wdezwijger.nl

.nl crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 533 ms crawled 2026-05-30

NL · 31.7.7.79 · AS20847 Previder B.V.

Reputation 100/100

Classifying

HTML metadata

Title: Home - Willem de Zwijger College
Language: nl
Canonical: https://www.wdezwijger.nl/

Open Graph

title: Home
updated time: 1779956885

Technology

Server: Apache

Social

Contact

Phone

DNS records live

NS

ns1.sqr.nl
ns2.sqr.domains
ns3.sqr.cloud

MX

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

Verified for

Microsoft 365

Email authentication strong

SPF

v=spf1 include:_spf.google.com include:email.freshdesk.com include:amazonses.com include:_spf.transip.email ip4:77.242.118.2/28 include:_spf.yoursite.io include:spf.hosting.nl include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=reject;

policy: reject (enforced)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjyuBTSJg7pU463lUVD2Vhcj7SjyCMphQXhYxnFZIAHuFJQn+4HRWOzo2YS9NKalvoatPGR+K6tRatn…
selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwQwq/c3vqkf1oqox7jkkwKAW2Y7eJK/Coh90Td4ab1Iso1SnNGAJ8kk43k7XbZjCPrLctpMY1Jr320…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx+exNAafUKW1L/Sx/S2gdTgSLKY0by2aNajsBUxeTav/xXW/eLL4AaWhoW4lzIblPQ7YhBV5pVnWw+…

selectors probed

Certificate (current)

R13

from 2026-04-16 to 2026-07-15

Expires in 45 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.wdezwijger.nl/

present

strict-transport-security
x-content-type-options
referrer-policy

findings

missing Content Security Policy
missing frame protection
missing Permissions Policy

Header values

referrer-policy: same-origin
x-content-type-options: nosniff
strict-transport-security: max-age=31536000

Links to (6)

Linked from (1)

serverion.com×1