duo-tech.com

Observed Jul 28, 2026, 07:57 UTC (1d 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.

Verify this receipt yourself + Watch this domain

Not responding

Email byZoho Mail

Secured byLet's Encrypt

Also usesGoogle Search Console

majestic

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat duo-tech.com actually stands on - every host below is a signed observation

duo-tech.com

A / AAAA

157.173.120.134

unattributedserves the site

ns1.contabo.netns2.contabo.netns3.contabo.net

contabo.netanswers its DNS

mx3.zoho.eumx2.zoho.eumx.zoho.eu

Zoho Mailreceives its email

TLS

duo-tech.com

Let's Encryptissued its certificate

DNS Records

A 1

157.173.120.134

MX 3

50mx3.zoho.eu
20mx2.zoho.eu
10mx.zoho.eu

TXT 4

google-site-verification=ofNDvQinaWnf3p2LVyQ5sc4mmjx_yBHiKmxb6FOu6ic
v=spf1 include:zohomail.eu include:spf.mailjet.com include:_spf.google.com ~all
zoho-verification=zb97786214.zmverify.zoho.eu
v=DMARC1; p=quarantine; rua=mailto:hello@duo-tech.com; ruf=mailto:hello@duo-tech.com; sp=quarantine; adkim=r; aspf=r

NS 3

ns1.contabo.net
ns2.contabo.net
ns3.contabo.net

SOA 1

ns1.contabo.net hostmaster.contabo.de

TLS Certificates (3)

Common Name	Issuer	Expires
`duo-tech.com`	C=US, O=Let's Encrypt, CN=YR1	Mon, 31 Aug 2026 15:42:26 +0000
`YR1`	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; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for duo-tech.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/duo-tech.com">
  <img src="https://domaindrift.io/badge/duo-tech.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for duo-tech.com">
</a>

Ed25519 Receipt

Receipt ID: rcpt_9fd63dfca2b8c8db
Output Hash: f58353b5deb7eb767bf022843f7720cebc7a442c89841b6b52f5908f341cf4b9
Signature: ed25519:39d0e426df72b3e7f8a89eb6fd55f56fa6a2b0edb4a5c54f3ba06af3306b7689e77e7bd0b0549d9876fab7ad5903cc75c7aa354339ef41d3060085a3f818790f
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/duo-tech.com