IP Subnet Calculator

IPv4 address count from CIDR prefix.

Choose an IP subnet workflowInspect an IPv4 network and broadcast range or the capacity of an IPv6 prefix.

2 options

Network Class

Subnet prefix length

IP Address octet 1

IP Address octet 2

IP Address octet 3

IP Address octet 4

IPV4 SUBNET256 addresses

Network 192.168.1.0/24 · broadcast 192.168.1.255 · mask 255.255.255.0 · 254 usable hosts

Estimate based on the values shown

Formula checkedNetwork Class validates the classful minimum; Subnet applies a 32-bit prefix mask to the entered IP Address. IPv6 capacity is 2^(128-prefix).

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