Network tools

Network diagnostics and lookup tools.

Query common DNS record types for a public hostname from our server.

Extract hostnames from text, URLs, and domain lists directly in your browser.

View useful response headers from a public HTTP or HTTPS URL.

Check the HTTP status, response time, and redirects for a public URL.

Resolve a hostname or inspect an explicit IP address with reverse DNS and classification.

Inspect the redirect chain and final destination of a public HTTP URL.

Fetch and evaluate a robots.txt rule for a selected user-agent and path.

View entries and last modification dates from a public XML sitemap or sitemap index.

Inspect the TLS certificate, validity dates, issuer, and protocol for a public hostname.

Clean and normalize URL lists locally while preserving useful query parameters.

Build trackable campaign URLs with UTM parameters while preserving existing queries.