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executablebooks.org

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First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 1618 ms crawled 2026-05-19

US · 104.16.253.120 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
The Executable Books Project
Description
This is the team documentation for the ExecutableBooksProject, an international collaboration to build open source tools that facilitate publishing computational narratives using the Jupyter ecosys...
Language
en
Feeds

Open Graph

url
https://executablebooks.org/en/latest/
title
The Executable Books Project
site name
Executable Book Project
description
This is the team documentation for the ExecutableBooksProject, an international collaboration to build open source tools that facilitate publishing computational narratives using the Jupyter ecosys...

Technology

CDN
Cloudflare
CMS
Gatsby

Third-party hosts loaded (2)

  • myst-parser.readthedocs.io×3
  • jupyterbook.org×2

Social

Registration

Registrar
NameCheap, Inc.
Created
2020-04-23
Expires
2027-04-23 338 days left
Updated
2026-03-29
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
  • readthedocs.io
TXT
  • google-site-verification=wJ1GvmfiGWmRoT7WQyByVAej_sbaK1gffl5LjfW3PVs

Email authentication weak

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

Certificate (current)

WE1
from 2026-05-06 to 2026-08-04
Expires in 77 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://executablebooks.org/en/latest/

present
  • x-content-type-options
  • referrer-policy
  • cross-origin-opener-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
no-referrer-when-downgrade
x-content-type-options
nosniff
cross-origin-opener-policy
same-origin

Links to (2)

Linked from (1)