IPv4 CIDR Calculator

A very complete CIDR Subnet calculator with Hex conversion and easy network range and subnet mask adjustement.

IPv4 Network Calculator

 

Network Class (n): Class A: 1.0.0.0 - 127.255.255.255 Class B: 128.0.0.0 - 191.255.255.255 Class C: 192.0.0.0 - 223.255.255.255 Multicast: 224.0.0.0 - 239.255.255.255 Other: 240.0.0.0 - 255.255.255.255 Netmask Bits (s+n): Subnet Bits (s): # of subnets: # of hosts: IP Bit Map: Host Address (decimal):   Decimal   Hexadecimal IP: . . . . . . Netmask (n+s): . . .   . . . Subnet Mask (s): . . . . . . Network: . . .   . . . Broadcast: . . .   . . .         IP Address Range:  --