tunnelbuilder.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-16 · ok HTTP/1.1 200 2855 ms crawled 2026-05-11

GB · 51.11.187.219 · AS8075 Microsoft Corporation

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Tunnelbuilder - Promoting the world’s tunnelling industry to a huge qualified audience
Description: Tunnelbuilder.com is an online news source for tunnelling projects and tunnelling news worldwide

Technology

Server: Microsoft-IIS

Analytics

Google Tag Manager

Fonts

Font Awesome
Google Fonts

Third-party hosts loaded (6)

ajax.googleapis.com×1
cdnjs.cloudflare.com×1
fonts.googleapis.com×1
stackpath.bootstrapcdn.com×1
use.fontawesome.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

Tucows Domains Inc.

Created

1998-11-04

Expires

2026-11-03 168 days left

Updated

2025-10-04

Name servers

ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com

DNS records live

NS

ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com

MX

0 tunnelbuilder-com.mail.protection.outlook.com

TXT

google-site-verification=5edocQMTys6b8tgWQC2Ztscurzx0aYRV4GVnvQhJrnQ
MS=ms29631916
mscid=frhnZM0rOpwXhWiFxW/GKe2eChDXZugjD/m54Ac6Zn9RQsc3gvcV/JHNHzFPQYIhkidQwIN5eFFtmm9xYrS5xg==

Email authentication weak

SPF

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

strict (-all)

DMARC

not published

DKIM

s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoEqevqaSQ4s5l+pfieFdVceFALXIUs2QhplUTv1i9lNSIa0jqX8lyBw7ySY16K1paEneeorBvYBlixsOEF…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdC1Ch6vccMQMvJ39e3aTYwzRXIjxf4WDDGPDIcmX+zJ0omEv1m4wY1TCq66fLxUQruyGAlGVd8hhUmI03959Ffx…

selectors probed

Certificate (current)

R13

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

Expires in 45 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://tunnelbuilder.com/

findings

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