ar.ch

Observed Jul 24, 2026, 10:48 UTC (18h 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

IPv6 · 3 subdomains · tranco

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

INFRASTRUCTURE MAPwhat ar.ch actually stands on - every host below is a signed observation

ar.ch

A / AAAA

185.17.69.1202a04:503:0:1004::120

2a04serves the site

ns1-03.azure-dns.comns2-03.azure-dns.netns3-03.azure-dns.orgns4-03.azure-dns.info

azure-dns.com + azure-dns.net + moreanswers its DNS

dmzfml0001.ari-ag.chdmzfml0002.ari-ag.ch

ari-ag.chreceives its email

TLS

ar.ch

Let's Encryptissued its certificate

DNS Records

A 1

185.17.69.120

AAAA 1

2a04:503:0:1004::120

MX 2

10dmzfml0001.ari-ag.ch
11dmzfml0002.ari-ag.ch

TXT 3

v=spf1 include:_spf.ari-ag.ch a:ar03.snowflakehosting.ch -all
v=DMARC1;p=quarantine;rua=mailto:dmarc@ari-ag.ch;ruf=mailto:dmarc@ari-ag.ch
v=STSv1; id=20250513T010101;

NS 4

ns1-03.azure-dns.com
ns2-03.azure-dns.net
ns3-03.azure-dns.org
ns4-03.azure-dns.info

SOA 1

ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com

SRV 1

autodiscover.ar.ch:443 p0

CAA 3

issue "digicert.com"
issue "letsencrypt.org"
issue "swisssign.com"

TLS Certificates (4)

Common Name	Issuer	Expires
`ar.ch`	C=US, O=Let's Encrypt, CN=YE2	Thu, 03 Sep 2026 07:20:06 +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 (3)

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 ar.ch. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_85a2aa1c6d4261b7
Output Hash: 1fcb3e4ce7bafd09418bb8a09e0251ac9c60dc9a9fdb528d74873cd76e26655d
Signature: ed25519:e823782898af3e917e4a9fdadfdca65295d3db3f7e2291a670e2d165bee98ccfb7cb25776908c3b5461a901238a33b041153b28f1202f07b7482266121be200d
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/ar.ch