indexo.dev

kulter.nl

.nl crawl

First seen 2026-05-30 · Last seen 2026-05-30 · ok HTTP/1.1 200 286 ms crawled 2026-05-31

NL · 91.142.254.133 · AS20857 Signet B.V.

Reputation 62/100 wrong cert weak security headers no dmarc policy

Classifying

Technology

Server
nginx

DNS records live

NS
  • ns1.dn-s.nl
  • ns2.dn-s.nl
  • ns3.dn-s.nl
  • ns4.dn-s.nl
MX
  • 10 filter.premiumantispam.nl
  • 20 fallback.premiumantispam.nl

Email authentication weak

SPF
v=spf1 mx a ip4:91.205.35.248 a:webmail.hostingserver.nl ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current) wrong cert

Sectigo Public Server Authentication CA DV R36
from 2025-08-15 to 2026-08-16
Expires in 76 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://kulter.nl/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)