doi.gov

Observed Jul 24, 2026, 17:43 UTC (13h 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 onAkamai International B.V

Email byMicrosoft 365

Secured byLet's Encrypt

Registered withget.gov

IPv6 · government_expanded

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

INFRASTRUCTURE MAPwhat doi.gov actually stands on - every host below is a signed observation

doi.gov

A / AAAA

23.48.224.6923.48.224.742600:1408:ec00:f::1730:cb262600:1408:ec00:f::1730:cb30

Akamai International B.Vserves the site

liz.ns.cloudflare.comwest.ns.cloudflare.com

cloudflare.comanswers its DNS

doi-gov.mail.protection.outlook.com

Microsoft 365receives its email

TLS

doi.gov

Let's Encryptissued its certificate

DNS Records

A 2

23.48.224.69
23.48.224.74

AAAA 2

2600:1408:ec00:f::1730:cb26
2600:1408:ec00:f::1730:cb30

MX 1

0doi-gov.mail.protection.outlook.com

TXT 5

_6hn0jgfggckinomz4gkl4ybsiohpv2u
_zvymuoe0192rlguzk6z1mjgg837vhpd
openai-domain-verification=dv-z1QahsCTwflXMhgtSZxfUNwf
v=spf1 include:spf.protection.outlook.com ip4:137.227.82.0/26 ip4:137.227.134.0/26 -all
v=DMARC1;p=reject;rua=mailto:dmarc_reports@doi.gov,mailto:reports@dmarc.cyber.dhs.gov

NS 2

liz.ns.cloudflare.com
west.ns.cloudflare.com

SOA 1

liz.ns.cloudflare.com dns.cloudflare.com

SRV 1

xmpp.doi.gov:5269 p5

TLS Certificates (4)

Common Name	Issuer	Expires
`doi.gov`	C=US, O=Let's Encrypt, CN=YE1	Sat, 19 Sep 2026 14:30:43 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +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 doi.gov. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_fe569629fe8abc3e
Output Hash: 9e0cf4014ee637a1f2f30732b8559bdf6aaf9a95d6500ab018bd91a14a6261d6
Signature: ed25519:d9bcfb377a7f92274bfd5299dae096e6f2aff1e0ea9acb8de7a97431ec38c17c8df344cf64b0d073fb12e9337d733fedb67ad559df0aed3224759a1cc5b20b0e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/doi.gov