firstconcepts.nl

HTML metadata

Title

First Concepts - Maatwerksystemen die gewoon kloppen

Description

First Concepts ontwikkelt maatwerk webapplicaties en portals die processen versimpelen, teams versnellen en data betrouwbaar maken. Van MVP tot doorontwikkeling en beheer.

Language

nl

Open Graph

title

First Concepts - Maatwerksystemen die gewoon kloppen

description

First Concepts ontwikkelt maatwerk webapplicaties en portals die processen versimpelen, teams versnellen en data betrouwbaar maken.

Technology

CDN

Netlify

CMS

Gatsby

Registration

Registrar

mijn.host

Created

2021-02-02

Updated

2026-01-17

Name servers

• dns1.p08.nsone.net
• dns2.p08.nsone.net
• dns3.p08.nsone.net
• dns4.p08.nsone.net

DNS records live

NS

• dns1.p08.nsone.net
• dns2.p08.nsone.net
• dns3.p08.nsone.net
• dns4.p08.nsone.net

MX

• 0 firstconcepts-nl.mail.protection.outlook.com

Verified for

• Google
• Microsoft 365

Email authentication partial

SPF

v=spf1 include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=none; rua=mailto:dmarc@smtp-staging.mailtrap.net; ruf=mailto:dmarc@smtp-staging.mailtrap.net; rf=afrf; pct=100

policy: none (monitoring only)

DKIM

• selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvrf4od4Fn7/Z7YMjGzLdMO75O4ZhN3Gswiq/2GKFyjLyv+i6WxDmAiHSUplb0+hpolajmcLYCOvXeJ…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

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

present

• strict-transport-security

findings

• missing Content Security Policy
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

Linked from (1)

• productprivatelease.nl×2