apertus.org

Observed Jul 28, 2026, 14:15 UTC (1d 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

Secured byLet's Encrypt

1 subdomain · tranco

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

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

apertus.org

A / AAAA

136.243.167.154

unattributedserves the site

dns1.registrar-servers.comdns2.registrar-servers.com

registrar-servers.comanswers its DNS

smtp.apertus.org

apertus.orgreceives its email

TLS

apertus.org

Let's Encryptissued its certificate

DNS Records

A 1

136.243.167.154

MX 1

10smtp.apertus.org

TXT 2

v=spf1 mx ~all
libera-8MgVuse8jEkLnGRGqepNzHrJ

NS 2

dns1.registrar-servers.com
dns2.registrar-servers.com

SOA 1

dns1.registrar-servers.com hostmaster.registrar-servers.com

TLS Certificates (3)

Common Name	Issuer	Expires
`apertus.org`	C=US, O=Let's Encrypt, CN=YR1	Sun, 27 Sep 2026 11:11:14 +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 (1)

www.apertus.org

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 apertus.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_ffbbb67d377ef18c
Output Hash: a9e276ee9246a963aa70e3bc31f5f033c554c43a1110adfdbc576e08fd7424eb
Signature: ed25519:fd3a604121016571428f9839341b9dde3631a0743edf7b811ca64a58386fe1fac77ae27accc43af67e72aba67a84416113f66ee454b823679aaaa3e7f2bc4008
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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