indexo.dev

coauthored.co

.co crawl

First seen 2026-04-13 · Last seen 2026-05-01 · ok HTTP/1.1 200 3537 ms crawled 2026-05-05

US · 172.64.151.232 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
CoAuthored | Foster | Substack
Description
The community-powered Substack of Foster, where we are devoted to the practice of writing for its own sake. Click to read CoAuthored, by Foster, a Substack publication with thousands of subscribers.
Language
en
Canonical
https://coauthored.co/
Feeds

Open Graph

url
https://coauthored.co/
title
CoAuthored | Foster | Substack
description
The community-powered Substack of Foster, where we are devoted to the practice of writing for its own sake. Click to read CoAuthored, by Foster, a Substack publication with thousands of subscribers.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights
Fonts
  • Google Fonts

Third-party hosts loaded (5)

  • substackcdn.com×257
  • fonts.gstatic.com×1
  • images.unsplash.com×1
  • js.sentry-cdn.com×1
  • static.cloudflareinsights.com×1

DNS records live

NS
  • ivy.ns.cloudflare.com
  • matteo.ns.cloudflare.com

Certificate (current)

WE1
from 2026-04-09 to 2026-07-08
Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://coauthored.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 (3)

Linked from (1)