DOMAINS CHANGES SERVICES CERTS API

duolingo.com

Observed 2026-06-15T08:06:47.880683234+00:00 (2h ago). Every field below was attested with an Ed25519 signature at scan time.

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Ed25519 Receipt

Receipt ID
ac9f0455-c49d-41e6-bede-6b2ec0c29c3d
Output Hash
b159f7a5295997556509cd81a4c6a2124554caf5068925f41bae3ffd10c89ee8
Signature
ed25519:76cd58c4327c0f7281d76907db97926329a74b47c92e55fa9c27e543c7054c0a3450d9b78d249271a5d695c5b10459918a634d9f590f61cc85792c45a835610f
Public Key
ed25519:d3f6015a95abdad7e8166ad80938a5885500170bb75f8cdb425b8fd2772bec29
Parent
(genesis)
Plane
fast
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DNS Records

A 3

  • 44.205.236.170
  • 52.202.78.27
  • 174.129.77.68

MX 7

  • {"priority":10,"exchange":"aspmx.l.google.com"}
  • {"priority":20,"exchange":"alt1.aspmx.l.google.com"}
  • {"priority":20,"exchange":"alt2.aspmx.l.google.com"}
  • {"priority":30,"exchange":"aspmx2.googlemail.com"}
  • {"priority":30,"exchange":"aspmx3.googlemail.com"}
  • {"priority":30,"exchange":"aspmx4.googlemail.com"}
  • {"priority":30,"exchange":"aspmx5.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

  • {"mname":"ns-1020.awsdns-63.net","rname":"awsdns-hostmaster.amazon.com","serial":1,"refresh":7200,"retry":900,"expire":1209600,"minimum":86400}

TLS Certificates (3)

Common NameIssuerExpires
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.