coursera.org

Observed Jul 18, 2026, 12:01 UTC (16h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAmazon

Email byGoogle Workspace

Secured byAmazon

Also usesAtlassianDockerDocuSignFacebook/MetaGoogle Search ConsoleHubSpotMiroStripe

education

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

INFRASTRUCTURE MAPwhat coursera.org actually stands on - every host below is a signed observation

coursera.org

A / AAAA

3.170.3.283.170.3.623.170.3.913.170.3.13

Amazonserves the site

ns-1481.awsdns-57.orgns-1590.awsdns-06.co.ukns-258.awsdns-32.comns-688.awsdns-22.net

awsdns-57.org + awsdns-06.co.uk + moreanswers its DNS

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

Google Workspacereceives its email

TLS

coursera.org

Amazonissued its certificate

DNS Records

A 4

3.170.3.28
3.170.3.62
3.170.3.91
3.170.3.13

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 42

376174617-10056694
BthfBdp8W7Bqmm87eNGy
MS=ms91657421
anthropic-domain-verification-r913z0=qHfIpP1D8b5nWxj2rpstnqRZ1
apple-domain-verification=8gxy28dzSlSOYkUI
atlassian-domain-verification=OwoxnU5JeeEeNB3PXqTmPOsZNFUYTd05tar4PX8ZNNjps+mMWto+OyyA/50W5+B1
atlassian-domain-verification=pwnyCbGEmC6E08lYJGO/SYkQvbjFS+OXy03eVMG75U52Edj0vbZGBjdaorxh+PUE
canva-site-verification=m3eGQL4tz88BqXJO92JRpw
cisco-ci-domain-verification=5b418d2526e560d4ec96988886c86e7930c6936b68215183295356a4e4bf36d7
cursor-domain-verification-kg2va5=P61NAJ77jH4Kuavd9jaD3I4Bw

NS 4

ns-1481.awsdns-57.org
ns-1590.awsdns-06.co.uk
ns-258.awsdns-32.com
ns-688.awsdns-22.net

SOA 1

ns-1590.awsdns-06.co.uk awsdns-hostmaster.amazon.com

SRV 10

talk1.l.google.com:5222 p20
talk2.l.google.com:5222 p20
talk3.l.google.com:5222 p20
talk4.l.google.com:5222 p20
talk.l.google.com:5222 p5
alt1.xmpp-server.l.google.com:5269 p20
alt2.xmpp-server.l.google.com:5269 p20
alt3.xmpp-server.l.google.com:5269 p20
alt4.xmpp-server.l.google.com:5269 p20
xmpp-server.l.google.com:5269 p5

TLS Certificates (3)

Common Name	Issuer	Expires
`coursera.org`	C=US, O=Amazon, CN=Amazon RSA 2048 M01	Tue, 06 Oct 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 coursera.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 56a30a34-6a37-471d-8264-a4d8cbed2e6d
Output Hash: 57c34836e63bbcf3d1548101a58fc3c1551a39a29e7eb763ce52f35d07cb11cd
Signature: ed25519:2fca577938ab348d3179d3d7307b1b902296e7399d10f6afe282a7b489a8a70b17f7a3df7936a9a46d86964659214b07214c8ed979a51b971eb3c40ef98f2508
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/coursera.org