ou.nl

Observed Jul 21, 2026, 16:54 UTC (3d 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

1 subdomain · tranco_100k

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

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

ou.nl

A / AAAA

145.20.124.148

unattributedserves the site

ns.ou.nldns.ou.nlns2.ou.nl

ou.nlanswers its DNS

ou-nl.mail.protection.outlook.comrelay.ou.nlmailserv2.ou.nl

Microsoft 365receives its email

TLS

ou.nl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

145.20.124.148

MX 3

0ou-nl.mail.protection.outlook.com
10relay.ou.nl
20mailserv2.ou.nl

TXT 11

MS=ms81132576
HARICA-LAjvqL7c0e5JATZCQL0
abuseipdb-verification=Cdp0Mzoj
MS=D9FA522DB0A593F330B3C81ADF4B4371B7C388CC
d365mktkey=jJ9sqCV2Xujx0xUicyyubd09sSMxyxS80b7VhwKsXKwx
ms-domain-verification=5bbde023-f788-4f59-aca9-0c3dc6fc1bd5
google-site-verification=qwghcgXEcQ7PDmgOKsNnVjEo2DD583UKdYAKoMUY_zg
4QRKLgYVvy3472d/Nsab+HVbraq0nLSoZxfpcc2GBDkVS0IGoDqn0swseCEEFa79EEuZ4fwRWRkcU9azjEOshw==
adobe-idp-site-verification=b509ce18e838a8e9b82da8dcdbb762a5b4322f2b736ec94ae9a5925e3ca9e37b
v=spf1 mx ip4:145.20.126.12/31 ip6:2001:610:338:1030::126:12/127 ip4:194.187.45.0/26 include:spf.protection.outlook.com -all

NS 3

ns.ou.nl
dns.ou.nl
ns2.ou.nl

SOA 1

dns.ou.nl postmaster.ou.nl

TLS Certificates (3)

Common Name	Issuer	Expires
`ou.nl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Sat, 31 Oct 2026 13:43:51 +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 (1)

www.ou.nl

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 ou.nl. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_640731a07b9b5232
Output Hash: ee2b4495ef2de61afcd27c3f9422324398ca3d46abe49be44311337e9d1f87b2
Signature: ed25519:041c2c58b7c5cb020f4dac57ad16b357197ace70424bfe75396e98c44253340f9f282b31b791b83c6afaa16ad2fc95378a4eaee06553c4d247fbcaea2e806302
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/ou.nl