indexo.dev

suchanek.co

.co crawl

First seen 2026-04-13 · Last seen 2026-05-01 · ok HTTP/1.1 200 638 ms crawled 2026-05-06

US · 104.18.36.24 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Tim Suchanek | Substack
Description
Writing about life, engineering, and AI. Click to read Tim Suchanek, a Substack publication. Launched 3 years ago.
Language
en
Canonical
https://suchanek.co/
Feeds

Open Graph

url
https://suchanek.co/
title
Tim Suchanek | Substack
description
Writing about life, engineering, and AI. Click to read Tim Suchanek, a Substack publication. Launched 3 years ago.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights

Third-party hosts loaded (3)

  • substackcdn.com×227
  • js.sentry-cdn.com×1
  • static.cloudflareinsights.com×1

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 10 eforward1.registrar-servers.com
  • 10 eforward2.registrar-servers.com
  • 10 eforward3.registrar-servers.com
  • 15 eforward4.registrar-servers.com
  • 20 eforward5.registrar-servers.com
CNAME
  • target.substack-custom-domains.com

Email authentication partial

SPF
v=spf1 include:spf.efwd.registrar-servers.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-06 to 2026-07-06
Expires in 48 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://suchanek.co/

present
  • strict-transport-security
  • content-security-policy
findings
  • CSP uses wildcard sources
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
content-security-policy
frame-ancestors 'self' https://*.substack.com https://substack.com
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (2)

Linked from (1)