A free, no-signup toolbox for network administrators, developers, and IT professionals. Instant utilities that run right in your browser — no installs, no accounts, no waiting.
Instantly view your public IP address, along with basic location and network details.
Query DNS records for any domain — A, AAAA, MX, TXT, CNAME, and more.
Test connectivity and measure latency to any host or IP address in real time.
Calculate network ranges, VLSM splits, host counts, and broadcast addresses instantly.
Check domain resolution across multiple public DNS resolvers to verify propagation.
Check DNS resolution, reverse DNS, geolocation, and response time for any host.
Check whether two IP subnets or CIDR ranges overlap or conflict.
Create strong, cryptographically random passwords with full control over length and character sets.
Identify the manufacturer of a network device from its MAC address or OUI.
Decode any cron schedule into plain English and see its next run times.
Decode a JSON Web Token to inspect its header, payload, and expiration.
Encode or decode text using Base64 or URL-safe percent-encoding.
Test regular expressions live against sample text with match highlighting.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text, instantly.
Compare two blocks of text or config files and highlight the differences.