indexo.dev

jaapboonstra.nl

.nl crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 1116 ms crawled 2026-06-01

NL · 141.138.201.207 · AS20857 Signet B.V.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Jaap BoonstraJaap Boonstra | Jaap Boonstra
Description
Jaap Boonstra
Language
nl-NL
Generator
All in One SEO (AIOSEO) 4.9.3
Canonical
https://www.jaapboonstra.nl/
Translations
  • en
  • nl

Open Graph

url
https://www.jaapboonstra.nl/
title
Jaap Boonstra | Jaap Boonstra
locale
nl_NL
site name
Jaap Boonstra | Inspiraties, publicaties en presentaties voor leiders, verandermanagers, organisatieprofessionals en organsiatieadviseurs
description
Jaap Boonstra

Technology

Server
nginx
CMS
WordPress

Third-party hosts loaded (3)

  • my.aacsb.edu×1
  • www.esade.edu×1
  • www.nsob.nl×1

Social

DNS records live

NS
  • dns1.interip.nl
  • dns2.interip.nl
  • dns3.interip.net
MX
  • 0 mx.spamexperts.com
  • 10 fallbackmx.spamexperts.eu
  • 20 lastmx.spamexperts.net

Email authentication weak

SPF
v=spf1 include:spf.interip.nl include:_spf.transip.email ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-24 to 2026-06-22
Expires in 20 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
Header values
referrer-policy
no-referrer-when-downgrade
x-frame-options
SAMEORIGIN
permissions-policy
geolocation=*, midi=(), sync-xhr=(self "https://jaapboonstra.nl" "https://www.jaapboonstra.nl"), microphone=(), camera=(), magnetometer=(), gyroscope=(), payment=(), fullscreen=(self "https://jaapboonstra.nl" "https://www.jaapboonstra.nl" )
x-content-type-options
nosniff
content-security-policy
block-all-mixed-content
strict-transport-security
max-age=31536000

Links to (18)

Linked from (2)