flatiron.com

Observed Jul 21, 2026, 19:09 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 byProofpoint

Secured byGoogle Trust Services

Registered withGoDaddy.com, LLC

Also usesAtlassianDockerDocuSignGoogle Search ConsoleMiro

IPv6 · health_biotech

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

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

flatiron.com

A / AAAA

172.66.133.32172.66.136.1552606:4700:10::ac42:85202606:4700:10::ac42:889b

Cloudflareserves the site

kara.ns.cloudflare.comtim.ns.cloudflare.com

cloudflare.comanswers its DNS

mxa-003fa001.gslb.pphosted.commxb-003fa001.gslb.pphosted.com

Proofpointreceives its email

TLS

2b458e95.sni.cloudflaressl.com

Google Trust Servicesissued its certificate

DNS Records

A 2

172.66.133.32
172.66.136.155

AAAA 2

2606:4700:10::ac42:8520
2606:4700:10::ac42:889b

MX 2

10mxa-003fa001.gslb.pphosted.com
10mxb-003fa001.gslb.pphosted.com

TXT 23

9z706cgdcjkljk57hwpjcs38crpz5p7h
MS=EAEB33728A7BBFF1EE6EA6B8AD6F8273D0387D2D
adobe-idp-site-verification=e7f37aecdfa4349d8686a642e6b23cc1b211698ee7590653d334932f918c9181
apple-domain-verification=snE3FxrLYh8CU0q3
atlassian-domain-verification=XRbE+e7/YsQEAqN6TrLeV3gaKZJ+TziOZv3LRS5PdkXy5XK0Fuq0qb/NXVrdMDZM
beam-verification=theJBW6fBxgz9e9QweznEOw4b02twFY4nQK9rcpjHmNkbbnn
cursor-domain-verification-xpee50=qhOKF8lNvofwAqDD212B5XSMO
docker-verification=5fc7ff0d-8c01-4b4b-b3a0-5c0ad143ce61
docusign=b8af8ad5-9ad1-4389-895c-4b7ce192bf80
google-site-verification=Zv35_fbCz8zYCCnujWUJqgT_6wvRdtEfCR2cpSy_e6Y

NS 2

kara.ns.cloudflare.com
tim.ns.cloudflare.com

SOA 1

kara.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`2b458e95.sni.cloudflaressl.com`	C=US, O=Google Trust Services, CN=WE1	Sat, 19 Sep 2026 20:25:40 +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 flatiron.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_675d614f7532e6c0
Output Hash: dbcd15c3ce9ed829e7974d584664a789a238206b25d9608b30c4860197e1cb93
Signature: ed25519:31667f1c03a1342e312286e3648a6401692545100562be3c51fe70857c5d59fb95108e95d37bb97c1a770c57c93e8cf39f5e4724ab1f935fe535d2af65d09709
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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