jamusa.com
Observed Aug 16, 2026, 06:29 UTC (9m 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 byMicrosoft 365
Microsoft 365Secured byLet's Encrypt
Let's Encrypt1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat jamusa.com actually stands on - every host below is a signed observation
jamusa.com
A / AAAA
52.4.54.3
unattributedserves the site
NS
ns54.worldnic.comns53.worldnic.com
worldnic.comanswers its DNS
MX
jamusa-com.mail.protection.outlook.com
Microsoft 365receives its email
TLS
jamusa.com
Let's Encryptissued its certificate
DNS Records
A 1
52.4.54.3
MX 1
0jamusa-com.mail.protection.outlook.com
TXT 1
v=spf1 include:spf.mailjet.com include:spf.protection.outlook.com include:_spf.google.com -all
NS 2
ns54.worldnic.comns53.worldnic.com
SOA 1
NS53.WORLDNIC.com namehost.WORLDNIC.com
DMARC_RECORDS 1
v=DMARC1; p=reject; rua=mailto:dlqs2rop@ag.us.dmarcian.com; sp=reject; pct=100; aspf=s
MTA_STS_RECORDS 1
v=STSv1;id=1597079711662;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
jamusa.com |
C=US, O=Let's Encrypt, CN=YR1 | Tue, 27 Oct 2026 23:59:35 +0000 |
YR1 |
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_2a7a271efa93769a- Output Hash
4507fd7f9b0522f79778312287fe18430d84495e170b838d1ba24ebede17d94f- Signature
ed25519:09e121cc01483adb7081ed912c565f618d211b0d15a16eaae1dc38ba12ffb4ac2361dfb4e2d389c1c05ab8dc3c879dca6b7da19444cd181f6c58822507e31202- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast