hu.nl

Observed Aug 11, 2026, 05:54 UTC (20h 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 byHellenic Academic and Research Institutions CA

Also usesGoogle Search Console

19 subdomains · tranco_100k

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

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

hu.nl

A / AAAA

20.50.2.17

unattributedserves the site

ns2.hvu.nlns2.surfnet.nlwatson.hvu.nl

hvu.nl + surfnet.nlanswers its DNS

hu-nl.mail.protection.outlook.com

Microsoft 365receives its email

TLS

werkenstudie.hu.nl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

20.50.2.17

MX 1

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

TXT 13

adobe-idp-site-verification=c56a3694a2b32457d490c96dac92cd9b11c33917547fadbe31bd47834229bcad
apple-domain-verification=vIuTEzNtfsu46TxH
Sendinblue-code:deca8439cf3860647ffc3a8297786cc1
google-site-verification=aZzOk4BTEfdJQlwC0FJzEFncQ6ay6GfPNVtLDTm4ckE
DomainVerification=GR6CYDSL86WNBCI8EZG3Q6GEDGTGIXSWXKVCTQ1NW85VL2C6K3FLF41JCSNN0UUH
HARICA-FbxMHpAzSkfWNruudSR
autodesk-domain-verification=J-zyK8uSVt4qcWGNsup2
e+1K6MxrUG3sJiyFlv6E3tpd1GZo44JCwMMc4elyM8PQErpc7Izq2ZFPyZZde6XMGNuJT1wfQqSk506FYTaD5w==
MS=ms31644939
v=spf1 include:spf.hu.nl.eu-3m7rf0o1.e1.dspf.app include:spf.protection.outlook.com -all

NS 3

ns2.hvu.nl
ns2.surfnet.nl
watson.hvu.nl

SOA 1

watson.hvu.nl hostmaster.hu.nl

SRV 1

xmpp.lync.hu.nl:5269 p0

DMARC_RECORDS 1

v=DMARC1; p=reject; rua=mailto:3m7rf0o1@ag.eu.dmarcadvisor.com

TLS Certificates (3)

Common Name	Issuer	Expires
`werkenstudie.hu.nl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Thu, 17 Dec 2026 13:59:01 +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 (19)

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.

Verify this receipt

Ed25519 Receipt

Receipt ID: rcpt_fbe45eed4c122ef1
Output Hash: cc02a32f6f8529d500cce418c09b8f3e27276815e6671c752d66eeef5ca738eb
Signature: ed25519:feb2760ff196de0d3cbf7d8070257f76068f0c36a722760c78ff9f65c84aee145405a9e983828dab14e71d3792cc20d3e432ee3ad296057ba079b16676e5d400
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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