s4d4c.eu
Observed Aug 16, 2026, 14:02 UTC (12h 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 Encryptdomcop
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT
Steady. No change on record for s4d4c.eu in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.
INFRASTRUCTURE MAPwhat s4d4c.eu actually stands on - every host below is a signed observation
s4d4c.eu
A / AAAA
81.19.159.83
unattributedserves the site
NS
ns1.world4you.atns2.world4you.at
world4you.atanswers its DNS
MX
s4d4c-eu.mail.protection.outlook.com
Microsoft 365receives its email
TLS
*.s4d4c.eu
Let's Encryptissued its certificate
DNS Records
A 1
81.19.159.83
MX 1
0s4d4c-eu.mail.protection.outlook.com
TXT 2
MS=ms61139389v=spf1 include:spf.protection.outlook.com -all
NS 2
ns1.world4you.atns2.world4you.at
SOA 1
ns1.world4you.at hostmaster.world4you.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.s4d4c.eu |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 24 Oct 2026 15:34:30 +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 (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_606f22a7d8909d6a- Output Hash
4a8bdf9044a405611220ed581e36558a37abe4552335d66e5414b7411d2fa8db- Signature
ed25519:6c4b48d135bd6ee91e1897e60a000859e9fb72c0209d0d356746946925c522e95c0e34d6860774e0b8c166f0de462ff331fc3dc81941d41c83ad8b850950b904- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast