rh-arch.com
Observed Jul 28, 2026, 09:44 UTC (1d 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
Secured byLet's Encrypt
IPv6 · 1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat rh-arch.com actually stands on - every host below is a signed observation
rh-arch.com
A / AAAA
81.91.86.122001:1568::12
2001serves the site
NS
ns.web4u.czns2.web4u.cz
web4u.czanswers its DNS
MX
rharch-com0e.mail.protection.outlook.com
Microsoft 365receives its email
TLS
rh-arch.com
Let's Encryptissued its certificate
DNS Records
A 1
81.91.86.12
AAAA 1
2001:1568::12
MX 1
0rharch-com0e.mail.protection.outlook.com
TXT 1
v=spf1 include:spf.protection.outlook.com -all
NS 2
ns.web4u.czns2.web4u.cz
SOA 1
ns.web4u.cz admin.web4u.cz
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
rh-arch.com |
C=US, O=Let's Encrypt, CN=YR2 | Tue, 15 Sep 2026 20:07:23 +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 (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_cceda08cf8d296ca- Output Hash
da2a53a984a95d94df94247f4a430c93fdc4b6ecdcceca94f11d4666a376f473- Signature
ed25519:ea11571cdf18f77ba717b6019320964b07641662987136deb1a39670d167366cc2e570ba01d9e2efa95847f77bac5d7f889cb37442bd5c56610d4523a3a20501- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast