codepen.io

Observed 2026-07-14T01:23:37.905Z (9h ago). Every field below was attested with an Ed25519 signature at scan time.

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search Console

IPv6 · 5 subdomains · 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

104.16.147.32104.16.163.322606:4700::6810:93202606:4700::6810:a320

Cloudflareserves the site

kristin.ns.cloudflare.comalbert.ns.cloudflare.com

cloudflare.comanswers its DNS

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

Google Workspacereceives its email

HTTPS probe

bot_blocked Blocked our probe (WAF / bot protection) 403 blocked by cloudflare - bot protection active

HTTP status403

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time6 ms

DNS resolutionNOERROR

MCP This domain advertises an AI service endpoint at _mcp._tcp.

vsb9u095pmq51qj6nuoeqkvi6h

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

DNS Records

A 2

104.16.147.32
104.16.163.32

AAAA 2

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

MX 5

1aspmx.l.google.com
5alt2.aspmx.l.google.com
5alt1.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
v=DKIM1; (detected)
vsb9u095pmq51qj6nuoeqkvi6h
v=DNSSEC1; (detected)

NS 2

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

SOA 1

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

TLS Certificates (0)

None.

Subdomains (5)

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: 5fecbd2a-897f-4577-a934-00ffbc8a5ea9
Output Hash: d56e13ec0e44828e7da2edd5be8a087fcabe394382b9356a7a1dc61fff291d58
Signature: ed25519:74fab43cbe777f272dceddf86287f64aab6317ce386f0e8dd12292081a98b29c8e69d40d19352b60db1e19503045718faf977e98da7b931d9abc1123695b4d01
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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