Network Tools
IP calculators, subnet tools, HTTP references and more
IP Address Calculator
Calculate network address, broadcast, and host ranges.
Subnet Calculator
Calculate CIDR subnets, masks, and IP ranges.
CIDR to IP Range
Convert CIDR notation to full IP address range.
MAC Address Generator
Generate random valid IEEE-compliant MAC addresses.
Port Numbers Reference
Searchable reference for common network port numbers.
HTTP Status Codes Reference
Complete searchable HTTP status code reference guide.
MIME Types Reference
Complete MIME types reference for file extensions.
URL Parser
Parse URL into protocol, host, path, query and fragment.
Query String Parser
Parse URL query string parameters into key-value pairs.
User Agent Parser
Parse and identify browser user agent strings.
Cookie Header Parser
Parse HTTP Cookie header strings into key-value pairs.
WebSocket URL Generator
Generate wss:// and ws:// WebSocket connection URLs.
CORS Policy Checker
Check and validate CORS configuration for web APIs.
Bandwidth & Speed Calculator
Calculate file transfer time at different network speeds.
DNS Record Types Guide
Comprehensive guide to DNS record types and their uses.
HTTP Headers Reference
Complete HTTP request and response headers reference.
TCP vs UDP Reference
Compare TCP and UDP protocols with use case guide.
SSL/TLS Guide
SSL/TLS certificates, protocols, and setup guide.
IP Address Classes
Guide to IP address classes A, B, C, D and their ranges.
Private IP Ranges Reference
Reference for private IP address ranges (RFC 1918).
CDN Selection Guide
Guide to choosing the right CDN provider for your needs.
Localhost & Loopback Guide
Guide to localhost, 127.0.0.1, and loopback addresses.
Network Speed Calculator
Calculate download/upload time for files at any speed.
IPv4 vs IPv6 Comparison
Detailed comparison of IPv4 and IPv6 protocols.
Firewall Rules Guide
Guide to writing and understanding firewall rules.