indexo.dev

introtcs.org

.org crawl

First seen 2026-04-22 · Last seen 2026-05-12 · ok HTTP/1.1 200 1310 ms crawled 2026-05-15

DE · 35.157.26.135 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Introduction to Theoretical Computer Science: index
Description
Textbook on Theoretical Computer Science by Boaz Barak
Language
en

Open Graph

url
https://introtcs.org/
title
Introduction to Theoretical Computer Science: index
description
Textbook on Theoretical Computer Science by Boaz Barak

Technology

CDN
Netlify

Third-party hosts loaded (2)

  • cdn.jsdelivr.net×3
  • i.creativecommons.org×1

Social

Registration

Registrar
Moniker Online Services LLC
Created
2016-12-12
Expires
2026-12-12 207 days left
Updated
2026-03-14
Name servers
  • dns1.p08.nsone.net
  • dns2.p08.nsone.net
  • dns3.p08.nsone.net
  • dns4.p08.nsone.net

DNS records live

NS
  • dns1.p08.nsone.net
  • dns2.p08.nsone.net
  • dns3.p08.nsone.net
  • dns4.p08.nsone.net

Email authentication no MX

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

Certificate (current)

E8
from 2026-04-16 to 2026-07-15
Expires in 57 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://introtcs.org/public/index.html

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000

Links to (9)

Linked from (1)