Subnet calculator
FreeNetwork, broadcast, hosts, mask and wildcard. With step-by-step guide, map, diagnosis and configuration.
Examples: 192.168.1.130/26 · 10.0.0.5 255.255.255.0 · 172.16.0.0/12
192.168.10.128/28
Privada (RFC 1918)/28Class C (historical)
Address map
192.168.10.0/24 holds 16 /28 networks. Yours is number 9. Click another one to explore it.
192.168.10.0192.168.10.255
Inside 192.168.10.128/28
Network 192.168.10.12814 hosts 192.168.10.129 – 192.168.10.142Broadcast 192.168.10.143
192.168.10.128 is the network address: it is not assigned to devices
In binary
Network bits in blue; host bits in orange.
| IP | 192.168.10.128 | 11000000.10101000.00001010.10000000 |
| Mask | 255.255.255.240 | 11111111.11111111.11111111.11110000 |
| Network | 192.168.10.128 | 11000000.10101000.00001010.10000000 |
| Broadcast | 192.168.10.143 | 11000000.10101000.00001010.10001111 |
Tools
4 /30 subnets of 4 addresses (2 usable hosts each).
| # | Subnet | First host | Last host | Broadcast |
|---|---|---|---|---|
| 1 | 192.168.10.128/30 | 192.168.10.129 | 192.168.10.130 | 192.168.10.131 |
| 2 | 192.168.10.132/30 | 192.168.10.133 | 192.168.10.134 | 192.168.10.135 |
| 3 | 192.168.10.136/30 | 192.168.10.137 | 192.168.10.138 | 192.168.10.139 |
| 4 | 192.168.10.140/30 | 192.168.10.141 | 192.168.10.142 | 192.168.10.143 |