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Domain report

codehs.com

codehs.com ranks in the top 0.016% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 18 distinct hosts observed under it.

Explore codehs.com in the Web Graph

Connectivity

#21,954harmonic-centrality rank
Top percentile
0.016%
Hosts observed
18

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://codehs.com/ answered with HTTP 200.

DNS records

A
  • 3.170.51.35
  • 3.170.51.115
  • 3.170.51.33
  • 3.170.51.113
AAAA
  • 2600:9000:2873:2200:f:5b24:f40:93a1
  • 2600:9000:2873:2c00:f:5b24:f40:93a1
  • 2600:9000:2873:f200:f:5b24:f40:93a1
  • 2600:9000:2873:a200:f:5b24:f40:93a1
  • 2600:9000:2873:c800:f:5b24:f40:93a1
  • 2600:9000:2873:9400:f:5b24:f40:93a1
  • 2600:9000:2873:9a00:f:5b24:f40:93a1
  • 2600:9000:2873:5e00:f:5b24:f40:93a1
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.
NS
  • ns-1399.awsdns-46.org.
  • ns-1584.awsdns-06.co.uk.
  • ns-387.awsdns-48.com.
  • ns-720.awsdns-26.net.

Live preview

Screenshot of codehs.com

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since codehs.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).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=utf-8
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://codehs.com/HTTP 301

    → https://codehs.com/

  2. 2.https://codehs.com/HTTP 200

Meta tags

Title
The Top Coding and Computer Science Platform for K-12 Schools | CodeHS
Description
CodeHS is the comprehensive K-12 platform for computer science, AI, and digital literacy — free curriculum, IDE, grading tools, and professional development for schools and districts nationwide.
Canonical
https://codehs.com/
Robots
Not set
Generator
Not set
Open Graph title
The Top Coding and Computer Science Platform for K-12 Schools | CodeHS
Open Graph description
CodeHS is the comprehensive K-12 platform for computer science, AI, and digital literacy — free curriculum, IDE, grading tools, and professional development for schools and districts nationwide.
Open Graph image
https://static1.codehs.com/img/codehs_appicon170x170.png
Open Graph type
website
Twitter card
summary
Twitter title
The Top Coding and Computer Science Platform for K-12 Schools | CodeHS
Twitter image
https://static1.codehs.com/img/codehs_appicon170x170.png

robots.txt

Disallow rules (User-agent: *)
10
Disallow rules (other agents)
150

Sitemap declared:

  • https://codehs.com/sitemap.xml

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • Google Tag Manageranalytics

    Found "googletagmanager.com/gtm.js" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.