ussif.org

Observed Jul 25, 2026, 06:26 UTC (8d 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

Also usesGoogle Search Console

2 subdomains · tranco

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

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

ussif.org

A / AAAA

75.2.60.599.83.231.61

unattributedserves the site

carter.ns.cloudflare.comchin.ns.cloudflare.com

cloudflare.comanswers its DNS

ussif-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

www.ussif.org

Let's Encryptissued its certificate

DNS Records

A 2

75.2.60.5
99.83.231.61

MX 1

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

TXT 4

brevo-code:644a028c29cc5fa7c5a0879aa42d8e27
google-site-verification=Em7JqcYI_l-gfiFhqWDWX48HgfAZgGL66hReftpijgc
v=spf1 include:spf.protection.outlook.com -all
v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com

NS 2

carter.ns.cloudflare.com
chin.ns.cloudflare.com

SOA 1

carter.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`www.ussif.org`	C=US, O=Let's Encrypt, CN=YE1	Fri, 28 Aug 2026 06:42:31 +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 (2)

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

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

Ed25519 Receipt

Receipt ID: rcpt_742303f5b6abf5f8
Output Hash: 2dc65e2d2831554af66cb133f2c61d864f32bbb76f404d8008e67b3ae148318a
Signature: ed25519:c471ddf2f966c8248ebae4a70b2271adedc5a3ca25bbc15c0d4d5969bbfa5519ef4cd8d216f4420611fa513fc5e84dad0c2e854f95157b9689b94ad5d7f6b404
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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