Subnet engineer's workbench — IPv4 analysis · subnet splitting · supernetting · IPv6 tools
IP Address — Binary
Subnet Mask — Binary
Analyze a CIDR above first, then split the network into N equal subnets.
| # | CIDR | Network | Broadcast | Host Range | Hosts |
|---|
Enter CIDR blocks (one per line or comma-separated) to find their common supernet.
Common Supernet
Expanded
Compressed
| Prefix | Subnet Mask | Hosts | Notes |
|---|---|---|---|
| /8 | 255.0.0.0 | 16,777,214 | private 10.0.0.0/8 |
| /12 | 255.240.0.0 | 1,048,574 | private 172.16.0.0/12 |
| /16 | 255.255.0.0 | 65,534 | private 192.168.0.0/16 |
| /24 | 255.255.255.0 | 254 | Common LAN segment |
| /25 | 255.255.255.128 | 126 | Half of /24 |
| /26 | 255.255.255.192 | 62 | Quarter of /24 |
| /27 | 255.255.255.224 | 30 | Eighth of /24 |
| /28 | 255.255.255.240 | 14 | Common VLAN |
| /29 | 255.255.255.248 | 6 | Small segment |
| /30 | 255.255.255.252 | 2 | Point-to-point link |
| /31 | 255.255.255.254 | 2 | RFC 3021 P2P |
| /32 | 255.255.255.255 | 1 | Host route |