duolingo.com

Observed 2026-07-17T12:14:31.528388960+00:00 (35m ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAmazon

Email byGoogle Workspace

Secured byAmazon

Registered withAmazon Registrar, Inc.

Also usesDockerGoogle Search ConsoleSlackStripe

education

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

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

duolingo.com

A / AAAA

13.219.12.110100.50.95.15652.203.56.115

Amazonserves the site

ns-1020.awsdns-63.netns-1117.awsdns-11.orgns-1904.awsdns-46.co.ukns-247.awsdns-30.com

awsdns-63.net + awsdns-11.org + moreanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+3 more

Google Workspacereceives its email

TLS

duolingo.com

Amazonissued its certificate

DNS Records

A 3

13.219.12.110
100.50.95.156
52.203.56.115

MX 7

10aspmx.l.google.com
20alt1.aspmx.l.google.com
20alt2.aspmx.l.google.com
30aspmx2.googlemail.com
30aspmx3.googlemail.com
30aspmx4.googlemail.com
30aspmx5.googlemail.com

TXT 25

MS=ms66530579
_vg2bua41v8x489g1y55hg3hr4h3qmj0
aliyun-site-verification=1acfc148-50be-45c8-a021-3c933fc8eff9
amazonses:+SIz2NZPqYri3C+PSIyKShZIbuI4rNpbLlES7lmvpu4=
anthropic-domain-verification-z4335b=YssTBALPY7K784Sri4FjVHjd3
apple-domain-verification=bMPI889zOgALUenN
atlassian-sending-domain-verification=423a5faf-1cfa-4704-a38a-f7adae302dd6
docker-verification=b4ead4c5-fd66-42a5-a684-8f2e7f4c1417
e622flctk14s3cs3ccdauh8uth
google-site-verification=975UaH3lkKONB88HjWDDg34p8cdCqyTVSq_KGBAXrmU

NS 4

ns-1020.awsdns-63.net
ns-1117.awsdns-11.org
ns-1904.awsdns-46.co.uk
ns-247.awsdns-30.com

SOA 1

ns-1020.awsdns-63.net awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`duolingo.com`	C=US, O=Amazon, CN=Amazon RSA 2048 M01	Thu, 24 Dec 2026 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 (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.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 1d33bc07-9c56-4ff1-8a0f-edf073edf66e
Output Hash: f4679d0bcbb49a58d549edae5773b85fe790df33cd023cb35c42406acecef06f
Signature: ed25519:312cd06cc758221772f0a4a586c57a9499c5401f3ff3ae7ea472b47f61a0bbb2c87505bbc082cdb1a811c4acc8e066d6bc9a2f4c62478a801a8a0f5a7f54190e
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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