indexo.dev

recursiveadaptation.com

.com crawl

First seen 2026-04-14 · Last seen 2026-05-11 · ok HTTP/1.1 200 731 ms crawled 2026-05-07

US · 172.64.151.232 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Recursive Adaptation | Nicholas Reville | Substack
Description
Strategic science and policy for mental health and addiction. Completely free. Click to read Recursive Adaptation, a Substack publication with thousands of subscribers.
Language
en
Canonical
https://recursiveadaptation.com/
Feeds

Open Graph

url
https://recursiveadaptation.com/
title
Recursive Adaptation | Nicholas Reville | Substack
description
Strategic science and policy for mental health and addiction. Completely free. Click to read Recursive Adaptation, a Substack publication with thousands of subscribers.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights

Third-party hosts loaded (3)

  • substackcdn.com×255
  • js.sentry-cdn.com×1
  • static.cloudflareinsights.com×1

Registration

Registrar
NameCheap, Inc.
Created
2024-05-04
Expires
2027-05-04 350 days left
Updated
2026-04-04
Name servers
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
CNAME
  • target.substack-custom-domains.com

Email authentication weak

SPF
not published
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@recursiveadaptation.com; ruf=mailto:dmarc@recursiveadaptation.com; fo=1; adkim=r; aspf=r; pct=100
policy: none (monitoring only)
DKIM
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuZ712cHaQE8+h6wmbRb7MzVqkvmtEdQE5meLCUIz7FHjja1/I4UN4EQyUA+RvdDWZLD2ZL501WMR8E1raU…
selectors probed

Certificate (current)

WE1
from 2026-04-20 to 2026-07-19
Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://recursiveadaptation.com/

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 (2)