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derko.nl

.nl ok HTTP/1.1 200 498 ms

First seen 2026-06-15 · Last seen 2026-06-15 · crawled 2026-06-15

NL · 31.7.7.79 · AS20847 Previder B.V.

Reputation 100/100

Classifying

HTML metadata

Title
Home - Derko Installatietechniek
Description
Jouw duurzame partner binnen de installatietechniek
Language
nl
Canonical
https://www.derko.nl/

Open Graph

title
Home
description
Jouw duurzame partner binnen de installatietechniek
updated time
1781165094

Contact

Technology

Server
Apache

Social

DNS records live

NS
  • gina.ns.cloudflare.com
  • phil.ns.cloudflare.com
MX
  • 0 derko-nl.mail.protection.outlook.com
TXT
  • _4nscw3ncreadyxbdgiyli62byxgf5a2
  • _nw7arhvf0h8p71woev5vvd56hvyx7b3

Email authentication strong

SPF
v=spf1 a mx include:sendgrid.net include:spf.protection.outlook.com ip4:84.35.63.97 include:_spf.yoursite.io ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine;
policy: quarantine
DKIM
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0uy/lfMyXE1gyTEPYmzOQO3xlQRyf3LuxpMskmwKav3yHbfM0i2PBwq1k3i2QG2s81Ku3WYorMyUTlj2fj…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbD/k7rJc7G3V0KyoWa8uWS/Ska4uk15NqMHK94GhRlc15XqlNGiuOrZ4s2i5qdbXr1oXtIr3fQxWaq1ERWU9Ghk…
selectors probed

Certificate (current)

R13
from 2026-05-07 to 2026-08-05
Expires in 46 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.derko.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 (5)

Linked from (1)

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