fitbook.de

Observed Jul 21, 2026, 17:30 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

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

tranco_100k

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

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

fitbook.de

A / AAAA

13.248.163.21076.223.57.215

unattributedserves the site

ns21.netuse.dea6-66.akam.neta7-67.akam.neta1-130.akam.net+3 more

netuse.de + akam.netanswers its DNS

fitbook-de.mail.protection.outlook.com

Microsoft 365receives its email

TLS

fitbook.de

Let's Encryptissued its certificate

DNS Records

A 2

13.248.163.210
76.223.57.215

MX 1

0fitbook-de.mail.protection.outlook.com

TXT 5

MS=ms90228400
v=spf1 include:spf.asv.de include:spf.protection.outlook.com ?all
google-site-verification=_O7yBkhSaulBcgNr1FeXq-lNaBg0eh6LI7yMFjk_XsY
tollbit-domain-verification=931e970b3a1bc1545b3da6fbeec8c5d43d3e659f7003166db11eef4d83e7d006
v=DMARC1; p=reject; sp=none; rua=mailto:dmarc-rua@dkim10888.de; ruf=mailto:dmarc-ruf@dkim10888.de

NS 7

ns21.netuse.de
a6-66.akam.net
a7-67.akam.net
a1-130.akam.net
a11-67.akam.net
a14-64.akam.net
a16-65.akam.net

SOA 1

ns21.netuse.de hostmaster.netuse.de

TLS Certificates (4)

Common Name	Issuer	Expires
`fitbook.de`	C=US, O=Let's Encrypt, CN=YE1	Mon, 12 Oct 2026 04:51:21 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 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 fitbook.de. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_dfd10ca4025b8a8f
Output Hash: 79c3dd099cef1c4c37c79880ac5e9b929bb9c6986ebe478866cf5f03bb432d0f
Signature: ed25519:dbe0b85fac2a8c4c15d356aa307c479598d541c8e009ab87039f5ee0d53234207aab4fa4d8cdaad1534e6de1e15c34c84d218b0f5a4abb67ae445b8276078401
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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