usad.org

Observed Jul 27, 2026, 19:09 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

Email byMicrosoft 365

Secured byLet's Encrypt

1 subdomain · domcop

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

INFRASTRUCTURE MAPwhat usad.org actually stands on - every host below is a signed observation

usad.org

A / AAAA

209.131.228.187

unattributedserves the site

ns1.bdm.microsoftonline.comns2.bdm.microsoftonline.comns3.bdm.microsoftonline.comns4.bdm.microsoftonline.com

microsoftonline.comanswers its DNS

usad-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

usad.org

Let's Encryptissued its certificate

DNS Records

A 1

209.131.228.187

MX 1

0usad-org.mail.protection.outlook.com

TXT 3

mscid=RbzTWm2m9/DfKvh/ejF0tKXwld/2IieTf5Labgy3VmiDKNA6eoDSvEwkLu1BswppiyKQVPejfCdIdKYhUU5Htw==
v=spf1 include:_spf.mlsend.com ip4:162.219.105.65/24 ip4:209.131.228.178 include:spf.protection.outlook.com -all
mailerlite-domain-verification=9202d9e312aba4eeabf1dbc7c9316de2e0299541

NS 4

ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com

SOA 1

ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com

TLS Certificates (3)

Common Name	Issuer	Expires
`usad.org`	C=US, O=Let's Encrypt, CN=YR2	Wed, 07 Oct 2026 17:07:27 +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 (1)

www.usad.org

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 usad.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_3bd8494234eb5da9
Output Hash: 391620ad61ff604c2576e50379db948e19d0adc3d0c42106dc09562291cf7e38
Signature: ed25519:95223ee246749ddbca011ca4a6264b4e3e83eac574d08209f84a11ff537463bc441fafb7200769cb857d1391db9dc7cab2f4084c2cbdc92f9d17b2a4fbeb0f01
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/usad.org