usdn.org
Observed Aug 2, 2026, 18:41 UTC (14h 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.
Up right now
Email byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search Console
1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usdn.org actually stands on - every host below is a signed observation
usdn.org
A / AAAA
34.202.75.199
unattributedserves the site
NS
ns1.spinuhost.comns2.spinuhost.comns3.spinuhost.com
spinuhost.comanswers its DNS
MX
alt2.aspmx.l.google.comaspmx.l.google.comaspmx3.googlemail.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
usdn.org
Let's Encryptissued its certificate
DNS Records
A 1
34.202.75.199
MX 5
5alt2.aspmx.l.google.com1aspmx.l.google.com10aspmx3.googlemail.com5alt1.aspmx.l.google.com10aspmx2.googlemail.com
TXT 4
google-site-verification=JOjgg6u7SojdS1rCj4ZIDfo_8Lv9Ua2SN7bDv1AVMNwgoogle-site-verification=eWMyzP5XvyoQ9diHmpK0BhNh0hxxBP7PUeckNbSKSMUv=spf1 include:_spf.google.com include:spf.mandrillapp.com include:_spf.createsend.com include:_spf.alchemer.com ?allgoogle-site-verification=7morV7Bsutkywj0J_fOxdoNOrLQpMv78X-jc7TJtvng
NS 3
ns1.spinuhost.comns2.spinuhost.comns3.spinuhost.com
SOA 1
ns1.spinuhost.com noc.bayshoresolutions.com
DMARC_RECORDS 1
v=DMARC1; p=none;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
usdn.org |
C=US, O=Let's Encrypt, CN=YR2 | Fri, 09 Oct 2026 18:10:41 +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)
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 receiptEd25519 Receipt
- Receipt ID
rcpt_e269ec01715b6517- Output Hash
dfbe4b3588fa9284692bbddde8f3c4ddcf9d5c60e6ace1cc306f35ff223815a6- Signature
ed25519:1a5cf377d85a97f41935d881ac85763c042584bf24919295de2be50db7c2eae552f2bea38aace1975b59b1c4309b10c3c7c826661e95d5e279c125cfe4f60403- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast