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dena.com

株式会社ディー・エヌ・エー | DeNA

Last scanned Jul 26, 2026, 11:49 AM

79

Overall score

Fair

Summary

株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。. This website is hosted on Google Cloud. SEO is fair (70/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.

株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。

United States
Hosted on Google Cloud

Top issues to fix

9 issues found · 4 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 viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • 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.

+3 more issues — details in the sections below.

70

SEO

4 issue(s) found

100

Performance

149 ms

65

Security

HTTPS & header checks

85

Accessibility

2 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.

株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。

Meta tags

Title
株式会社ディー・エヌ・エー | DeNA
Description
株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。
Canonical
Language
ja
Charset
UTF-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
株式会社ディー・エヌ・エー | DeNA
og:description
株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。
og:type
website
og:url
https://dena.com/

Twitter Card

twitter:card
summary_large_image
twitter:title
株式会社ディー・エヌ・エー | DeNA
twitter:description
株式会社ディー・エヌ・エー【DeNA】の公式ホームページです。DeNAのサービス、企業情報などをご紹介しています。

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Google Cloud
CDN provider
—
IP address
216.239.34.21
ASN
AS15169 (GOOGLE - Google LLC, US)

DNS records

TypeValue
A
  • 216.239.34.21
  • 216.239.38.21
  • 216.239.32.21
  • 216.239.36.21
AAAA
  • 2001:4860:4802:36::15
  • 2001:4860:4802:38::15
  • 2001:4860:4802:32::15
  • 2001:4860:4802:34::15
MX
  • alt1.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • aspmx.l.google.com
  • alt4.aspmx.l.google.com
TXT—
NS
  • ns-1687.awsdns-18.co.uk
  • ns-1275.awsdns-31.org
  • ns-663.awsdns-18.net
  • ns-304.awsdns-38.com
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
dena.com
Valid from
Jul 13, 2026
Valid to
Oct 11, 2026
Days until expiry
74
SAN domains
dena.com

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 · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

608 B · 0 B

Page size

2.3 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
112

SEO issues

  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • robots.txt not found

Accessibility issues

  • No H1 heading found
  • Missing viewport meta tag

Scan details

Requested URL
https://dena.com
Final URL
https://dena.com
HTTP status
200
HTTP version
HTTP/2
Response time
149 ms
HTML size
2.3 KB
Redirect chain
https://dena.com

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Frequently asked questions

What technology does dena.com use?
We did not detect any specific technologies for dena.com in the latest scan.
Is dena.com secure (HTTPS)?
Yes. dena.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 11, 2026.
Who hosts dena.com?
dena.com is hosted on Google Cloud.
What is dena.com's SEO score?
dena.com scored 70/100 for SEO in the latest analysis (fair).
What is dena.com's overall website score?
dena.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.