matthaei.de

Observed Aug 11, 2026, 12:45 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of matthaei.de was taken 4d ago

matthaei.de is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting matthaei.de under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch matthaei.de Watching a domain needs a DRM3 account. The reading above stays free and public either way.

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Up right now

Email byMicrosoft 365

Secured byDeutsche Telekom Security GmbH

Also usesAtlassianDocuSignTeleSec (Deutsche Telekom)Apple

tranco

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

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

matthaei.de

A / AAAA

168.119.26.57

unattributedserves the site

ns1040.ui-dns.comns1040.ui-dns.orgns1040.ui-dns.dens1040.ui-dns.biz

ui-dns.com + ui-dns.org + moreanswers its DNS

matthaei-de.mail.protection.outlook.com

Microsoft 365receives its email

TLS

*.matthaei.de

Deutsche Telekom Security GmbHissued its certificate

DNS Records

A 1

168.119.26.57

MX 1

10matthaei-de.mail.protection.outlook.com

TXT 6

fKlKwB36TP3wCSDL6L8pgUizNwm4KnSgVadEqLspU+yBDHsoTcTmyo9EWTeNknyEjC7APkTrX9HcYNWbEC4y+w==
atlassian-domain-verification=kKiC8chzr6tFyr2LeH/HLF0SZ7gViUsvydrOnjLZH4Z9FjgmRKgab8CZX3BPu0XT
v=spf1 a:mail.matthaei.de ip4:195.243.197.132 ip4:195.243.197.142 include:_spf-eu.ionos.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
docusign=029539c5-85c3-4e6b-b831-7468768d8cf4
_telesec-domain-validation=362370_2026-07-22_OFSZWe3DjmGqzRUAmPSj223hTvQJV2nD2cjbjbJnLzVYwpjN7x
apple-domain-verification=PNnnxzHaACImMmeQ

NS 4

ns1040.ui-dns.com
ns1040.ui-dns.org
ns1040.ui-dns.de
ns1040.ui-dns.biz

SOA 1

ns1040.ui-dns.de hostmaster.1und1.de

DMARC_RECORDS 1

v=DMARC1; p=quarantine; rua=mailto:it@matthaei.de; ruf=mailto:it@matthaei.de;

TLS Certificates (3)

Common Name	Issuer	Expires
`*.matthaei.de`	C=DE, O=Deutsche Telekom Security GmbH, 2.5.4.97=NTRDE-DER3201.HRB15241, CN=Telekom Security OV RSA CA 26A	Thu, 04 Feb 2027 23:59:59 +0000
`Telekom Security OV RSA CA 26A`	C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security TLS RSA Root 2023	Sun, 18 Mar 2029 23:59:59 +0000
`Telekom Security TLS RSA Root 2023`	C=DE, O=T-Systems Enterprise Services GmbH, 2.5.4.11=T-Systems Trust Center, CN=T-TeleSec GlobalRoot Class 3	Fri, 30 Sep 2033 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; the only network request the check makes is for the published public keys.

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Ed25519 Receipt

Receipt ID: rcpt_05400bafdfc8e18a
Output Hash: bcbddc5cd3d429721f3662c3f964fb1fdab12fac688155ff1444a5b0902a0a43
Signature: ed25519:48bcf6d74a560dcfd59908943220a5e6fd18bafd7293026172013e08fd2a6bca0f5a5698b4625bedbba8f27ff3baae1fc2adb5d7d48a75a2b3972ba4fcac8706
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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