dualopen.com

Observed Jul 21, 2026, 16:34 UTC (2d 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

Up right now

Runs onHangzhou Alibaba Advertising

Secured byLet's Encrypt

Registered withAlibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

tranco_100k

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

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

dualopen.com

A / AAAA

120.26.53.190

Hangzhou Alibaba Advertisingserves the site

f1g1ns1.dnspod.netf1g1ns2.dnspod.net

dnspod.netanswers its DNS

TLS

dualopen.com

Let's Encryptissued its certificate

DNS Records

A 1

120.26.53.190

NS 2

f1g1ns1.dnspod.net
f1g1ns2.dnspod.net

SOA 1

f1g1ns1.dnspod.net freednsadmin.dnspod.com

TLS Certificates (3)

Common Name	Issuer	Expires
`dualopen.com`	C=US, O=Let's Encrypt, CN=YR2	Sun, 18 Oct 2026 12:48:29 +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; nothing leaves your machine.

Verify this receipt

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

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

Ed25519 Receipt

Receipt ID: rcpt_3a1c8e4b632cbc6e
Output Hash: 0bb0751ef40aac8c831001f10879daa2efeb984958b450d1284c1f932cc95291
Signature: ed25519:80f32a31e1f17f6ff69fd97a2fc51c93d9c78f4a6d3886a0fb4fab045cbe2078d7c78dfe84c475932f48f79103dee0d0f9b47fd0d03648bc40c2222f4de7e50c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/dualopen.com