indexo.dev

teachinghistory.org

.org crawl

First seen 2026-04-20 · Last seen 2026-05-18 · ok HTTP/1.1 200 827 ms crawled 2026-05-14

US · 129.174.134.63 · AS11279 George Mason University

Reputation 100/100

sector education type homepage

HTML metadata

Title
Home | TeachingHistory.org
Description
TeachingHistory.org is designed to help K–12 history teachers access resources and materials to improve U.S. history education in the classroom.
Language
en
Generator
Drupal 10 (https://www.drupal.org)
Canonical
https://teachinghistory.org/

Technology

CMS
Drupal

Third-party hosts loaded (1)

  • rrchnm.org×2

Social

Registration

Registrar
NameCheap, Inc.
Created
2003-01-27
Expires
2027-01-27 252 days left
Updated
2026-01-02
Name servers
  • ns1.rrchnm.org
  • ns2.rrchnm.org
  • ns3.rrchnm.org

DNS records live

NS
  • ns1.rrchnm.org
  • ns2.rrchnm.org
  • ns3.rrchnm.org
TXT
  • hello teachinghistory.org

Email authentication no MX

SPF
v=spf1 include:spf.protection.outlook.com ip4:129.174.0.0/16 mx -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; aspf=s; rua=mailto:dmarc@rrchnm.org
policy: quarantine
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-05-14 to 2026-08-12
Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://teachinghistory.org/

present
  • x-frame-options
  • x-content-type-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff

Links to (2)

Linked from (2)