lin.cat
Observed Aug 11, 2026, 12:03 UTC (11h 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 byProtonMail
Secured byLet's Encrypt
domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat lin.cat actually stands on - every host below is a signed observation
lin.cat
A / AAAA
185.199.108.153185.199.111.153185.199.109.153185.199.110.153
unattributedserves the site
NS
ns1.hover.comns2.hover.com
hover.comanswers its DNS
MX
mailsec.protonmail.chmail.protonmail.ch
ProtonMailreceives its email
TLS
lin.cat
Let's Encryptissued its certificate
DNS Records
A 4
185.199.108.153185.199.111.153185.199.109.153185.199.110.153
MX 2
10mailsec.protonmail.ch1mail.protonmail.ch
TXT 3
v=spf1 include:_spf.protonmail.ch ~allapple-domain=uELaitUEELABnWC2protonmail-verification=5459e328c7a41b9aaa4cd1eb5c1cb3d291d57e83
NS 2
ns1.hover.comns2.hover.com
SOA 1
ns1.hover.com dnsmaster.hover.com
DMARC_RECORDS 1
v=DMARC1; p=quarantine
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
lin.cat |
C=US, O=Let's Encrypt, CN=YR2 | Fri, 23 Oct 2026 12:20:49 +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 (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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_2bdc29471b93f1f9- Output Hash
5499a019357d81f9f4c39ad81172705b7358c48f05abdc4922f14f4a6294f8da- Signature
ed25519:99e53ec38408b787f9198325b8942743bcc1ff6e76b34f94d343960d4767b0713dd751bbea95f5d5918be38003354abf5ad7fb4678a878f8a90bedb9ec905104- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast