doctrine.it
Observed Jul 25, 2026, 04:17 UTC (7d 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 byGoogle Workspace
Secured byAmazon
Also usesGoogle Search Console
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat doctrine.it actually stands on - every host below is a signed observation
doctrine.it
A / AAAA
35.156.200.513.73.113.1453.64.231.73
unattributedserves the site
NS
ns-1302.awsdns-34.orgns-1652.awsdns-14.co.ukns-810.awsdns-37.netns-95.awsdns-11.com
awsdns-34.org + awsdns-14.co.uk + moreanswers 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
doctrine.it
Amazonissued its certificate
DNS Records
A 3
35.156.200.513.73.113.1453.64.231.73
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 4
google-site-verification=t08jrlieB_xvXeA6E07sy-5CsKnt9-wT61EBqNkISuggoogle-site-verification=wQLbohatlWg55YbSniaAZO2_sO18eITCjILtY-XrIyIv=spf1 include:_spf.doctrine.it -allv=DMARC1; p=quarantine; rua=mailto:dmarc-admin@doctrine.it; adkim=s; aspf=s
NS 4
ns-1302.awsdns-34.orgns-1652.awsdns-14.co.ukns-810.awsdns-37.netns-95.awsdns-11.com
SOA 1
ns-95.awsdns-11.com awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
doctrine.it |
C=US, O=Amazon, CN=Amazon RSA 2048 M01 | Wed, 13 Jan 2027 23:59:59 +0000 |
Amazon RSA 2048 M01 |
C=US, O=Amazon, CN=Amazon Root CA 1 | Fri, 23 Aug 2030 22:21:28 +0000 |
Amazon Root CA 1 |
C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2 | Thu, 31 Dec 2037 01:00:00 +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_728721169497884f- Output Hash
dd9455dc0839aba502d45e3805b0031bb20429d69b235fe9b4447cc02754dec0- Signature
ed25519:2b8d7a95d07a4a6e6e747322a1b3c6c103a692503d09082fdddb540b8ef4814071b281a3442aef8c0ece2ddd15aa30bbc2c90231fac5c5ebfe735c1361850e09- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast