indexo.dev

gdtrules.com

.com crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 998 ms crawled 2026-05-18

US · 50.115.47.50 · AS18450 WebNX, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
The GD&T Reference Center... A Virtual Knowledge Base of GD&T
Description
The GD&T Reference Center is a Virtual Knowledge Base of GD&T - an easy to use interface and search feature to find all things related to GD&T - Definitions, Symbols, Tips, Case Studies, Videos, and so much more!

Technology

Server
LiteSpeed
Analytics
  • Google Tag Manager
Social widgets
  • YouTube Embed

Third-party hosts loaded (4)

  • challenges.cloudflare.com×1
  • px.ads.linkedin.com×1
  • www.googletagmanager.com×1
  • www.youtube.com×1

DNS records live

NS
  • ns1.webcitz.com
  • ns2.webcitz.com
  • ns3.webcitz.com
MX
  • 0 gdtrules.com

Email authentication weak

SPF
v=spf1 +a +mx +ip4:217.79.243.138 +ip4:50.115.47.50 +ip4:46.21.149.250 ~all
softfail (~all)
DMARC
not published
DKIM
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAog5GYBMYnajOw3jGGWEIOKAcnfk0X+KXqey6NxSFKQ5lWHg+8pF0Mg+jTV8EJ+bvuPSV7llcmzoVY4…
selectors probed

Certificate (current)

R13
from 2026-05-15 to 2026-08-13
Expires in 85 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (1)

Linked from (1)