158.252.51.128/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (158.252.51.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 158.252.51.255 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 | 158.252.51.128/25 |
| Network Address | 158.252.51.128 |
| Broadcast Address | 158.252.51.255 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class B |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 158.252.51.129 |
| Last Usable IP | 158.252.51.254 |
| Network (Hex) | 0x9EFC3380 |
| Broadcast (Hex) | 0x9EFC33FF |
| 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 158.252.51.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 158.252.51.128/26 | 158.252.51.128 | 158.252.51.129 | 158.252.51.190 | 158.252.51.191 | 62 |
| 2 | 158.252.51.192/26 | 158.252.51.192 | 158.252.51.193 | 158.252.51.254 | 158.252.51.255 | 62 |
Split 158.252.51.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 158.252.51.128/27 | 158.252.51.128 | 158.252.51.129 | 158.252.51.158 | 158.252.51.159 | 30 |
| 2 | 158.252.51.160/27 | 158.252.51.160 | 158.252.51.161 | 158.252.51.190 | 158.252.51.191 | 30 |
| 3 | 158.252.51.192/27 | 158.252.51.192 | 158.252.51.193 | 158.252.51.222 | 158.252.51.223 | 30 |
| 4 | 158.252.51.224/27 | 158.252.51.224 | 158.252.51.225 | 158.252.51.254 | 158.252.51.255 | 30 |
Split 158.252.51.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 158.252.51.128/28 | 158.252.51.128 | 158.252.51.129 | 158.252.51.142 | 158.252.51.143 | 14 |
| 2 | 158.252.51.144/28 | 158.252.51.144 | 158.252.51.145 | 158.252.51.158 | 158.252.51.159 | 14 |
| 3 | 158.252.51.160/28 | 158.252.51.160 | 158.252.51.161 | 158.252.51.174 | 158.252.51.175 | 14 |
| 4 | 158.252.51.176/28 | 158.252.51.176 | 158.252.51.177 | 158.252.51.190 | 158.252.51.191 | 14 |
| 5 | 158.252.51.192/28 | 158.252.51.192 | 158.252.51.193 | 158.252.51.206 | 158.252.51.207 | 14 |
| 6 | 158.252.51.208/28 | 158.252.51.208 | 158.252.51.209 | 158.252.51.222 | 158.252.51.223 | 14 |
| 7 | 158.252.51.224/28 | 158.252.51.224 | 158.252.51.225 | 158.252.51.238 | 158.252.51.239 | 14 |
| 8 | 158.252.51.240/28 | 158.252.51.240 | 158.252.51.241 | 158.252.51.254 | 158.252.51.255 | 14 |
Split 158.252.51.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 158.252.51.128/29 | 158.252.51.128 | 158.252.51.129 | 158.252.51.134 | 158.252.51.135 | 6 |
| 2 | 158.252.51.136/29 | 158.252.51.136 | 158.252.51.137 | 158.252.51.142 | 158.252.51.143 | 6 |
| 3 | 158.252.51.144/29 | 158.252.51.144 | 158.252.51.145 | 158.252.51.150 | 158.252.51.151 | 6 |
| 4 | 158.252.51.152/29 | 158.252.51.152 | 158.252.51.153 | 158.252.51.158 | 158.252.51.159 | 6 |
| 5 | 158.252.51.160/29 | 158.252.51.160 | 158.252.51.161 | 158.252.51.166 | 158.252.51.167 | 6 |
| 6 | 158.252.51.168/29 | 158.252.51.168 | 158.252.51.169 | 158.252.51.174 | 158.252.51.175 | 6 |
| 7 | 158.252.51.176/29 | 158.252.51.176 | 158.252.51.177 | 158.252.51.182 | 158.252.51.183 | 6 |
| 8 | 158.252.51.184/29 | 158.252.51.184 | 158.252.51.185 | 158.252.51.190 | 158.252.51.191 | 6 |
| 9 | 158.252.51.192/29 | 158.252.51.192 | 158.252.51.193 | 158.252.51.198 | 158.252.51.199 | 6 |
| 10 | 158.252.51.200/29 | 158.252.51.200 | 158.252.51.201 | 158.252.51.206 | 158.252.51.207 | 6 |
| 11 | 158.252.51.208/29 | 158.252.51.208 | 158.252.51.209 | 158.252.51.214 | 158.252.51.215 | 6 |
| 12 | 158.252.51.216/29 | 158.252.51.216 | 158.252.51.217 | 158.252.51.222 | 158.252.51.223 | 6 |
| 13 | 158.252.51.224/29 | 158.252.51.224 | 158.252.51.225 | 158.252.51.230 | 158.252.51.231 | 6 |
| 14 | 158.252.51.232/29 | 158.252.51.232 | 158.252.51.233 | 158.252.51.238 | 158.252.51.239 | 6 |
| 15 | 158.252.51.240/29 | 158.252.51.240 | 158.252.51.241 | 158.252.51.246 | 158.252.51.247 | 6 |
| 16 | 158.252.51.248/29 | 158.252.51.248 | 158.252.51.249 | 158.252.51.254 | 158.252.51.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.