indexo.dev

erikvalk.nl

.nl crawl

First seen 2026-06-04 · Last seen 2026-06-04 · ok HTTP/1.1 200 193 ms crawled 2026-06-04

NL · 83.96.176.80 · AS31586 Signet B.V.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Erik Valk Exacte Vakken

Technology

Server
nginx

Registration

Registrar
Internationale Domeinregistratie Nederland
Created
2006-10-12
Updated
2021-05-19
Name servers
  • ns3.dds.amsterdam
  • ns2.dds.eu
  • ns1.dds.nl

DNS records live

NS
  • ns1.dds.nl
  • ns2.dds.eu
  • ns3.dds.amsterdam
MX
  • 100 forward1.dds.nl
  • 100 forward2.dds.nl
  • 50 smtpwriter.dds.nl

Email authentication weak

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

Certificate (current)

R12
from 2026-04-26 to 2026-07-25
Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Linked from (1)