cwi.nl

Observed 2026-07-15T05:53:46.066Z (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Registered withSURF B.V.

Also usesZoom

12 subdomains · tranco_5k

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

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

cwi.nl

A / AAAA

192.16.191.48

Cloudflareserves the site

dwalin.nikhef.nlns1.zurich.surf.netns2.cwi.nlns1.cwi.nl

nikhef.nl + surf.net + moreanswers its DNS

mx.soverin.net

soverin.netreceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.cwi.nl/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time833 ms

DNS resolutionNOERROR

Redirect chain

https://www.cwi.nl/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

192.16.191.48

MX 1

10mx.soverin.net

TXT 13

ZOOM_verify_-TwabqfPQI2RrsWzDjTwfQ
HARICA-SnDN4Irx82qOUXNni8S
MS=ms63043750
v=spf1 ip4:192.16.191.0/27 ip4:192.174.88.179 ip4:192.174.88.180 ip4:13.58.74.171 include:_spf.surfmailfilter.nl include:projects5.greenlightsolutions.nl include:spf.protection.outlook.com ~all
adobe-idp-site-verification=a8667c98581a66df82f18dd9b4ec9ad04d2b0214fda298afa04b69ae89b16b4d
Centrum Wiskunde & Informatica
CWI (Centrum Wiskunde & Informatica)=pnqgTeOiurzbz4yD
Science Park 123, 1098 XG Amsterdam, Netherlands
ZOOM_verify_QtFtKLPNUTBlqUfH6kXTNZ
apple-domain-verification=vKvt2VfbB2WZUhzQ

NS 4

dwalin.nikhef.nl
ns1.zurich.surf.net
ns2.cwi.nl
ns1.cwi.nl

SOA 1

ns1.cwi.nl hostmaster.cwi.nl

TLS Certificates (0)

None.

Subdomains (12)

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

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

Ed25519 Receipt

Receipt ID: 2b474bbc-aef3-45d9-ad04-24688059093e
Output Hash: 9f0c00680db0087ac1f6d2de00f86691c70046161f059e3355e2993e75526e73
Signature: ed25519:e633af1d9c9698f9602de2bb4eb2f283a21f61694c3e8fbc0182211ed72b60ccabf84073ffe9a3f0b85e3e8cf7b5586ddedfeb376c0b01dc00fec355ed2c020e
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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