IP Range Calculator

Calculate subnet parameters: CIDR, mask, host count, address range

Free Tool CIDR

IP Address

CIDR / Mask

Network Address

Broadcast Address

First Host

Last Host

Subnet Mask

Wildcard Mask

CIDR Notation

Total Hosts

Binary Representation

                                        IP:
                                        
                                        Mask:

/8 255.0.0.0

/16 255.255.0.0

/24 255.255.255.0

/25 255.255.255.128

/26 255.255.255.192

/27 255.255.255.224

/28 255.255.255.240

/29 255.255.255.248

/30 255.255.255.252

/32 255.255.255.255

IP Network Classes

Class A

/8 (255.0.0.0)

16,777,214 hosts

Class B

/16 (255.255.0.0)

65,534 hosts

Class C

/24 (255.255.255.0)

254 hosts