indexo.dev

opmeerisolatie.nl

.nl crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 223 ms crawled 2026-06-01

NL · 31.7.7.79 · AS20847 Previder B.V.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Home - Opmeer Isolatie
Language
nl
Canonical
https://www.opmeerisolatie.nl/

Open Graph

title
Home
updated time
1756797344

Technology

Server
Apache

Contact

Email

DNS records live

NS
  • ns0.transip.net
  • ns1.transip.nl
  • ns2.transip.eu
MX
  • 10 opmeerisolatie.nl
  • 20 relay.transip.nl
Verified for
  • Microsoft 365

Email authentication weak

SPF
v=spf1 mx -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-25 to 2026-07-24
Expires in 52 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.opmeerisolatie.nl/

present
  • strict-transport-security
  • x-content-type-options
  • referrer-policy
findings
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-content-type-options
nosniff
strict-transport-security
max-age=31536000

Links to (1)

Linked from (1)