IPv4 Subnet Masks have variable lengths and can use various designations for different Class networks A, B & C.
The following tables include subnetting for Class A, B, and C networks, as well as Network IDs, host ranges and IP broadcast addresses with emphasis on Class C subnets.
How to use the Ubiquiti airLink tool to design and plan Wireless Network Links
Ubiquiti simulation tool to assist with wireless Network Link planning and design. It uses geographic coordinates using maps overlaid with line-of-sight and Fresnel zone clearances which account for the earth's curvature, link budget, expected capacity, signal levels, and network coverage.