtp.fiz-karlsruhe.de

TXT 2

  • HARICA-FbmTfK0cbgYSBuawUa9
  • v=spf1 ip4:141.66.0.0/16 ~all

NS 2

  • romina.ns.cloudflare.com
  • skip.ns.cloudflare.com

SOA 1

  • romina.ns.cloudflare.com dns.cloudflare.com

DMARC_RECORDS 1

  • v=DMARC1; p=none; rua=mailto:dmarc-reports@fiz-karlsruhe.de,mailto:postmaster@zbmath.org

TLS Certificates (3)

Common NameIssuerExpires
zbmath.org C=US, O=Google Trust Services, CN=WE1 Fri, 23 Oct 2026 21:34:46 +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; nothing leaves your machine.

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Ed25519 Receipt

Receipt ID
rcpt_250779e721e06346
Output Hash
bae162e10807fece4e25e6329a03095ebf1bba80eb3c4e7841426318a809768f
Signature
ed25519:53cccf4c1086e81f332734e9ebe4b8c8e8b501e32026fd625b386868dce7bcdcf5ea414bacb759e5c4a8d38ffef12eaa60806c43884b81a356909e5d15da330f
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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