studysmarter.de

Observed Jul 18, 2026, 13:55 UTC (9h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAmazon

Email byGoogle Workspace

Secured byAmazon

Also usesGoogle Search ConsoleStripe

tranco_40k

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

INFRASTRUCTURE MAPwhat studysmarter.de actually stands on - every host below is a signed observation

studysmarter.de

A / AAAA

3.73.169.303.125.74.873.122.11.142

Amazonserves the site

ns-1220.awsdns-24.orgns-1595.awsdns-07.co.ukns-398.awsdns-49.comns-564.awsdns-06.net

awsdns-24.org + awsdns-07.co.uk + moreanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

*.studysmarter.de

Amazonissued its certificate

DNS Records

A 3

3.73.169.30
3.125.74.87
3.122.11.142

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 8

MS=3F4B5344525FD843B8AF910D280AF308D9FC9C1A
detectify-verification=d8aa8923ee3948a69ca0ac304502489e
google-site-verification=khRwzQcgj3HuXJZUh9XvHXq_d8rA9wbHStL2MmQzX8Q
google-site-verification=mpMjtFqol1zTgIa8y8JR63xfihJId28TI3GnsBIq9Ek
google-site-verification=rXBh6MIyrCY8J8Uq_Xd_AA1NpryQkBaPk5G8dtSpuKQ
stripe-verification=6264a46b80a8dadd160716d09d034547ceb3f2cb5831760dc3e41d22c66986b8
v=spf1 a include:_spf.google.com include:sendgrid.net include:mail.zendesk.com ~all
v=DMARC1;p=reject;pct=100;rua=mailto:postmaster+dmarc@studysmarter.de;ruf=mailto:postmaster+dmarc@studysmarter.de;ri=86400;aspf=r;adkim=r;fo=1

NS 4

ns-1220.awsdns-24.org
ns-1595.awsdns-07.co.uk
ns-398.awsdns-49.com
ns-564.awsdns-06.net

SOA 1

ns-1220.awsdns-24.org awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`*.studysmarter.de`	C=US, O=Amazon, CN=Amazon RSA 2048 M04	Fri, 25 Sep 2026 23:59:59 +0000
`Amazon RSA 2048 M04`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:26:35 +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 studysmarter.de. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: c60815c8-2a67-410b-bf27-c17073ae74dc
Output Hash: 2ca9f5bb42997c144aecb369d310e5156fd26bda81a5daa8742ca066eb2cf8be
Signature: ed25519:10295ed52819736def7dbc51d6b9fd570d77c9d343736e5b76cfb4fe80c3e14474129dde5d7c7609775aeeff5d31de9ad4a606a683a2ca62e23e1a288760290c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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