Calculate subnet masks, network addresses, broadcast addresses, and host ranges

Convert CIDR notation (e.g. /24) to subnet mask format (255.255.255.0)

Check if one IP set contains another

Convert MAC addresses between formats and identify manufacturer from OUI database

Generate DHCP Option 43 for wireless controller discovery (Cisco, Aruba, Ruckus, UniFi)

Compare DNS resolver speeds across multiple providers to find the fastest for your location