indexo.dev

invariants.org.uk

.uk crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 2326 ms crawled 2026-05-18

US · 104.21.35.249 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
The Invariants
Language
en-NZ
Canonical
https://www.invariants.org.uk

Open Graph

url
https://www.invariants.org.uk
title
The Invariants
site name
The Invariants

Technology

CDN
Cloudflare
CMS
Squarespace
Fonts
  • Adobe Fonts
  • Google Fonts
Third-party hosts loaded (8)
  • images.squarespace-cdn.com×35
  • assets.squarespace.com×12
  • definitions.sqspcdn.com×8
  • static1.squarespace.com×5
  • use.typekit.net×2
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1
  • p.typekit.net×1

Social

Contact

Phone

Registration

Registrar
Squarespace Domains LLC t/a SQUARESPACE DOMAINS
Created
2010-04-29
Expires
2027-04-29 343 days left
Updated
2026-04-14
Name servers
  • coco.ns.cloudflare.com.
  • peyton.ns.cloudflare.com.

DNS records live

NS
  • coco.ns.cloudflare.com
  • peyton.ns.cloudflare.com
MX
  • 10 _dc-mx.a1a7e69247ea.invariants.org.uk
Verified for
  • Google

Email authentication weak

SPF
v=spf1 a mx ip4:213.168.249.173 include:_spf.google.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-27 to 2026-07-26
Expires in 67 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.invariants.org.uk/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
strict-transport-security
max-age=15552000

Links to (2)

Linked from (1)