surf.nl

Observed Jul 24, 2026, 01:26 UTC (8h 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 toSURF B.V

Registered withSURF B.V.

Also usesGoogle Search Console

IPv6 · 1 subdomain · tranco_100k

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

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

surf.nl

A / AAAA

192.87.108.152001:610:508:108:192:87:108:15

SURF B.Vserves the site

ns1.zurich.surf.netns1.surfnet.nlns2.surfnet.nlns3.surfnet.nl

surf.net + surfnet.nlanswers its DNS

surf-nl.mail.protection.outlook.com

Microsoft 365receives its email

TLS

surf.nl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

192.87.108.15

AAAA 1

2001:610:508:108:192:87:108:15

MX 1

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

TXT 12

MS=ms58073161
HARICA-TbKrfKhF6FZRm1uAgOJ
apple-domain-verification=g7uZuYdCUCKUQJEh
bw=vBRo1av7Hlff58uTo8JYIGGG1dVp67IqBa9Et9JaLpnr
mentimeter-5e1dbed6-22e8-40bb-983d-cfb0d2f07fcd
google-site-verification=eBmfmfF08EHY7J6CNUWO3k_iKc1hisioiNIYDZ7l3nc
4KpnMi9KFXJveaqCcl7taNkGhTxHDB0ITMkEidiOEJa5vdx2+L/on3nrIAGKkvhZ8dnPomZoqaZK3Dhp+a9Ilg==
LwdgkMB+IUPOT7+0YXpUA6xInAPm/QkgJGuSci6msn1oZh76zdu2DuXkol9DSKQ4S50VZhZAxZvfRqwpaD7pCw==
adobe-idp-site-verification=bb247cf6e0162a264df1886109d59464c0de78dd3f1e04091bca1c4bf93d10cd
v=spf1 include:mailplus.nl include:soverin.net include:spf.protection.outlook.com include:spf.surf.nl include:mail.zendesk.com ~all

NS 4

ns1.zurich.surf.net
ns1.surfnet.nl
ns2.surfnet.nl
ns3.surfnet.nl

SOA 1

ns1.surfnet.nl dns-beheer.surf.nl

CAA 3

issue "harica.gr"
issue "letsencrypt.org"
issue "sectigo.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`surf.nl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS ECC 1	Sat, 06 Feb 2027 13:20:45 +0000
`GEANT TLS ECC 1`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS ECC Root CA 2021	Sat, 31 Dec 2039 11:14:20 +0000
`HARICA TLS ECC Root CA 2021`	C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions ECC RootCA 2015	Fri, 31 Aug 2029 07:44:36 +0000

Subdomains (1)

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

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

Ed25519 Receipt

Receipt ID: rcpt_1c39606a74b3b4ab
Output Hash: 2a25dc4e629534cb5ce39239ac6c1d52ebe1f73f7ce33f880ea5040ca4a6f41a
Signature: ed25519:a9d27f4ef14cba9f414c12b31062370304fe4011d82d60dd1cf234431c1d7b43160295262c21efd4523344facc9fa230ad1fbdce528c4d3b7b302fff0e4d860e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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