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Domain report

code4japan.org

code4japan.org ranks in the top 0.33% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 37 distinct hosts observed under it.

Explore code4japan.org in the Web Graph

Connectivity

#445,528harmonic-centrality rank
Top percentile
0.33%
Hosts observed
37

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://code4japan.org/ answered with HTTP 200.

DNS records

A
  • 76.76.21.21
AAAA
No records found.
MX
  • 1 aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
NS
  • ns-1385.awsdns-45.org.
  • ns-1935.awsdns-49.co.uk.
  • ns-228.awsdns-28.com.
  • ns-907.awsdns-49.net.

Live preview

This is a live, sandboxed embed of code4japan.org — not a copy. What it shows can change any time the site itself does.

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
public, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=63072000
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://code4japan.org/HTTP 308

    → https://code4japan.org/

  2. 2.https://code4japan.org/HTTP 308

    → https://www.code4japan.org/

  3. 3.https://www.code4japan.org/HTTP 200

Meta tags

Title
一般社団法人コード・フォー・ジャパン | Code for Japan
Description
Not set
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
一般社団法人コード・フォー・ジャパン | Code for Japan
Open Graph description
Code for Japanは市民（Civic）が技術（Tech）を使って地域や身近な困りごとを解決する、シビックテック活動に取り組む団体です。Code for Japanの仲間と一緒にシビックテックを楽しみましょう！
Open Graph image
https://www.code4japan.org/images/ogp-default.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
一般社団法人コード・フォー・ジャパン | Code for Japan
Twitter image
https://www.code4japan.org/images/ogp-default.jpg

robots.txt

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

Sitemap declared:

  • https://www.code4japan.org/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Next.jsframework

    X-Powered-By: Next.js

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