tangosta.jp
タンゴスタ！ | 生徒用ログイン
Last scanned Jul 26, 2026, 12:49 PM
Overall score
Fair
Summary
「タンゴスタ！」へようこそ。先生から配付されたIDとパスワードを使用してログインしてください。. This website uses Nginx hosted on AWS. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores good (80/100) and performance fair (60/100). Top issue: Missing canonical link.
「タンゴスタ！」へようこそ。先生から配付されたIDとパスワードを使用してログインしてください。
- United States
- Hosted on AWS
Top issues to fix
8 issues found · 3 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.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+2 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
625 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
「タンゴスタ！」へようこそ。先生から配付されたIDとパスワードを使用してログインしてください。
Meta tags
- Title
- タンゴスタ！ | 生徒用ログイン
- Description
- 「タンゴスタ！」へようこそ。先生から配付されたIDとパスワードを使用してログインしてください。
- Canonical
- Language
- ja
- Charset
- Viewport
- width=device-width, user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 57.181.157.152
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- Amazon
- Subject
- tangosta.jp
- Valid from
- Jun 19, 2026
- Valid to
- Jan 2, 2027
- Days until expiry
- 158
- SAN domains
- tangosta.jp
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 1 · H3 0
Links
0 internal · 0 external · 0 broken
Images
2 total · 0 missing alt
Scripts / Styles
5 scripts · 2 stylesheets
JS / CSS size
3.5 MB · 313 KB
Page size
71.5 KB
Robots.txt & Sitemap
- robots.txt
- 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
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://tangosta.jp
- Final URL
- https://tangosta.jp/students/sign_in
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 624 ms
- HTML size
- 71.5 KB
- Redirect chain
- https://tangosta.jp → https://tangosta.jp/students → https://tangosta.jp/students/sign_in
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does tangosta.jp use?
- tangosta.jp is built with Ruby on Rails, Google Analytics, Nginx.
- Is tangosta.jp secure (HTTPS)?
- Yes. tangosta.jp uses TLS 1.2 with a certificate issued by Amazon, valid until Jan 2, 2027.
- Who hosts tangosta.jp?
- tangosta.jp is hosted on AWS.
- What is tangosta.jp's SEO score?
- tangosta.jp scored 65/100 for SEO in the latest analysis (fair).
- What is tangosta.jp's overall website score?
- tangosta.jp has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card