Subnet Calculator

Apply the subnet mask to the IP address to find the network address, then set every host bit to 1 for the broadcast address — every address in between is a usable host. For example, 192.168.10.50/24 gives a network of 192.168.10.0, a broadcast of 192.168.10.255, and 254 usable hosts.

Yes. In binary, 255.255.255.0 is twenty-four 1s followed by eight 0s (11111111.11111111.11111111.00000000) — and 24 network bits is exactly what /24 means in CIDR notation.

254. A /24 holds 256 addresses in total; set aside the network address and the broadcast address and you're left with 254 usable hosts.

Two. A /31 has just two addresses, and RFC 3021 lets both be assigned to the ends of a point-to-point link — there's no separate network or broadcast address in that case.

A subnet mask marks the network part of an address with 1-bits; a wildcard mask is its mirror image, where 1-bits mark the parts that can vary. For a /24, the subnet mask is 255.255.255.0 and the wildcard mask is 0.0.0.255 — you'll see wildcard masks in firewall rules and router access lists.

Each site keeps its own subnet, and routing rules forward traffic bound for a remote subnet across the tunnel — so careful subnet planning is what keeps IP ranges from colliding. With a site-to-site VPN, CloudConnexa manages those routes for you, so the connected sites behave as one network.

Give each network a distinct subnet — that's exactly what this calculator helps you plan. When renumbering isn't an option (most routers ship with 192.168.1.0/24, so collisions are common), a Cloud VPN like CloudConnexa can route traffic between the networks even though their subnets overlap.

Yes. Overlapping subnets normally cause routing conflicts, but CloudConnexa can interconnect sites even when their IP subnets overlap — no renumbering required. Its full-mesh topology connects each site to every other and manages the routes for you.