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SGSiteGraph

dmm.co.jp

年齢認証 - FANZA

Last scanned Jul 29, 2026, 12:00 PM · 11 views

75

Overall score

Fair

Summary

From here on, it will be an adult site that handles adult products. This website uses Next.js behind CloudFront CDN. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing canonical link.

From here on, it will be an adult site that handles adult products. Access by anyone under the age of 18 is strictly prohibited.

Top issues to fix

11 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.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • 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.

+5 more issues — details in the sections below.

60

SEO

6 issue(s) found

90

Performance

1.39 s

65

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-3 overall since Jul 18, 2026

Overall
75
SEO
60
Security
65
Performance
90
Accessibility
90

Organization

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

From here on, it will be an adult site that handles adult products. Access by anyone under the age of 18 is strictly prohibited.

Meta tags

Title
年齢認証 - FANZA
Description
From here on, it will be an adult site that handles adult products. Access by anyone under the age of 18 is strictly prohibited.
Canonical
Language
ja
Charset
utf-8
Viewport
width=device-width
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
CloudFront
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
GlobalSign nv-sa
Subject
*.dmm.co.jp
Valid from
Feb 20, 2026
Valid to
Mar 24, 2027
Days until expiry
237
SAN domains
*.dmm.co.jp, dmm.co.jp

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

2 internal · 0 external · 2 broken

Images

4 total · 0 missing alt

Scripts / Styles

14 scripts · 0 stylesheets

JS / CSS size

4.8 KB · 22.2 KB

Page size

34.2 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 H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://dmm.co.jp
Final URL
https://www.dmm.co.jp/en/age_check/=/?rurl=https%3A%2F%2Fwww.dmm.co.jp%2Ftop%2F
HTTP status
200
HTTP version
HTTP/2
Response time
1.39 s
HTML size
34.2 KB
Redirect chain
https://dmm.co.jp → https://www.dmm.co.jp:443/ → https://www.dmm.co.jp/top/ → https://www.dmm.co.jp/age_check/=/?rurl=https%3A%2F%2Fwww.dmm.co.jp%2Ftop%2F → https://www.dmm.co.jp/en/age_check/=/?rurl=https%3A%2F%2Fwww.dmm.co.jp%2Ftop%2F

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Frequently asked questions

What technology does dmm.co.jp use?
dmm.co.jp is built with Next.js.
Is dmm.co.jp secure (HTTPS)?
Yes. dmm.co.jp uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Mar 24, 2027.
Who hosts dmm.co.jp?
Hosting provider information for dmm.co.jp is not available yet.
What is dmm.co.jp's SEO score?
dmm.co.jp scored 60/100 for SEO in the latest analysis (fair).
What is dmm.co.jp's overall website score?
dmm.co.jp has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.
Has dmm.co.jp's score changed over time?
dmm.co.jp's overall score has declined by 3 points (from 78 to 75) since Jul 18, 2026.