deltafiber.nl — domain check, WHOIS, DNS & reputation

HTML metadata

Title: DELTA Fiber | DELTA Fiber
Description: Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet.
Language: nl-NL

Open Graph

url: https://www.deltafiber.nl/
title: DELTA Fiber
description: Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet.

Technology

CDN: Cloudflare

Analytics

Cloudflare Insights

Cookie consent

Cookiebot

Third-party hosts loaded (3)

cdnjs.cloudflare.com×1
consent.cookiebot.com×1
static.cloudflareinsights.com×1

DNS records live

NS

ns1.dfn.nl
ns2.dfn.nl

MX

0 deltafiber-nl.mail.protection.outlook.com

TXT

freepik-domain-verification=9b8434809ec7a016e2d8ddd7c751bc07
autodesk-domain-verification=4wWGSmVwPYipksyEEUem
53114c68-a484-467e-ae06-f8310dd06191

Verified for

Anthropic
Apple
Canva
DocuSign
Google
Google Workspace
Meta
Microsoft 365
Miro
OpenAI

Email authentication strong

SPF

v=spf1 include:spf.protection.outlook.com ip4:87.233.41.63 ip4:212.115.194.26 ip4:62.45.45.125 ip4:62.45.45.126 ip4:62.45.70.132 ip4:62.45.70.132 ip4:20.61.145.119 a:relay.smartlockr.eu include:_spf.mijnwefact.nl include:servers.mcsv.net include:spf.afas.online include:spf.mailjet.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; fo=1; rua=mailto:rua@deltafiber.nl; ruf=mailto:ruf@deltafiber.nl

policy: quarantine

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxEeiAACMRdvyIOs1LjcfXPhWbdnoTLWubLZv9VSBg8QdkkR/07CtUMsyGWweSB7lXqdxXAjQmOV8Hz…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApB+wkCSfPqe9YHrmrhl6DIoBBogr0a5FWTnScYXplVnoAobNanl8ldeM0YlDkAW7UjlfNx6ljPwNOj…
k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…

selectors probed

Certificate (current)

WE1

from 2026-04-15 to 2026-07-14

Expires in 33 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.deltafiber.nl

present

strict-transport-security
x-frame-options
x-content-type-options

findings

missing Content Security Policy
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
strict-transport-security: max-age=31536000; includeSubDomains

Links to (2)

deltanetwerk.nl×1
delta.nl×1

Use this data via API

Everything on this page for deltafiber.nl is available as JSON from the indexo.dev REST & MCP API.

curl "https://indexo.dev/api/v1/domains/deltafiber.nl" \
  -H "X-API-Key: idx_..."

Read the docs & get a free key →