ctan.org

Observed Jul 24, 2026, 03:13 UTC (27m 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.

Verify this receipt yourself + Watch this domain

Up right now

Runs onnetcup

Secured byLet's Encrypt

Registered withDNC Holdings, Inc.

Also usesGoogle Search Console

IPv6 · tranco_20k

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

INFRASTRUCTURE MAPwhat ctan.org actually stands on - every host below is a signed observation

ctan.org

A / AAAA

202.61.224.1322a03:4000:56:120::1

netcupserves the site

tragedy.dante.dens2.tug.orgns1.tug.org

dante.de + tug.organswers its DNS

irony.dante.de

dante.dereceives its email

TLS

ctan.org

Let's Encryptissued its certificate

DNS Records

A 1

202.61.224.132

AAAA 1

2a03:4000:56:120::1

MX 1

10irony.dante.de

TXT 3

v=spf1 mx ~all
google-site-verification=9S_RyjfPcn9W3kYwDDrU7BswRhDytfyD4R_736raDso
v=DMARC1; p=none

NS 3

tragedy.dante.de
ns2.tug.org
ns1.tug.org

SOA 1

tragedy.dante.de root.tug.org

TLS Certificates (4)

Common Name	Issuer	Expires
`ctan.org`	C=US, O=Let's Encrypt, CN=YE2	Mon, 28 Sep 2026 11:12:36 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	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 ctan.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_9713728b5c1fa73f
Output Hash: b4fffa7ac2d8a3cf8ae890fbc3518143dbb1cdb6fcdd3ddcc670b9a026ed694c
Signature: ed25519:6e851bc83e6a59f7362baee04d2d23afd5f6ce025c39e3f19ba836e7fb41b0a09708fd93b2227ee1cc082173ef5af3e919f5e7289fb051772de4d2f9ee38ae0c
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/ctan.org