indexo.dev

premiumantispam.nl

.nl dns

First seen 2026-05-11 · Last seen 2026-05-31 · ok HTTP/1.1 200 14287 ms crawled 2026-05-17

NL · 87.253.148.12 · AS20857 Signet B.V.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Premiumantispam.nl

Technology

Server
nginx

Third-party hosts loaded (1)

  • maxcdn.bootstrapcdn.com×1

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 a mx ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2026-05-07 to 2026-11-22
Expires in 174 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.premiumantispam.nl/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
default-src * 'self' data: 'unsafe-inline' 'unsafe-hashes' 'unsafe-eval'; frame-ancestors 'none'; form-action 'self'; base-uri 'self'
strict-transport-security
max-age=31536000;