amsp.cz
Observed Jul 28, 2026, 07:09 UTC (2d 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
IPv6 · 1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat amsp.cz actually stands on - every host below is a signed observation
amsp.cz
A / AAAA
178.251.187.312a00:1ed0:45::de
2a00serves the site
NS
ns1.websupport.czns2.websupport.czns3.websupport.eu
websupport.cz + websupport.euanswers 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
www.amsp.cz
Let's Encryptissued its certificate
DNS Records
A 1
178.251.187.31
AAAA 1
2a00:1ed0:45::de
MX 5
1aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com
TXT 4
MS=ms91720602google-site-verification=VMLJz7lCbFhHHB9CG1WO3-NSvVt_9j5jAdQTb4Z-VC0v=spf1 ip4:194.145.180.34 include:spf.active24.com include:_spf.google.com include:spf.qmsv.net include:amazonses.com ~allv=DMARC1; p=none
NS 3
ns1.websupport.czns2.websupport.czns3.websupport.eu
SOA 1
ns1.websupport.cz admin.websupport.cz
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.amsp.cz |
C=US, O=Let's Encrypt, CN=YR1 | Thu, 10 Sep 2026 06:35:36 +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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_54818c5cce02fc44- Output Hash
15f8f3de997c61767ece86544d321d8c3ab6e41b223497ffccb69629ad48da79- Signature
ed25519:99dfae45fc11383ed20657d8f9fb91b8f3da719b96cdf2ac9b1f472c35ba7d34db58f51bbf22dbc651fa927ec5ac79fa8d614994e26817b24cce63ab086c8302- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast