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Domain report

coding101.tw

coding101.tw ranks in the top 0.18% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore coding101.tw in the Web Graph

Connectivity

#236,076harmonic-centrality rank
Top percentile
0.18%
Hosts observed
4

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://coding101.tw/ answered with HTTP 200.

DNS records

A
  • 217.70.184.55
AAAA
No records found.
MX
  • 10 spool.mail.gandi.net.
  • 50 fb.mail.gandi.net.
NS
  • ns-106-c.gandi.net.
  • ns-217-a.gandi.net.
  • ns-110-b.gandi.net.

Live preview

Screenshot of coding101.tw

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

Since coding101.tw 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
no-cache, no-store, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
base-uri 'self';object-src 'none';report-uri /_/view/cspreport;script-src 'report-sample' 'nonce-2cVkL8GxTWfNNwVQerFQWw' 'unsafe-inline' 'unsafe-eval';worker-src 'self';frame-ancestors https://google-admin.corp.google.com/
Strict-Transport-Security
Not sent
X-Frame-Options
DENY
X-Content-Type-Options
nosniff
Referrer-Policy
origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://coding101.tw/HTTP 302

    → https://sites.google.com/g.nccu.edu.tw/2027coding101/index

  2. 2.https://sites.google.com/g.nccu.edu.tw/2027coding101/indexHTTP 200

Meta tags

Title
Coding101 >2027
Description
Not set
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Coding101 >2027
Open Graph description
Not set
Open Graph image
https://sites.google.com/sitesv-images-rt/AMxu72tlkgXS7bTFCVxOSeyg5OWZg82s__CaDNOA0p748Lm8Dk_yOuJhusSBB-gUxVStO_pa7KOfdurfl6wlI65X--eYGb2BaNUh492YaGdamvKdQga2Dk2TdWVV1uiUDvi7RbqhX9dfKlqWxaloMd3iy89D3E7NTKfucHJFg1hxDwVyT8Zy_BPVcSfe8_LUHjw7xm9AbRxr1gYisxX_kmsP_VNKbx7Jdlh2GRl50ckTfEk=w1280
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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