Inspect, dissect, edit, encode, and rebuild URLs and query strings in real time.
IP Subnet Calculator
Calculate CIDR subnets, mask values & usable hosts
IPv6 Address Helper
Expand, compress, validate & parse IPv6 addresses
DNS Record Decoder
Parse DNS queries and responses from HEX streams
HTTP Status Code Glossary
Searchable reference for all HTTP status codes
User-Agent Parser
Parse browser UA strings and detect client specs