jdem.cz
Observed Aug 16, 2026, 15:20 UTC (10h 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
Google WorkspaceSecured byLet's Encrypt
Let's EncryptAlso usesGoogle Search Console
Google Search ConsoleIPv6 · 1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT
Steady. No change on record for jdem.cz 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 jdem.cz actually stands on - every host below is a signed observation
jdem.cz
A / AAAA
91.213.160.1372001:67c:68::89
2001serves the site
NS
ns.iinfo.czns6.adminit.cz
iinfo.cz + adminit.czanswers its DNS
MX
ASPMX.L.GOOGLE.COMALT1.ASPMX.L.GOOGLE.COMALT2.ASPMX.L.GOOGLE.COMALT3.ASPMX.L.GOOGLE.COM+1 more
Google Workspacereceives its email
TLS
jdem.cz
Let's Encryptissued its certificate
DNS Records
A 1
91.213.160.137
AAAA 1
2001:67c:68::89
MX 5
1ASPMX.L.GOOGLE.COM5ALT1.ASPMX.L.GOOGLE.COM5ALT2.ASPMX.L.GOOGLE.COM10ALT3.ASPMX.L.GOOGLE.COM10ALT4.ASPMX.L.GOOGLE.COM
TXT 1
google-site-verification=M2Bwkc-SRmWPG94-egeB3E7gYhOl1LVri6RP5DTGtmA
NS 2
ns.iinfo.czns6.adminit.cz
SOA 1
ns.iinfo.cz hostmaster.iinfo.cz
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
jdem.cz |
C=US, O=Let's Encrypt, CN=YE2 | Fri, 18 Sep 2026 06:25:49 +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 (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_54357c83205b606b- Output Hash
135761d8f0a794bf25eabda791581cde52df147015a00889dc43896a8acd1c0a- Signature
ed25519:c2d1d3d1975022e4291616cbcecede3e21b7cdeaa8284db039431ac7953af8b24b1dd5f2ebcf69e1dfe7c3869e0b3dec118f5f7f0257369e41037d543118f303- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast