Tools for network analysis and testing
Validate, classify and convert IPv4/IPv6 addresses, subnets and reverse DNS
Test network latency to various endpoints and services
Test API endpoints with custom headers, parameters, and request body
Generate robots.txt files and XML sitemaps for your website
Calculate IPv4/IPv6 network and broadcast addresses, host ranges, masks, and subnet splits from CIDR.
Look up A, AAAA, MX, TXT, CNAME, NS, SOA, and CAA records via DNS-over-HTTPS.
Parse a User-Agent string into browser, engine, operating system, device, and bot signals.
Break a URL into its parts and inspect, edit, and rebuild its query parameters live.
Connect to a WebSocket endpoint, send messages, and watch a live log of frames and connection state.
Inspect HTTP archive requests, timings, payloads, and sensitive data, then export a reviewed sanitised HAR locally.
Simulate browser CORS preflights and HTTP cache freshness, revalidation, Vary, and stale-response decisions.
