headlessui.com

Observed Jul 18, 2026, 12:01 UTC (14h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Secured byGoogle Trust Services

Registered withTucows Domains Inc.

IPv6 · misc

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

INFRASTRUCTURE MAPwhat headlessui.com actually stands on - every host below is a signed observation

headlessui.com

A / AAAA

104.21.49.12172.67.188.1962606:4700:3032::6815:310c2606:4700:3033::ac43:bcc4

Cloudflareserves the site

anuj.ns.cloudflare.comroxy.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

headlessui.com

Google Trust Servicesissued its certificate

DNS Records

A 2

104.21.49.12
172.67.188.196

AAAA 2

2606:4700:3032::6815:310c
2606:4700:3033::ac43:bcc4

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 1

v=spf1 include:_spf.google.com ~all

NS 2

anuj.ns.cloudflare.com
roxy.ns.cloudflare.com

SOA 1

anuj.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`headlessui.com`	C=US, O=Google Trust Services, CN=WE1	Mon, 21 Sep 2026 05:44:07 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +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 headlessui.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 0a64f8b5-b8bb-4c56-a546-f2bb091da649
Output Hash: dc0275a11d50a27a35ad4749e3219c3938dd69b0f11c03a30f4b92d70bca9737
Signature: ed25519:c58752ab12d3eb14f047cf99744d7e53095ad7d88346f014c45b5f9d9da8bc146cf070dac6174d5f4b6dfee79ccc3e3b5f0a3f5336af4b30e231130a9def420c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/headlessui.com