404co.nl

.nl crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 462 ms crawled 2026-06-01

NL · 95.170.85.99 · AS20857 Signet B.V.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: 404 collective | Digitale ervaringen die indruk maken
Description: 404 collective is een creatief digitaal bureau dat memorabele webdesign, strategische marketing en op maat gemaakte technologie levert. Ontdek onze diensten.
Language: nl
Canonical: https://404co.nl/

Open Graph

url: https://404co.nl/
title: 404 collective | Digitale ervaringen die indruk maken
locale: nl_NL
site name: 404 collective
description: 404 collective is een creatief digitaal bureau dat memorabele webdesign, strategische marketing en op maat gemaakte technologie levert. Ontdek onze diensten.

Technology

Server: nginx

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (4)

jykvzunsqcmkmovbkued.supabase.co×46
fonts.googleapis.com×2
fonts.gstatic.com×2
www.googletagmanager.com×1

Social

Contact

Email

Phone

0502340433

Address

Groningen, NL

DNS records live

NS

ns0.transip.net
ns1.transip.nl
ns2.transip.eu

MX

0 404co-nl.mail.protection.outlook.com

Verified for

Google
Microsoft 365

Email authentication partial

SPF: v=spf1 include:spf.protection.outlook.com include:_spf.transip.email ~all
softfail (~all)
DMARC: v=DMARC1; p=none;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-04 to 2026-07-03

Expires in 29 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://404co.nl/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy
permissions-policy

findings

CSP allows unsafe inline scripts/styles
CSP uses wildcard sources

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: DENY
permissions-policy: camera=(), microphone=(), geolocation=()
x-content-type-options: nosniff
content-security-policy: default-src 'self'; script-src 'self' 'unsafe-inline' https://www.googletagmanager.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com data:; img-src 'self' data: https: blob:; connect-src 'self' https://*.supabase.co https://www.google-analytics.com https://*.google-analytics.com https://*.analytics.google.com; frame-src https://open.spotify.com; frame-ancestors 'none'
strict-transport-security: max-age=31536000; includeSubDomains