Networking
IP, CIDR, subnets, DNS, and HTTP references.
7 tools
HTTP Status Codes
Complete reference for all HTTP status codes with descriptions and use cases.
MIME Types Reference
Search and browse all MIME types and their associated file extensions.
CIDR Calculator
Calculate IP ranges, subnet masks, and broadcast addresses from CIDR notation.
IP Address Validator
Validate IPv4 and IPv6 addresses and get detailed information.
Port Reference
Look up well-known TCP/UDP ports and their associated services.
Device Information
NewView detailed browser, device, screen, and hardware information.
Chmod Calculator
NewCalculate Unix file permissions with a visual toggle grid and symbolic/octal notation.