Domain report
criticalthinking.com
criticalthinking.com ranks in the top 0.042% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.042%
- Hosts observed
- 2
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://criticalthinking.com/ answered with HTTP 200.
DNS records
- A
- 192.124.249.56
- AAAA
- No records found.
- MX
- 20 mx2.emailsrvr.com.
- 10 mx1.emailsrvr.com.
- NS
- ns2.inmotionhosting.com.
- ns1.inmotionhosting.com.
Live preview
This site sends "X-Frame-Options: SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN", which blocks embedding it here.
Since criticalthinking.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=UTF-8
- Cache-Control
- max-age=0, must-revalidate, no-cache, no-store, max-age=0, private, no-cache, no-store, must-revalidate
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- upgrade-insecure-requests;, “default-src"
- Strict-Transport-Security
- max-age=31536000
- X-Frame-Options
- SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN
- X-Content-Type-Options
- nosniff, nosniff
- Referrer-Policy
- strict-origin-when-cross-origin
- Permissions-Policy
- geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(),magnetometer=(),gyroscope=(),fullscreen=(self),payment=()
Redirect chain
- 1.
http://criticalthinking.com/HTTP 301→ https://criticalthinking.com/
- 2.
https://criticalthinking.com/HTTP 302→ https://www.criticalthinking.com/
- 3.
https://www.criticalthinking.com/HTTP 200
Meta tags
- Title
- Better Grades and Higher Test Scores — Guaranteed! - The Critical Thinking Co.
- Description
- The Critical Thinking Co. publishes PreK-12+ educational textbooks, activity books, & printable eBooks to develop critical thinking in core subject areas.
- Canonical
- Not set
- Robots
- INDEX,FOLLOW
- Generator
- Not set
- Open Graph title
- Not set
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- Not set
- Twitter card
- Not set
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
- Disallow rules (User-agent: *)
- 0
- Disallow rules (other agents)
- 99
No Sitemap declared in robots.txt.
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- PHPother
Cookie set: PHPSESSID
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Similar connectivity
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