si-coding.net
レッツ！ナンプレ｜無料の数独ゲームで毎日脳トレ
Last scanned Jul 26, 2026, 1:19 PM
Overall score
Great
Summary
レッツ！ナンプレでは無料でナンプレ（数独）パズルが遊べます。問題は毎日10問追加されます。難易度は入門から難問までありますので、自分のレベルに合わせ��… This website uses Nginx hosted on XSERVER - Xserver Inc., JP. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
レッツ！ナンプレでは無料でナンプレ（数独）パズルが遊べます。問題は毎日10問追加されます。難易度は入門から難問までありますので、自分のレベルに合わせて遊べます。無料のナンプレ（数独）で毎日脳トレ！
- Japan
- Hosted on XSERVER - Xserver Inc., JP
Top issues to fix
6 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
SEO
2 issue(s) found
Performance
183 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
レッツ！ナンプレでは無料でナンプレ（数独）パズルが遊べます。問題は毎日10問追加されます。難易度は入門から難問までありますので、自分のレベルに合わせて遊べます。無料のナンプレ（数独）で毎日脳トレ！
Meta tags
- Title
- レッツ！ナンプレ｜無料の数独ゲームで毎日脳トレ
- Description
- レッツ！ナンプレでは無料でナンプレ（数独）パズルが遊べます。問題は毎日10問追加されます。難易度は入門から難問までありますので、自分のレベルに合わせて遊べます。無料のナンプレ（数独）で毎日脳トレ！
- Canonical
- https://si-coding.net/
- Language
- ja
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=2.0,user-scalable=yes
- Robots meta
- Manifest
- https://si-coding.net/manifest.json?20181227
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- XSERVER - Xserver Inc., JP
- CDN provider
- —
- IP address
- 103.3.2.95
- ASN
- AS131965 (XSERVER - Xserver Inc., JP)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- www.si-coding.net
- Valid from
- Jun 27, 2026
- Valid to
- Sep 25, 2026
- Days until expiry
- 58
- SAN domains
- si-coding.net, www.si-coding.net
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 1 · H2 1 · H3 0
Links
13 internal · 3 external · 0 broken
Images
3 total · 0 missing alt
Scripts / Styles
17 scripts · 1 stylesheets
JS / CSS size
539 KB · 17.1 KB
Page size
22.1 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- Meta description longer than 160 characters
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://si-coding.net
- Final URL
- https://si-coding.net
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 183 ms
- HTML size
- 22.1 KB
- Redirect chain
- https://si-coding.net
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does si-coding.net use?
- si-coding.net is built with jQuery, Google Ads, Nginx.
- Is si-coding.net secure (HTTPS)?
- Yes. si-coding.net uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 25, 2026.
- Who hosts si-coding.net?
- si-coding.net is hosted on XSERVER - Xserver Inc., JP.
- What is si-coding.net's SEO score?
- si-coding.net scored 90/100 for SEO in the latest analysis (excellent).
- What is si-coding.net's overall website score?
- si-coding.net has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card