indexo.dev

headfirst.nl

.nl crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 4373 ms crawled 2026-05-18

DE · 18.198.76.236 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Wij matchen professionals met de beste opdrachten | HeadFirst
Description
Ontdek wat HeadFirst voor u kan betekenen. | ✅ Eén partner voor al uw inhuur | ✅ Grip op talent, kosten en risico’s
Language
nl
Canonical
https://www.headfirst.nl/

Open Graph

title
Wij matchen professionals met de beste opdrachten | HeadFirst
description
Ontdek wat HeadFirst voor u kan betekenen. | ✅ Eén partner voor al uw inhuur | ✅ Grip op talent, kosten en risico’s

Technology

Server
Apache
CMS
Next.js
Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

Contact

Email
Phone

Registration

Registrar
team.blue nl B.V.
Created
2000-01-20
Updated
2022-03-23
Name servers
  • ns2.transip.eu
  • ns0.transip.net
  • ns1.transip.nl

DNS records live

NS
  • ns0.transip.net
  • ns1.transip.nl
  • ns2.transip.eu
MX
  • 0 headfirst-nl.mail.protection.outlook.com
TXT
Show 7 TXT records
  • TdqGhJmH8sKxNByG8IS5dJWgW2F687h66bn21pb545ncuoopHWAbjCjnmva5WEEgD4C55HR9rAIsYLkeSqA9uQ==
  • QuoVadis=dab83e0a-c799-417d-8a77-40affc74278a
  • google-site-verification=5USfAzmQHrYXXiqF1mt2gAni91lC75UZ444AweYc7Fg
  • zscaler-verification-71918963-14012026-DC3Lmq
  • adobe-idp-site-verification=9a642c5f820678a7e677ba73206563e3b31c6401236ebbede426138dcc177c1a
  • openai-domain-verification=dv-MUlo8tzwenHUEHUfFuyajmYz
  • apple-domain-verification=RVquLSfdEyt1r7Ix

Email authentication strong

SPF
v=spf1 include:servers.mcsv.net include:26198844.spf05.hubspotemail.net include:spf.afas.online include:amazonses.com include:spf.protection.outlook.com include:emsd1.com include:mailswitch.nl include:carerix.net include:mail.zendesk.com include:scanners.headfirst.nl include:email.freshservice.com -all
strict (-all) · 11 DNS lookups (RFC limit is 10)
DMARC
v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:dmarc@headfirst.nl; adkim=r; aspf=r
policy: quarantine · sp=quarantine
DKIM
Show 4 DKIM selectors
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYJDPzUUqLlNuqlb663EX3kQvsyHUOy/tJNEW+VjItLX/sWAQbK4evTtW2FX6CxZBefG8pquxQmdXWhHyQ/R…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9Rmab9tugbFCyHyDTX6OYoIsZQT+BwSM9ohIuG04BL4ElHF8KypWyV5Pd84UO3BJJ2HsqA7fMvjt7s…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
  • mail: v=DKIM1;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0tMCjfIDk4Kc0A+IHJrL6tuWI/w7Rj/20swR8p7gWFRSQgMuoKQd2/VdDOXDv+ptDxpBqiG9pSFc30tfKZt0S2…
selectors probed

Certificate (current)

E8
from 2026-05-05 to 2026-08-03
Expires in 75 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://www.headfirst.nl/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • weak frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN, allow-from *
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self' https://headfirst.ddev.site https://headfirstnl-cms-staging.codebridge.nl https://headfirstnl-cms.codebridge.nl
strict-transport-security
max-age=31536000; includeSubDomains; preload

Linked from (1)