usability.gov

Observed Jul 27, 2026, 14:21 UTC (6d 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

Secured byLet's Encrypt

IPv6 · tranco_100k

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

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

usability.gov

A / AAAA

52.85.193.3552.85.193.9152.85.193.10752.85.193.114+8 more

2600serves the site

ns-1144.awsdns-15.orgns-134.awsdns-16.comns-1783.awsdns-30.co.ukns-552.awsdns-05.net

awsdns-15.org + awsdns-16.com + moreanswers its DNS

TLS

usability.gov

Let's Encryptissued its certificate

DNS Records

A 4

52.85.193.35
52.85.193.91
52.85.193.107
52.85.193.114

AAAA 8

2600:9000:215a:aa00:6:d1ab:b540:93a1
2600:9000:215a:9800:6:d1ab:b540:93a1
2600:9000:215a:bc00:6:d1ab:b540:93a1
2600:9000:215a:6800:6:d1ab:b540:93a1
2600:9000:215a:de00:6:d1ab:b540:93a1
2600:9000:215a:c000:6:d1ab:b540:93a1
2600:9000:215a:a400:6:d1ab:b540:93a1
2600:9000:215a:5400:6:d1ab:b540:93a1

TXT 2

v=spf1 -all
v=DMARC1; p=reject; pct=100; fo=1; ri=86400; rua=mailto:dmarcreports@gsa.gov,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:dmarcfailures@gsa.gov

NS 4

ns-1144.awsdns-15.org
ns-134.awsdns-16.com
ns-1783.awsdns-30.co.uk
ns-552.awsdns-05.net

SOA 1

ns-1783.awsdns-30.co.uk awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`usability.gov`	C=US, O=Let's Encrypt, CN=YR2	Sun, 04 Oct 2026 09:20:38 +0000
`YR2`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	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 usability.gov. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_b1e73da45c8f4ba8
Output Hash: 6bfc8e62a9dba53553d3df2ac41f8b6b15c2fc9eaf5e6fa4f84f05ff8f5af2f5
Signature: ed25519:e54f6319d99c130dd6e2b87bb6b324dc701db89189f11c84bc0f10b0034953d81cdc828398c30b530225f714c0e6c5e7308060e436b51d8380cfd7023ec4e205
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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