IPv4 subnet calculator

CIDR → network, broadcast, host range, wildcard mask, and subnet splitting

Parameters

IP address

CIDR prefix

Split into subnets (pcs)

Result

Network192.168.1.0/26

Mask255.255.255.192

Wildcard0.0.0.63

Broadcast192.168.1.63

Host range192.168.1.1–192.168.1.62

Usable hosts62,00 / 64,00

4 subnets /28:

192.168.1.0/2814 hosts

192.168.1.16/2814 hosts

192.168.1.32/2814 hosts

192.168.1.48/2814 hosts

/31 is for point-to-point links (RFC 3021, both addresses usable), /32 is a single host. Private ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16. A /16 VPC is usually carved into /24 subnets — 256 of them with 251 usable each (AWS reserves 5 addresses).

About Subnet

Subnet — free online tool on usefulhub.cloud. IT Tools: Developer utilities. Use our tools without registration or installing software. All calculations happen in your browser — your data is never sent to a server.