indexo.dev

fundamentaluncertainty.com

.com crawl

First seen 2026-05-08 · Last seen 2026-05-08 · ok HTTP/1.1 200 1308 ms crawled 2026-05-15

US · 185.199.110.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Fundamental Uncertainty
Description
A book about the fundamental uncertainty at the heart of all knowledge, by Gordon Seidoh Worley.
Language
en

Technology

CDN
Fastly
Server
GitHub.com

Registration

Registrar
Squarespace Domains LLC
Created
2024-02-04
Expires
2027-02-04 260 days left
Updated
2026-01-20
Name servers
  • dns1.p07.nsone.net
  • dns2.p07.nsone.net
  • dns3.p07.nsone.net
  • dns4.p07.nsone.net
  • ns01.squarespacedns.com
  • ns02.squarespacedns.com
  • ns03.squarespacedns.com
  • ns04.squarespacedns.com

DNS records live

NS
  • dns1.p07.nsone.net
  • dns2.p07.nsone.net
  • dns3.p07.nsone.net
  • dns4.p07.nsone.net
  • ns01.squarespacedns.com
  • ns02.squarespacedns.com
  • ns03.squarespacedns.com
  • ns04.squarespacedns.com
MX
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org

Email authentication weak

SPF
v=spf1 include:mailgun.org ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-19 to 2026-07-18
Expires in 60 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://fundamentaluncertainty.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)