51.237.26.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (51.237.26.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 51.237.26.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 51.237.26.128/25 |
| Network Address | 51.237.26.128 |
| Broadcast Address | 51.237.26.255 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class A |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 51.237.26.129 |
| Last Usable IP | 51.237.26.254 |
| Network (Hex) | 0x33ED1A80 |
| Broadcast (Hex) | 0x33ED1AFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 51.237.26.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.26.128/26 | 51.237.26.128 | 51.237.26.129 | 51.237.26.190 | 51.237.26.191 | 62 |
| 2 | 51.237.26.192/26 | 51.237.26.192 | 51.237.26.193 | 51.237.26.254 | 51.237.26.255 | 62 |
Split 51.237.26.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.26.128/27 | 51.237.26.128 | 51.237.26.129 | 51.237.26.158 | 51.237.26.159 | 30 |
| 2 | 51.237.26.160/27 | 51.237.26.160 | 51.237.26.161 | 51.237.26.190 | 51.237.26.191 | 30 |
| 3 | 51.237.26.192/27 | 51.237.26.192 | 51.237.26.193 | 51.237.26.222 | 51.237.26.223 | 30 |
| 4 | 51.237.26.224/27 | 51.237.26.224 | 51.237.26.225 | 51.237.26.254 | 51.237.26.255 | 30 |
Split 51.237.26.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.26.128/28 | 51.237.26.128 | 51.237.26.129 | 51.237.26.142 | 51.237.26.143 | 14 |
| 2 | 51.237.26.144/28 | 51.237.26.144 | 51.237.26.145 | 51.237.26.158 | 51.237.26.159 | 14 |
| 3 | 51.237.26.160/28 | 51.237.26.160 | 51.237.26.161 | 51.237.26.174 | 51.237.26.175 | 14 |
| 4 | 51.237.26.176/28 | 51.237.26.176 | 51.237.26.177 | 51.237.26.190 | 51.237.26.191 | 14 |
| 5 | 51.237.26.192/28 | 51.237.26.192 | 51.237.26.193 | 51.237.26.206 | 51.237.26.207 | 14 |
| 6 | 51.237.26.208/28 | 51.237.26.208 | 51.237.26.209 | 51.237.26.222 | 51.237.26.223 | 14 |
| 7 | 51.237.26.224/28 | 51.237.26.224 | 51.237.26.225 | 51.237.26.238 | 51.237.26.239 | 14 |
| 8 | 51.237.26.240/28 | 51.237.26.240 | 51.237.26.241 | 51.237.26.254 | 51.237.26.255 | 14 |
Split 51.237.26.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.26.128/29 | 51.237.26.128 | 51.237.26.129 | 51.237.26.134 | 51.237.26.135 | 6 |
| 2 | 51.237.26.136/29 | 51.237.26.136 | 51.237.26.137 | 51.237.26.142 | 51.237.26.143 | 6 |
| 3 | 51.237.26.144/29 | 51.237.26.144 | 51.237.26.145 | 51.237.26.150 | 51.237.26.151 | 6 |
| 4 | 51.237.26.152/29 | 51.237.26.152 | 51.237.26.153 | 51.237.26.158 | 51.237.26.159 | 6 |
| 5 | 51.237.26.160/29 | 51.237.26.160 | 51.237.26.161 | 51.237.26.166 | 51.237.26.167 | 6 |
| 6 | 51.237.26.168/29 | 51.237.26.168 | 51.237.26.169 | 51.237.26.174 | 51.237.26.175 | 6 |
| 7 | 51.237.26.176/29 | 51.237.26.176 | 51.237.26.177 | 51.237.26.182 | 51.237.26.183 | 6 |
| 8 | 51.237.26.184/29 | 51.237.26.184 | 51.237.26.185 | 51.237.26.190 | 51.237.26.191 | 6 |
| 9 | 51.237.26.192/29 | 51.237.26.192 | 51.237.26.193 | 51.237.26.198 | 51.237.26.199 | 6 |
| 10 | 51.237.26.200/29 | 51.237.26.200 | 51.237.26.201 | 51.237.26.206 | 51.237.26.207 | 6 |
| 11 | 51.237.26.208/29 | 51.237.26.208 | 51.237.26.209 | 51.237.26.214 | 51.237.26.215 | 6 |
| 12 | 51.237.26.216/29 | 51.237.26.216 | 51.237.26.217 | 51.237.26.222 | 51.237.26.223 | 6 |
| 13 | 51.237.26.224/29 | 51.237.26.224 | 51.237.26.225 | 51.237.26.230 | 51.237.26.231 | 6 |
| 14 | 51.237.26.232/29 | 51.237.26.232 | 51.237.26.233 | 51.237.26.238 | 51.237.26.239 | 6 |
| 15 | 51.237.26.240/29 | 51.237.26.240 | 51.237.26.241 | 51.237.26.246 | 51.237.26.247 | 6 |
| 16 | 51.237.26.248/29 | 51.237.26.248 | 51.237.26.249 | 51.237.26.254 | 51.237.26.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.