indexo.dev

c4model.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-07 · ok HTTP/1.1 200 958 ms crawled 2026-05-11

US · 172.67.190.225 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Home | C4 model
Description
C4 model
Language
en-US
Generator
Jekyll v4.3.3
Canonical
https://c4model.com/

Open Graph

url
https://c4model.com/
title
Home
locale
en_US
site name
C4 model
description
C4 model

Technology

CDN
Cloudflare
Social widgets
  • YouTube Embed

Third-party hosts loaded (2)

  • simonbrown.je×1
  • www.youtube-nocookie.com×1

Social

Registration

Registrar
eNom, LLC
Created
2017-08-01
Expires
2026-08-01 73 days left
Updated
2025-07-25
Name servers
  • newt.ns.cloudflare.com
  • reza.ns.cloudflare.com

DNS records live

NS
  • newt.ns.cloudflare.com
  • reza.ns.cloudflare.com
TXT
  • brave-ledger-verification=6a0f2fe3764f70965dc9d0880a8d8ff3e6ae6b80bbbb4b8f5f9e434438cf1429

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
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://c4model.com/

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

Links to (4)

Linked from (1)