indexo.dev

siersgroep.nl

.nl crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 2431 ms crawled 2026-06-01

US · 198.202.211.1 · AS209242 Cloudflare London, LLC

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Siers Groep ▸ Home
Description
Siers Groep Oldenzaal levert een compleet pakket op het gebied van de ondergrondse infra van Nederland: Gas, water, elektra, telecom en warmte.
Language
nl-NL
Translations
  • de
  • nl

Open Graph

title
Siers Groep ▸ Home
description
Siers Groep Oldenzaal levert een compleet pakket op het gebied van de ondergrondse infra van Nederland: Gas, water, elektra, telecom en warmte.

Technology

CDN
Cloudflare
jQuery
3.5.1
Analytics
  • Google Tag Manager

Third-party hosts loaded (6)

  • cdn.prod.website-files.com×65
  • cdn.jsdelivr.net×5
  • www.googletagmanager.com×2
  • cdn.cookie-script.com×1
  • cloud.umami.is×1
  • d3e54v103j8qbb.cloudfront.net×1

Contact

Email
Phone

DNS records live

NS
  • dns1.hosted.nl
  • dns2.hosted.nl
  • dns3.hosted.nl
MX
  • 10 siersgroep-nl.mail.protection.outlook.com
TXT
Show 4 TXT records
  • autodesk-domain-verification=K2CUPaFuBGnqcHhSZD0H
  • v=DMARC1; p=none; sp=none;
  • /0BUlggUbhP+Wv2KeDDxoQQGdNC6bjGs3vkeKhRPjS0w8IsmpSVTL+TRTT7qCxyGeaQFJ+sjh/QP86f47dMbvw==
  • workspace365-url=https://portal.workspace365.net/siersgroep
Verified for
  • Apple
  • Google
  • Microsoft 365

Email authentication partial

SPF
v=spf1 include:spf.protection.outlook.com include:mail.siersgroep.nl include:spf.topdesk.net include:spf.eu.signature365.net include:148279327.spf03.hubspotemail.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none; pct=100; rua=mailto:systeembeheer@siersgroep.nl!10m
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDVJm62kSqnlDNSD0Q2l07cpsqjj4c62ckxlZQPlGX3zTulb0z/QkGP40WLU2WbHg24MB7YkhHMmlOS98it0G…
selectors probed

Certificate (current)

WE1
from 2026-05-01 to 2026-07-30
Expires in 57 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (1)

Linked from (1)