forpsi.cz
Observed Jul 18, 2026, 13:03 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Secured byLet's Encrypt
IPv6 · tranco_20k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat forpsi.cz actually stands on - every host below is a signed observation
forpsi.cz
A / AAAA
81.2.196.1712001:15e8:110:7d00::718
Cloudflareserves the site
NS
ns.forpsi.czns.forpsi.itns.forpsi.net
forpsi.cz + forpsi.it + moreanswers its DNS
MX
mx.forpsi.com
forpsi.comreceives its email
TLS
forpsi.cz
Let's Encryptissued its certificate
DNS Records
A 1
81.2.196.171
AAAA 1
2001:15e8:110:7d00::718
MX 1
10mx.forpsi.com
TXT 5
v=spf1 mx ip4:81.2.193.0/24 ip4:81.2.194.0/23 ip4:81.2.196.0/24 ip4:64.99.180.0/26 -allv=spf1 mx ip4:81.2.193.0/24 ip4:81.2.194.0/23 ip4:81.2.196.0/24 ip4:64.99.180.0/26 -allv=spf1 mx ip4:81.2.193.0/24 ip4:81.2.194.0/23 ip4:81.2.196.0/24 ip4:64.99.180.0/26 -allv=spf1 mx ip4:81.2.193.0/24 ip4:81.2.194.0/23 ip4:81.2.196.0/24 ip4:64.99.180.0/26 -allv=spf1 mx ip4:81.2.193.0/24 ip4:81.2.194.0/23 ip4:81.2.196.0/24 ip4:64.99.180.0/26 -all
NS 3
ns.forpsi.czns.forpsi.itns.forpsi.net
SOA 1
ns.forpsi.net admin.forpsi.net
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
forpsi.cz |
C=US, O=Let's Encrypt, CN=YE1 | Sun, 20 Sep 2026 20:59:14 +0000 |
YE1 |
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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
718933cc-fe7d-4a77-8646-41b9d04732a1- Output Hash
9307573c70388a9a89b9a947ef9a1490a0ff8f8a47bd0a3329f9490e55dc22db- Signature
ed25519:944672b5dc6cb5134f824c5eea141fba80a8b30b0c84bd618590fd01d256c5942f9874301738fe9b7cb1ea15e234ac3fdb0c555ab51df0908626df931186550e- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast