indexo.dev

hydrotheek.nl

.nl crawl

First seen 2026-05-27 · Last seen 2026-05-27 · ok HTTP/1.1 200 1053 ms crawled 2026-05-30

NL · 137.224.205.81 · AS1103 SURF B.V.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Hydrotheek

Open Graph

title
Hydrotheek
locale
nl_NL

Technology

Third-party hosts loaded (1)

  • api.groenkennisnet.nl×2

DNS records live

NS
  • ns-ext-01.wur.nl
  • ns1.surfnet.nl
  • ns1.zurich.surf.net
MX
  • 50 hydrotheek-nl.mail.protection.outlook.com
Verified for
  • HARICA
  • Microsoft 365

Email authentication weak

SPF
v=spf1 include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

GEANT TLS RSA 1
from 2026-03-24 to 2026-10-09
Expires in 130 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://hydrotheek.nl/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000; includeSubDomains

Linked from (1)