dnscheck.tools
dnscheck.tools - check your dns resolvers
Last scanned Aug 5, 2026, 6:00 PM · 11 views
Overall score
Great
Summary
A tool to test for DNS leaks, DNSSEC validation, and more. This website uses Nginx hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.
A tool to test for DNS leaks, DNSSEC validation, and more
- Germany
- Hosted on HETZNER-AS - Hetzner Online GmbH, DE
Top issues to fix
8 issues found · 1 high priority
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.
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.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+2 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
121 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 85
- SEO
- 70
- Security
- 75
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
A tool to test for DNS leaks, DNSSEC validation, and more
Contact
Email, phone, and address published on this site's own pages.
Source: https://dnscheck.tools/help
Meta tags
- Title
- dnscheck.tools - check your dns resolvers
- Description
- A tool to test for DNS leaks, DNSSEC validation, and more
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, viewport-fit=cover
- Robots meta
- Manifest
- https://dnscheck.tools/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- HETZNER-AS - Hetzner Online GmbH, DE
- CDN provider
- —
- IP address
- 116.203.95.251
- ASN
- AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- addr.tools
- Valid from
- Jul 31, 2026
- Valid to
- Oct 29, 2026
- Days until expiry
- 85
- SAN domains
- *.addr.tools, *.dnscheck.tools, *.go.dnscheck.tools, *.test-alg13-ipv4.dnscheck.tools, *.test-alg13-ipv6.dnscheck.tools, *.test-alg13.dnscheck.tools, *.test-alg14-ipv4.dnscheck.tools, *.test-alg14-ipv6.dnscheck.tools, *.test-alg14.dnscheck.tools, *.test-alg15-ipv4.dnscheck.tools, *.test-alg15-ipv6.dnscheck.tools, *.test-alg15.dnscheck.tools, *.test-ipv4.dnscheck.tools, *.test-ipv6.dnscheck.tools, *.test.dnscheck.tools, addr.tools, dnscheck.tools, ipv4.dyn.addr.tools, ipv6.dyn.addr.tools
Security headers
- Strict-Transport-SecurityEnabled
- 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 0 · H3 0
Links
2 internal · 7 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
1 scripts · 1 stylesheets
JS / CSS size
22.4 KB · 5.6 KB
Page size
2.3 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 structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://dnscheck.tools
- Final URL
- https://dnscheck.tools
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 121 ms
- HTML size
- 2.3 KB
- Redirect chain
- https://dnscheck.tools
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does dnscheck.tools use?
- dnscheck.tools is built with Nginx.
- Is dnscheck.tools secure (HTTPS)?
- Yes. dnscheck.tools uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 29, 2026.
- Who hosts dnscheck.tools?
- dnscheck.tools is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
- What is dnscheck.tools's SEO score?
- dnscheck.tools scored 70/100 for SEO in the latest analysis (fair).
- What is dnscheck.tools's overall website score?
- dnscheck.tools has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Has dnscheck.tools's score changed over time?
- dnscheck.tools's overall score has improved by 3 points (from 82 to 85) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card