doctena.at
Observed Jul 25, 2026, 09:13 UTC (6d 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
Runs onCloudflare
Email byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search Console
IPv6 · 1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat doctena.at actually stands on - every host below is a signed observation
doctena.at
A / AAAA
104.18.1.190104.18.0.1902606:4700::6812:1be2606:4700::6812:be
Cloudflareserves the site
NS
eve.ns.cloudflare.comfred.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
doctena.at
Let's Encryptissued its certificate
DNS Records
A 2
104.18.1.190104.18.0.190
AAAA 2
2606:4700::6812:1be2606:4700::6812:be
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 7
ca3-2c0be06ba2dd45cd850e32774a73e838google-site-verification=0anpqSwm4hlByXR714Vn6C7-hp_6qjOkv5nZIyJAziEgoogle-site-verification=DozEhUMTVtTiXwhysWNNb3PAOtDrPPRcD4beZIVvDp4google-site-verification=MJXlklUAL_PFojlx8MVI_LMaVcNN1cuYbzrVgarT_VYgoogle-site-verification=xphoOGtdsX0cI96POpe5G6FZChMr0EfBmvRETw1uC9Qv=spf1 a mx include:spf.mtasv.net include:_spf.google.com include:mail.zendesk.com -allv=DMARC1; p=quarantine; pct=100; rua=mailto:re+wz17ojaykwo@dmarc.postmarkapp.com; ruf=mailto:dmarc@doctena.com; sp=quarantine; aspf=r;
NS 2
eve.ns.cloudflare.comfred.ns.cloudflare.com
SOA 1
eve.ns.cloudflare.com dns.cloudflare.com
CAA 12
issue "amazon.com"issue "comodoca.com"issue "digicert.com; cansignhttpexchanges=yes"issue "letsencrypt.org"issue "pki.goog; cansignhttpexchanges=yes"issue "ssl.com"issuewild "amazon.com"issuewild "comodoca.com"issuewild "digicert.com; cansignhttpexchanges=yes"issuewild "letsencrypt.org"
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
doctena.at |
C=US, O=Let's Encrypt, CN=YE1 | Sun, 27 Sep 2026 15:45:26 +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 (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_faa689802bcaa98f- Output Hash
85886ff9fe52fe2524ec6b3e038ea2e3c311fb8828e0caec62d2b95ebaf56c65- Signature
ed25519:d35a2e7924f4ad5698fd043e133ba0864e069a80eb3b4677314b4c0148119124a5a3633a3289f8c4940e8acc250e2ab25a50247bac99c6d7ed172dec9c443706- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast