CIDR Calculator
Calculate IP address ranges and subnet information
Enter IP Address and CIDR
IP Address
CIDR Bits (/24)
/0
/24
/32
Common Subnets
/8 (Class A)
/16 (Class B)
/24 (Class C)
/25 (128 hosts)
/26 (64 hosts)
/27 (32 hosts)
/28 (16 hosts)
/29 (8 hosts)
/30 (4 hosts)
/31 (P2P link)
/32 (Single host)
Calculate