Subnet Calculator

Calculate network addresses, broadcast addresses, and host ranges for IP subnets

subnetcalculatorcidrnetworkipmaskaddressrange
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Subnet Information

Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Total Hosts
256
Usable Hosts
254

IP Classification

ClassC
TypePrivate
CIDR/24

Binary Representation

IP Address

11000000.10101000.00000001.00000000

Subnet Mask

11111111.11111111.11111111.00000000

Common Subnet Masks

CIDRSubnet MaskUsable Hosts
/8255.0.0.016,777,214
/16255.255.0.065,534
/24255.255.255.0254
/25255.255.255.128126
/26255.255.255.19262
/27255.255.255.22430
/28255.255.255.24014
/29255.255.255.2486
/30255.255.255.2522
/31255.255.255.2540
/32255.255.255.2550

Subnet Calculator Tips

• CIDR notation represents the number of network bits in the subnet mask

• Private IP ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16

• The first address is the network address, the last is the broadcast address

• Usable hosts = Total hosts - 2 (network and broadcast addresses)