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Domain report

shareclass.org

shareclass.org ranks in the top 0.12% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore shareclass.org in the Web Graph

Connectivity

#156,712harmonic-centrality rank
Top percentile
0.12%
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

200HTTP status

https://shareclass.org/ answered with HTTP 200.

DNS records

A
  • 104.21.85.32
  • 172.67.201.191
AAAA
  • 2606:4700:3030::ac43:c9bf
  • 2606:4700:3035::6815:5520
MX
No records found.
NS
  • naomi.ns.cloudflare.com.
  • owen.ns.cloudflare.com.

Live preview

Screenshot of shareclass.org

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

Since shareclass.org 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
DENY
X-Content-Type-Options
nosniff
Referrer-Policy
same-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://shareclass.org/HTTP 301

    → https://www.shareclass.org/

  2. 2.https://www.shareclass.org/HTTP 200

Meta tags

Title
ShareClass：備一堂孩子喜歡，且有效的課！
Description
ShareClass 是一個開放的教學資源共享平台，幫助中小學教師探索、分享，與使用優秀的教育內容
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
ShareClass：備一堂孩子喜歡，且有效的課！
Open Graph description
ShareClass 是一個開放的教學資源共享平台，幫助中小學教師探索、分享，與使用優秀的教育內容
Open Graph image
https://storage.googleapis.com/shareclass/static/sc_og_image.png
Open Graph type
website
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
0
Disallow rules (other agents)
0

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

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Similar connectivity

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