justyourcalculatorIP Subnet Calculator
Network, broadcast, host range and masks for any subnet.
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IP Subnet Calculator
IPv4 and IPv6 subnet, range and host count
You can also type CIDR, like 10.0.0.0/8.
Network
192.168.1.0/24
254 usable hosts
- IP address
- 192.168.1.130
- Network address
- 192.168.1.0
- Broadcast address
- 192.168.1.255
- Usable host range
- 192.168.1.1 - 192.168.1.254
- Total addresses
- 256
- Usable hosts
- 254
- Subnet mask
- 255.255.255.0
- Wildcard mask
- 0.0.0.255
- IP class
- C
- Type
- Private (RFC 1918)
- Integer / hex
- 3232235906 / 0xC0A80182
- In-addr.arpa
- 130.1.168.192.in-addr.arpa
Usable hosts exclude the network and broadcast addresses.
| Binary | |
|---|---|
| IP address | 11000000.10101000.00000001.10000010 |
| Subnet mask | 11111111.11111111.11111111.00000000 |
| Network | 11000000.10101000.00000001.00000000 |
| Broadcast | 11000000.10101000.00000001.11111111 |
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How the ip subnet calculator works
A CIDR prefix like /24 says how many leading bits of the address identify the network. The subnet mask has those bits set to 1; ANDing the IP with the mask gives the network address, and setting the remaining host bits to 1 gives the broadcast address.
A /n IPv4 subnet has 2^(32 - n) addresses. Two are reserved (network and broadcast), so a /24 has 256 addresses and 254 usable hosts. The wildcard mask is the inverse of the subnet mask, used in router ACLs.
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
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