codepen.io

Observed Jul 21, 2026, 19:08 UTC (11h 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

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Secured byGoogle Trust Services

Also usesGoogle Search Console

IPv6 · dev_tools

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

INFRASTRUCTURE MAPwhat codepen.io actually stands on - every host below is a signed observation

codepen.io

A / AAAA

104.16.163.32104.16.147.322606:4700::6810:a3202606:4700::6810:9320

Cloudflareserves the site

albert.ns.cloudflare.comkristin.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more

Google Workspacereceives its email

TLS

codepen.io

Google Trust Servicesissued its certificate

DNS Records

A 2

104.16.163.32
104.16.147.32

AAAA 2

2606:4700::6810:a320
2606:4700::6810:9320

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com

TXT 6

v=spf1 include:s43465759.fdmarc.net ~all
google-site-verification=ee6yZSYLRMH7NdG8DSox4-fH0btH7GdMbMyY7zHenxY
v=DMARC1; p=none; rua=mailto:794c09812c0a4c7a8f4d400401c310ac@dmarc-reports.cloudflare.net; aspf=s; adkim=s
vsb9u095pmq51qj6nuoeqkvi6h
vsb9u095pmq51qj6nuoeqkvi6h
vsb9u095pmq51qj6nuoeqkvi6h

NS 2

albert.ns.cloudflare.com
kristin.ns.cloudflare.com

SOA 1

albert.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`codepen.io`	C=US, O=Google Trust Services, CN=WE1	Mon, 12 Oct 2026 03:43:46 +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 codepen.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_318ee87cddc341fa
Output Hash: bcc66a21fdc0cdb386a96c312735eb908ce87901a1481c1b3adfa59ce1a6220a
Signature: ed25519:48c9911a4d7f23394ac4a724d637aa0a986d9b8501e47518b5940902418776f1cf86e1ea0f41db1d758f21107eab484a10c89f1cd13b4aac398ab59f0970e000
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/codepen.io