172.32.123.64/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (172.32.123.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 172.32.123.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 172.32.123.64/26 |
| Network Address | 172.32.123.64 |
| Broadcast Address | 172.32.123.127 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class B |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 172.32.123.65 |
| Last Usable IP | 172.32.123.126 |
| Network (Hex) | 0xAC207B40 |
| Broadcast (Hex) | 0xAC207B7F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 172.32.123.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.32.123.64/27 | 172.32.123.64 | 172.32.123.65 | 172.32.123.94 | 172.32.123.95 | 30 |
| 2 | 172.32.123.96/27 | 172.32.123.96 | 172.32.123.97 | 172.32.123.126 | 172.32.123.127 | 30 |
Split 172.32.123.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.32.123.64/28 | 172.32.123.64 | 172.32.123.65 | 172.32.123.78 | 172.32.123.79 | 14 |
| 2 | 172.32.123.80/28 | 172.32.123.80 | 172.32.123.81 | 172.32.123.94 | 172.32.123.95 | 14 |
| 3 | 172.32.123.96/28 | 172.32.123.96 | 172.32.123.97 | 172.32.123.110 | 172.32.123.111 | 14 |
| 4 | 172.32.123.112/28 | 172.32.123.112 | 172.32.123.113 | 172.32.123.126 | 172.32.123.127 | 14 |
Split 172.32.123.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.32.123.64/29 | 172.32.123.64 | 172.32.123.65 | 172.32.123.70 | 172.32.123.71 | 6 |
| 2 | 172.32.123.72/29 | 172.32.123.72 | 172.32.123.73 | 172.32.123.78 | 172.32.123.79 | 6 |
| 3 | 172.32.123.80/29 | 172.32.123.80 | 172.32.123.81 | 172.32.123.86 | 172.32.123.87 | 6 |
| 4 | 172.32.123.88/29 | 172.32.123.88 | 172.32.123.89 | 172.32.123.94 | 172.32.123.95 | 6 |
| 5 | 172.32.123.96/29 | 172.32.123.96 | 172.32.123.97 | 172.32.123.102 | 172.32.123.103 | 6 |
| 6 | 172.32.123.104/29 | 172.32.123.104 | 172.32.123.105 | 172.32.123.110 | 172.32.123.111 | 6 |
| 7 | 172.32.123.112/29 | 172.32.123.112 | 172.32.123.113 | 172.32.123.118 | 172.32.123.119 | 6 |
| 8 | 172.32.123.120/29 | 172.32.123.120 | 172.32.123.121 | 172.32.123.126 | 172.32.123.127 | 6 |
Split 172.32.123.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.32.123.64/30 | 172.32.123.64 | 172.32.123.65 | 172.32.123.66 | 172.32.123.67 | 2 |
| 2 | 172.32.123.68/30 | 172.32.123.68 | 172.32.123.69 | 172.32.123.70 | 172.32.123.71 | 2 |
| 3 | 172.32.123.72/30 | 172.32.123.72 | 172.32.123.73 | 172.32.123.74 | 172.32.123.75 | 2 |
| 4 | 172.32.123.76/30 | 172.32.123.76 | 172.32.123.77 | 172.32.123.78 | 172.32.123.79 | 2 |
| 5 | 172.32.123.80/30 | 172.32.123.80 | 172.32.123.81 | 172.32.123.82 | 172.32.123.83 | 2 |
| 6 | 172.32.123.84/30 | 172.32.123.84 | 172.32.123.85 | 172.32.123.86 | 172.32.123.87 | 2 |
| 7 | 172.32.123.88/30 | 172.32.123.88 | 172.32.123.89 | 172.32.123.90 | 172.32.123.91 | 2 |
| 8 | 172.32.123.92/30 | 172.32.123.92 | 172.32.123.93 | 172.32.123.94 | 172.32.123.95 | 2 |
| 9 | 172.32.123.96/30 | 172.32.123.96 | 172.32.123.97 | 172.32.123.98 | 172.32.123.99 | 2 |
| 10 | 172.32.123.100/30 | 172.32.123.100 | 172.32.123.101 | 172.32.123.102 | 172.32.123.103 | 2 |
| 11 | 172.32.123.104/30 | 172.32.123.104 | 172.32.123.105 | 172.32.123.106 | 172.32.123.107 | 2 |
| 12 | 172.32.123.108/30 | 172.32.123.108 | 172.32.123.109 | 172.32.123.110 | 172.32.123.111 | 2 |
| 13 | 172.32.123.112/30 | 172.32.123.112 | 172.32.123.113 | 172.32.123.114 | 172.32.123.115 | 2 |
| 14 | 172.32.123.116/30 | 172.32.123.116 | 172.32.123.117 | 172.32.123.118 | 172.32.123.119 | 2 |
| 15 | 172.32.123.120/30 | 172.32.123.120 | 172.32.123.121 | 172.32.123.122 | 172.32.123.123 | 2 |
| 16 | 172.32.123.124/30 | 172.32.123.124 | 172.32.123.125 | 172.32.123.126 | 172.32.123.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.