circleci.com

Observed Jul 18, 2026, 12:01 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAmazon

Email byProofpoint

Secured byAmazon

Registered withAmazon Registrar, Inc.

Also usesZoomAtlassianDockerDocuSignGoogle Search ConsoleHubSpotLinear

4 subdomains · devops

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

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

circleci.com

A / AAAA

3.167.88.233.167.88.183.167.88.1073.167.88.128

Amazonserves the site

ns-1065.awsdns-05.orgns-1572.awsdns-04.co.ukns-225.awsdns-28.comns-837.awsdns-40.net

awsdns-05.org + awsdns-04.co.uk + moreanswers its DNS

mxa-00672001.gslb.pphosted.commxb-00672001.gslb.pphosted.com

Proofpointreceives its email

TLS

circleci.com

Amazonissued its certificate

DNS Records

A 4

3.167.88.23
3.167.88.18
3.167.88.107
3.167.88.128

MX 2

10mxa-00672001.gslb.pphosted.com
10mxb-00672001.gslb.pphosted.com

TXT 29

0rSSf1XYrVTQD0nx3uXSOqfLql67Dq7NHJxd7Bb4AEs=
DC5E374380
OSSRH-51450
ZOOM_verify_XxtkbTmXREqW-gC9oUt_JQ
adobe-idp-site-verification=e62bdaaa6e859ff8bd5bf72625dbbd549c23f0de1fdb766235ef9e3040001e67
anthropic-domain-verification-v8cdhs=P5CPYQkBtkjBPMgAZIvtut9zd
apple-domain-verification=BkV5OZenVheGWVKC
astro-domain-verification=cml9sndz92qqm01jm14o8nqho
atlassian-domain-verification=9tj+F5NsRlmMKY+gbNLn4kP5OmRWYtiQbLcnIFwe3m4l+99gvwWJU5/vJ+3f0TOq
box-domain-verification=5f46d2be1dbceca19facc856c1c495d1e542fc177dfd64eb9cce08de605c198a

NS 4

ns-1065.awsdns-05.org
ns-1572.awsdns-04.co.uk
ns-225.awsdns-28.com
ns-837.awsdns-40.net

SOA 1

ns-1572.awsdns-04.co.uk awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`circleci.com`	C=US, O=Amazon, CN=Amazon RSA 2048 M04	Thu, 04 Feb 2027 23:59:59 +0000
`Amazon RSA 2048 M04`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:26:35 +0000
`Amazon Root CA 1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +0000

Subdomains (4)

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 circleci.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: e37a520c-ee5a-480e-ab65-5fc040d0e133
Output Hash: 570e9aba74085d528767be3ff3fd4f069f0a9ca7f45c39aa3ab259900b88c506
Signature: ed25519:9fefa9d0c9b617d4e8f1c328c5da2d8bfdd207c0c950e2ac78d8ffff98e20f0ab945563ab63dd444a1e42cf06fea0054c8026001efd1f414791f584891d05d04
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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