indexo.dev

kerodon.net

.net crawl

First seen 2026-04-20 · Last seen 2026-05-11 · ok HTTP/1.1 200 3872 ms crawled 2026-05-14

US · 35.173.69.207 · AS14618 Amazon.com, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Kerodon
Description
An online resource for homotopy-coherent mathematics
Language
en

Open Graph

title
Kerodon
description
An online resource for homotopy-coherent mathematics

Technology

Server
PythonAnywhere
CMS
Gatsby
Analytics
  • Plausible

Third-party hosts loaded (5)

  • cdnjs.cloudflare.com×2
  • gitcdn.github.io×2
  • maxcdn.bootstrapcdn.com×2
  • code.jquery.com×1
  • plausible.io×1

Registration

Registrar
Tucows Domains Inc.
Created
2018-02-16
Expires
2027-02-16 273 days left
Updated
2026-02-01
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

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-05-11 to 2026-08-09
Expires in 82 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://kerodon.net/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)