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SGSiteGraph

sumo.or.jp

日本相撲協会公式サイト

Last scanned Jul 25, 2026, 6:25 AM · 2 views

75

Overall score

Fair

Summary

入場券や相撲観戦の情報も充実。番付の即日発表や相撲歴史文化等、最新情報提供中。. This website uses Apache hosted on GMO-I-R1 - GMO Internet, Inc., JP. SEO is good (75/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing canonical link.

入場券や相撲観戦の情報も充実。番付の即日発表や相撲歴史文化等、最新情報提供中。

Japan
Hosted on GMO-I-R1 - GMO Internet, Inc., JP

Top issues to fix

9 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

+3 more issues — details in the sections below.

75

SEO

4 issue(s) found

90

Performance

157 ms

65

Security

HTTPS & header checks

70

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

入場券や相撲観戦の情報も充実。番付の即日発表や相撲歴史文化等、最新情報提供中。

YouTubeX (Twitter)Instagram

Meta tags

Title
日本相撲協会公式サイト
Description
入場券や相撲観戦の情報も充実。番付の即日発表や相撲歴史文化等、最新情報提供中。
Canonical
Language
ja
Charset
UTF-8
Viewport
width=device-width,initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
日本相撲協会公式サイト
og:description
—
og:type
website
og:url
https://www.sumo.or.jp/

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQueryApache

Hosting & CDN

CDN provider
—
IP address
150.95.44.11
ASN
AS7506 (GMO-I-R1 - GMO Internet, Inc., JP)

DNS records

TypeValue
A
  • 150.95.44.11
AAAA—
MX
  • mxi.alpha-prm.jp
TXT—
NS
  • fjkdns12.alpha-prm.jp
  • fjkdns11.alpha-prm.jp
  • fjkdns13.alpha-prm.jp
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.2
Issuer
GlobalSign nv-sa
Subject
*.sumo.or.jp
Valid from
Aug 18, 2025
Valid to
Sep 19, 2026
Days until expiry
55
SAN domains
*.sumo.or.jp, sumo.or.jp

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 7 · H3 8

Links

363 internal · 109 external · 0 broken

Images

444 total · 258 missing alt

Scripts / Styles

14 scripts · 8 stylesheets

JS / CSS size

206 KB · 103 KB

Page size

277 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing canonical link
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Over half of images are missing alt text

Scan details

Requested URL
https://sumo.or.jp
Final URL
https://sumo.or.jp
HTTP status
200
HTTP version
HTTP/1.1
Response time
152 ms
HTML size
277 KB
Redirect chain
https://sumo.or.jp

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sumo.or.jp use?
sumo.or.jp is built with jQuery, Apache.
Is sumo.or.jp secure (HTTPS)?
Yes. sumo.or.jp uses TLS 1.2 with a certificate issued by GlobalSign nv-sa, valid until Sep 19, 2026.
Who hosts sumo.or.jp?
sumo.or.jp is hosted on GMO-I-R1 - GMO Internet, Inc., JP.
What is sumo.or.jp's SEO score?
sumo.or.jp scored 75/100 for SEO in the latest analysis (fair).
What is sumo.or.jp's overall website score?
sumo.or.jp has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.