oefenblaadjes.nl

HTML metadata

Technology

Server

nginx

Analytics

• Google Tag Manager

Ads

• Google AdSense

Third-party hosts loaded (3)

• cdn.jsdelivr.net×1
• pagead2.googlesyndication.com×1
• www.googletagmanager.com×1

Registration

Registrar

mijn.host

Created

2017-01-17

Updated

2025-11-30

Name servers

• ns1.mijn.host
• ns2.mijn.host
• ns3.mijn.host

DNS records live

NS

• ns1.mijn.host
• ns2.mijn.host
• ns3.mijn.host

MX

• 10 mail.oefenblaadjes.nl

Email authentication strong

SPF

v=spf1 a mx include:spf.mijn.host ~all

softfail (~all)

DMARC

v=DMARC1; p=quarantine; adkim=s; aspf=s; sp=none;

policy: quarantine · sp=none

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://oefenblaadjes.nl/

findings

• missing HSTS
• missing Content Security Policy
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

Links to (4)

• toetstrainernederland.nl×1
• leestrainer.nl×1
• html5up.net×1
• bol.com×1

Linked from (1)

• leestrainer.nl×1