as4u.org

Observed Jul 24, 2026, 08:57 UTC (8h 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

Not responding

Secured byDigiCert

Also usesGoogle Search Console

IPv6 · tranco

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

INFRASTRUCTURE MAPwhat as4u.org actually stands on - every host below is a signed observation

as4u.org

A / AAAA

88.86.100.1952a01:28:ca:72::100:195

2a01serves the site

ns.district9.czns.as4u.orgns.as4u.cz

district9.cz + as4u.org + moreanswers its DNS

mx2.as4u.orgmx1.as4u.org

as4u.orgreceives its email

TLS

*.as4u.org

DigiCert Incissued its certificate

DNS Records

A 1

88.86.100.195

AAAA 1

2a01:28:ca:72::100:195

MX 2

10mx2.as4u.org
5mx1.as4u.org

TXT 9

google-site-verification=iY5smOkRtqbtBcjVImivHp9wfkPAoN3FnQDgdF6FvZU
v=spf1 include:_spf.as4u.org ~all
v=DMARC1; p=quarantine; adkim=s
google-site-verification=iY5smOkRtqbtBcjVImivHp9wfkPAoN3FnQDgdF6FvZU
v=spf1 include:_spf.as4u.org ~all
v=spf1 include:_spf.as4u.org ~all
google-site-verification=iY5smOkRtqbtBcjVImivHp9wfkPAoN3FnQDgdF6FvZU
v=spf1 include:_spf.as4u.org ~all
google-site-verification=iY5smOkRtqbtBcjVImivHp9wfkPAoN3FnQDgdF6FvZU

NS 3

ns.district9.cz
ns.as4u.org
ns.as4u.cz

SOA 1

ns.as4u.org hostmaster.as4u.org

TLS Certificates (2)

Common Name	Issuer	Expires
`*.as4u.org`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=RapidSSL TLS RSA CA G1	Mon, 21 Sep 2026 23:59:59 +0000
`RapidSSL TLS RSA CA G1`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Tue, 02 Nov 2027 12:24:33 +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 as4u.org. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/as4u.org">
  <img src="https://domaindrift.io/badge/as4u.org.svg"
       width="300" height="64" alt="DomainDrift signed observations for as4u.org">
</a>

Ed25519 Receipt

Receipt ID: rcpt_b3ef3453d0aaeeba
Output Hash: 4ee6f6b078fe61fac3f83ee6f08a93d8242244c7392a456139601641f9f53d6a
Signature: ed25519:09377721f0d4e481fde265b9f7fd95dc4df54bb4560ca25c3b47d1d6b7e717441b8526315b81b2a5052fa4702b5e9404d1b73a86e0c3adf6e3d8f787bf9f450a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/as4u.org