duolingo.cn

Observed Jul 22, 2026, 00:32 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 byGoDaddy.com

tranco_20k

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

INFRASTRUCTURE MAPwhat duolingo.cn actually stands on - every host below is a signed observation

duolingo.cn

A / AAAA

110.75.170.67

Hangzhou Alibaba Advertisingserves the site

vip4.alidns.comvip3.alidns.com

alidns.comanswers its DNS

TLS

*.duolingo.cn

GoDaddy.comissued its certificate

DNS Records

A 1

110.75.170.67

TXT 1

j7n6dkd42nqa7m26adfm6hojgp

CNAME 1

1sru0i2f6syq309n.aliyunddos1001.com

NS 2

vip4.alidns.com
vip3.alidns.com

SOA 1

vip3.alidns.com hostmaster.hichina.com

TLS Certificates (3)

Common Name	Issuer	Expires
`*.duolingo.cn`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., 2.5.4.11=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2	Fri, 20 Nov 2026 10:17:59 +0000
`Go Daddy Secure Certificate Authority - G2`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., CN=Go Daddy Root Certificate Authority - G2	Sat, 03 May 2031 07:00:00 +0000
`Go Daddy Root Certificate Authority - G2`	C=US, ST=Arizona, L=Scottsdale, O=GoDaddy.com, Inc., CN=Go Daddy Root Certificate Authority - G2	Thu, 31 Dec 2037 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 duolingo.cn. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_95743612301461f5
Output Hash: 9ac8119bc10e600324a6cef9b6441e4a9d6b452fe6f8cfe6b3e396414d331454
Signature: ed25519:e33d4cb3bba8d4bbeb7beba850396292339a39851fd3a2d43e55077d3de97936cf6293837596805054d7c582d5b9419ff1a8e7ee71c86382dc300901f1a93d07
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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