HTTP Headers Checker
Only query what is needed
Network diagnostics use the domain, URL, or IP you enter to run the requested check and show actionable results.
Quick workflow
- Enter a domain, URL, IP address, or DNS value.
- Run the check and review warnings or records.
- Use the suggested follow-up tools to verify related settings.
Useful tip
For DNS changes, check records first, then propagation, and finally related email or SSL settings.
Suggested next steps
Continue with tools that often pair well with this task.
X-Robots-Tag Header Planner
Generate X-Robots-Tag headers for PDFs, images, downloads, and other non-HTML assets before launch
SSL Certificate Checker
Check HTTPS reachability and inspect pasted PEM certificate text.
Open Graph Preview
Preview social sharing cards and generate OG meta tags
Canonical URL Checker
Extract canonical links from HTML and flag common SEO canonical mistakes.
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CORS Config Generator
Generate CORS snippets from allowed origins, methods, headers, credentials, and preflight settings.
DNS Propagation Checker
Check DNS records through public DNS-over-HTTPS resolvers.
CSP Header Generator
Generate Content Security Policy headers with common directives, presets, report-only mode, and security warnings.
IP Checker
Query IP address and location
DNS Change Planner
Plan DNS record changes with old values, new values, TTL timing, validation, and rollback steps.
DNS Lookup
Query domain DNS records
Lorem Ipsum Generator
Generate placeholder text
Parameter Indexing Policy Builder
Turn UTM, sorting, filtering, pagination, and session parameters into canonical, noindex, and robots indexing policies before launch.