s4om.org
Observed Aug 16, 2026, 07:39 UTC (2h 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
Runs onCloudflare
CloudflareEmail byMicrosoft 365
Microsoft 365Secured byLet's Encrypt
Let's Encryptmajestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat s4om.org actually stands on - every host below is a signed observation
s4om.org
A / AAAA
141.193.213.11141.193.213.10
Cloudflareserves the site
NS
dora.ns.cloudflare.comkurt.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
s4om-org.mail.protection.outlook.com
Microsoft 365receives its email
TLS
s4om.org
Let's Encryptissued its certificate
DNS Records
A 2
141.193.213.11141.193.213.10
MX 1
1s4om-org.mail.protection.outlook.com
TXT 2
MS=ms78227454v=spf1 a include:spf.protection.outlook.com include:servers.mcsv.net ip4:184.106.55.136 ip4:151.101.130.159 -all
NS 2
dora.ns.cloudflare.comkurt.ns.cloudflare.com
SOA 1
dora.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
s4om.org |
C=US, O=Let's Encrypt, CN=YE2 | Sat, 07 Nov 2026 22:28:34 +0000 |
YE2 |
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 (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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_b40e44711e14999d- Output Hash
f26d680b0095837e4a80dc373932fb92ea21d25f154607b9fa29e28be69792f9- Signature
ed25519:c08193299ddf002f5ee9932ae7fc30b04089c5659b833666c4b57cf59ea30c02e6f3b9cae3b3635615f60e99bd76c7633eb43eab80ef9dd2990fae37af22b505- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast