dto.jp
ERROR: The request could not be satisfied
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Fair
Top issues to fix
12 issues found · 4 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 meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
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.
+6 more issues — details in the sections below.
Summary
This website is hosted on AWS. SEO is fair (60/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
SEO
6 issue(s) found
Performance
6 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Meta tags
- Title
- ERROR: The request could not be satisfied
- Description
- Canonical
- Language
- Charset
- iso-8859-1
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 13.227.249.15
- 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 1.3
- Issuer
- Amazon
- Subject
- dto.jp
- Valid from
- May 4, 2026
- Valid to
- Nov 17, 2026
- Days until expiry
- 122
- SAN domains
- dto.jp, s.dto.jp, www.dto.jp, rd.dto.jp, m.dto.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 1 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
0 scripts · 0 stylesheets
JS / CSS size
0 B · 0 B
Page size
919 B
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://dto.jp
- Final URL
- https://dto.jp
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 6 ms
- HTML size
- 919 B
- Redirect chain
- https://dto.jp
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Frequently asked questions
- What technology does dto.jp use?
- We did not detect any specific technologies for dto.jp in the latest scan.
- Is dto.jp secure (HTTPS)?
- Yes. dto.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Nov 17, 2026.
- Who hosts dto.jp?
- dto.jp is hosted on AWS, behind CloudFront CDN.
- What is dto.jp's SEO score?
- dto.jp scored 60/100 for SEO in the latest analysis (fair).
- What is dto.jp's overall website score?
- dto.jp has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card