tudelft.nl

Observed Jul 21, 2026, 19:37 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

Runs onSURF B.V

Email byMicrosoft 365

Secured byHellenic Academic and Research Institutions CA

Registered withTechnische Universiteit Delft

Also usesMiroGoogle Search ConsoleFigma

push_legacy

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

INFRASTRUCTURE MAPwhat tudelft.nl actually stands on - every host below is a signed observation

tudelft.nl

A / AAAA

130.161.128.82

SURF B.Vserves the site

ns1.zurich.surf.netns1.surfnet.nlns1.tudelft.nlns2.surfnet.nl+1 more

surf.net + surfnet.nl + moreanswers its DNS

tudelft-nl.mail.protection.outlook.com

Microsoft 365receives its email

TLS

tudelft.nl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

130.161.128.82

MX 1

10tudelft-nl.mail.protection.outlook.com

TXT 21

MS=ms66592311
HARICA-9s6oKKJ124kmU6v3f6A
HARICA-aXJ2Kuvqc5hU8cVsyIR
HARICA-svOKy8ChPYfvbMCCCgv
EYCG94TF05LGAIXGKNS3B4SXZ796W7SPSHUPP1E3M
apple-domain-verification=TWilLuVqEqmPHPlP
jamf-site-verification=Ddcd23-bTSJECc10j2URmw
sendinblue-code:ef5755c78c2226424706a65a2413f0a1
amazonses:iyPCyEjMv6YpdMhVuagmzM+6PIiSZt+kj9J0DnmImnQ=
miro-verification=034228b8046d801ff6579bb93100816ce0fac54f

NS 5

ns1.zurich.surf.net
ns1.surfnet.nl
ns1.tudelft.nl
ns2.surfnet.nl
ns2.tudelft.nl

SOA 1

ns1.tudelft.nl hostmaster.tudelft.nl

SRV 1

xmpp.tudelft.nl:5269 p0

CAA 12

iodef "mailto:abuse@tudelft.nl"
issue "amazon.com"
issue "amazonaws.com"
issue "amazontrust.com"
issue "awstrust.com"
issue "harica.gr"
issue "letsencrypt.org"
issue "pki.goog"
issue "sectigo.com"
issue "www.digicert.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`tudelft.nl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Fri, 23 Oct 2026 20:20:20 +0000
`GEANT TLS RSA 1`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021	Sat, 31 Dec 2039 11:14:59 +0000
`HARICA TLS RSA Root CA 2021`	C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015	Fri, 31 Aug 2029 07:41:54 +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 tudelft.nl. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_1598e7598794424c
Output Hash: 346a7295991e575684e6b7c050002028d53f2cd0a15a5b03582ba23fd7c14691
Signature: ed25519:4256170e28d1fb94df68edb0da9d84cd40a9f87867a76acd4e283a9efc2b2f927b4a509183fa086573a50d9a198bb1edbd4fb013aa8dfa2b73aa3b1ead423c0b
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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