arf.at
Observed Jul 23, 2026, 11:59 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
Secured byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat arf.at actually stands on - every host below is a signed observation
arf.at
A / AAAA
217.196.146.236
unattributedserves the site
NS
adns001.dc1.conova.comadns004.conova.atadns002.dc1.conova.comadns003.conova.at
conova.com + conova.atanswers its DNS
MX
smtp.tophosting.at
tophosting.atreceives its email
TLS
www.arf.at
Let's Encryptissued its certificate
DNS Records
A 1
217.196.146.236
MX 1
10smtp.tophosting.at
TXT 1
v=spf1 include:_spf.tophosting.at ~all
NS 4
adns001.dc1.conova.comadns004.conova.atadns002.dc1.conova.comadns003.conova.at
SOA 1
adns001.dc1.conova.com domainadmin.conova.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
www.arf.at |
C=US, O=Let's Encrypt, CN=YE2 | Tue, 06 Oct 2026 06:06:57 +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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_acc66aafb919d6bc- Output Hash
11040bc8aed073a06870f56347d0445cc956976b25ae707e90f7852d87afb229- Signature
ed25519:1c2a757eb8eefce50b731a231b123ae07e4e946e650ba8623fd5c5480488f41b44a794c51410e0307d11724e2295e41bc6d6f35c71efb71d450c473f71cc4e04- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast