sidn.nl

Observed Jul 18, 2026, 12:26 UTC (9h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onGoogle

Email byMicrosoft 365

Secured byHellenic Academic and Research Institutions CA

Also usesGoogle Search Console

IPv6 · 1 subdomain · push_legacy

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

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

sidn.nl

A / AAAA

34.111.90.632600:1901:0:8ca2::

Googleserves the site

ns1.sidn.nlns2.sidn.nlns3.sidn.nl

sidn.nlanswers its DNS

sidn-nl.v-v1.mx.microsoft

Microsoft 365receives its email

TLS

sidn.nl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

34.111.90.63

AAAA 1

2600:1901:0:8ca2::

MX 1

0sidn-nl.v-v1.mx.microsoft

TXT 10

HARICA-VFdR5pRm5ZpLvvWrNmw
b49e83a3cf3f49b49be0ceea668e8457
apple-domain-verification=VfW6PNm8hVwB49dm
google-site-verification=UgJBr_GdHnW8WlMHFlo59LLMiNz0g-T3g6ijOs7KBWE
google-site-verification=nGdTpBOjSS2sHxxqhEE9Tj3xcK5X4-lF9YLqtYmXbwI
DomainVerification=94J3KBJIL96UFC6L3FMIHJ07M95PUUE5CZKNBBDKJOH2PYF1MQGVQRDA0ZIE58II
v=spf1 a:ops-relay03-p.sidn.nl a:ops-relay04-p.sidn.nl a:ops-relayf03-p.sidn.nl a:ops-relayf04-p.sidn.nl a:ops-monext02-p.sidn.nl ip4:94.198.154.51 include:spf.protection.outlook.com ~all
v=DMARC1; p=reject; rua=mailto:dmarc@sidn.nl,mailto:dmarc@sidn-nl.uriports.com; adkim=r; aspf=r; np=reject; psd=n; t=n; sp=reject
v=BIMI1; l=https://www.sidn.nl/assets/img/logo-bimi.svg; a=;
v=STSv1; id=20241021T111111Z;

NS 3

ns1.sidn.nl
ns2.sidn.nl
ns3.sidn.nl

SOA 1

ns3.sidn.nl hostmaster.sidn.nl

SRV 7

:0 p0
:0 p0
:0 p0
:0 p0
:0 p0
:0 p0
:0 p0

CAA 8

iodef "mailto:abuse@sidn.nl"
issue "digicert.com; cansignhttpexchanges=yes"
issue "harica.gr"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "quovadisglobal.com"
issue "sectigo.com"
issuemail "harica.gr"

TLS Certificates (3)

Common Name	Issuer	Expires
`sidn.nl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Fri, 06 Nov 2026 14:21:37 +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.sidn.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 sidn.nl. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: bce5113d-6d13-441e-8493-903cf052dd01
Output Hash: 27b2f3b604a9f7379d6631c13e2c38a79067bf3801f28091b1e031901fce2dd2
Signature: ed25519:6b261796231441c3677f1b099ad2b059a3c31e8402e31084b2eb02ac858cdd4eff078b2f2f18925f1d1b56be15cf8ab06642d4f88bcab56838485a0174a02800
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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