duofederal.com
Observed Jul 27, 2026, 22:27 UTC (3d 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 duofederal.com actually stands on - every host below is a signed observation
duofederal.com
A / AAAA
52.85.193.852.85.193.6152.85.193.9052.85.193.107
unattributedserves the site
NS
ns-79.awsdns-09.comns-678.awsdns-20.netns-1369.awsdns-43.orgns-1571.awsdns-04.co.uk
awsdns-09.com + awsdns-20.net + moreanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
www.duofederal.com
Amazonissued its certificate
DNS Records
A 4
52.85.193.852.85.193.6152.85.193.9052.85.193.107
MX 5
1aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com
TXT 4
_3h4qvryzw0y8ovl0u8j7xlr41v6q4y3v=spf1 include:amazonses.com ~allgoogle-site-verification=invMu5URB_g3ALFHJF20U4kiTtdYBBHRsylBJYwZHOkv=DMARC1; p=reject; rua=mailto:thknwdkw@ag.dmarcian.com;
NS 4
ns-79.awsdns-09.comns-678.awsdns-20.netns-1369.awsdns-43.orgns-1571.awsdns-04.co.uk
SOA 1
ns-79.awsdns-09.com awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.duofederal.com |
C=US, O=Amazon, CN=Amazon RSA 2048 M04 | Sun, 17 Jan 2027 23:59:59 +0000 |
Amazon RSA 2048 M04 |
C=US, O=Amazon, CN=Amazon Root CA 1 | Fri, 23 Aug 2030 22:26:35 +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_2df823c205e49479- Output Hash
cd49b1cb0763cdda353365d791eb89d354f59f51b4730f6bd620bd0dcdf7d943- Signature
ed25519:891490fa088e01e677773d5334feab1ed3a0710ed9859b541c285460795beedae9e452902f12cb1fd38c27c783112e1e5b0476012b4e09012893b321f3643e04- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast