quad9.net

Observed Jul 22, 2026, 12:27 UTC (2d 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 onCloudflare

Email byMailchimp

Registered withKey-Systems GmbH

Also usesSlackGoogle Search Console

IPv6 · 9 subdomains · cybersecurity_expanded

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

INFRASTRUCTURE MAPwhat quad9.net actually stands on - every host below is a signed observation

quad9.net

A / AAAA

195.176.255.1382001:620:2020:5:9::138

Cloudflareserves the site

ns2.pch.netns3.pch.netanyns.pch.net

pch.netanswers its DNS

mx2.quad9.netmx4.quad9.netmx1.quad9.net

Mailchimpreceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time2528 ms

DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

195.176.255.138

AAAA 1

2001:620:2020:5:9::138

MX 3

20mx2.quad9.net
10mx4.quad9.net
5mx1.quad9.net

TXT 5

slack-domain-verification=EhulLkEHEcEGaLail027zEvZEfO54vuTRtNOKfY9
google-site-verification=pubFqUAodApNRC6sXcA_NNli9mak_IIlLSu6SWjyvPg
v=spf1 a mx include:_spf.quad9.net include:mail.zendesk.com include:servers.mcsv.net ~all
v=DMARC1; p=quarantine; sp=none; rua=mailto:reports@quad9.net; fo=1
v=DNSSEC1; (detected)

NS 3

ns2.pch.net
ns3.pch.net
anyns.pch.net

SOA 1

admin1.sjc.rrdns.pch.net hostmaster.pch.net

TLS Certificates (0)

None.

Subdomains (9)

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 quad9.net. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/quad9.net">
  <img src="https://domaindrift.io/badge/quad9.net.svg"
       width="300" height="64" alt="DomainDrift signed observations for quad9.net">
</a>

Ed25519 Receipt

Receipt ID: rcpt_21f5cb021a204dff
Output Hash: 84bcfd4ef4790f86b1fdb50c4122cf38aa866edee57598e000fbc46182c413dd
Signature: ed25519:ca2349c2677415968bf3c66a781bf1055d0fccf302a64fe5401dea5885999456e93a1953c2c7972d8f41408fc104c565c7d6b8b2701e79f8c87b02fe25779808
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/quad9.net