187.151.79.128/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (187.151.79.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 187.151.79.255 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 | 187.151.79.128/25 |
| Network Address | 187.151.79.128 |
| Broadcast Address | 187.151.79.255 |
| 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 | 187.151.79.129 |
| Last Usable IP | 187.151.79.254 |
| Network (Hex) | 0xBB974F80 |
| Broadcast (Hex) | 0xBB974FFF |
| 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 187.151.79.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 187.151.79.128/26 | 187.151.79.128 | 187.151.79.129 | 187.151.79.190 | 187.151.79.191 | 62 |
| 2 | 187.151.79.192/26 | 187.151.79.192 | 187.151.79.193 | 187.151.79.254 | 187.151.79.255 | 62 |
Split 187.151.79.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 187.151.79.128/27 | 187.151.79.128 | 187.151.79.129 | 187.151.79.158 | 187.151.79.159 | 30 |
| 2 | 187.151.79.160/27 | 187.151.79.160 | 187.151.79.161 | 187.151.79.190 | 187.151.79.191 | 30 |
| 3 | 187.151.79.192/27 | 187.151.79.192 | 187.151.79.193 | 187.151.79.222 | 187.151.79.223 | 30 |
| 4 | 187.151.79.224/27 | 187.151.79.224 | 187.151.79.225 | 187.151.79.254 | 187.151.79.255 | 30 |
Split 187.151.79.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 187.151.79.128/28 | 187.151.79.128 | 187.151.79.129 | 187.151.79.142 | 187.151.79.143 | 14 |
| 2 | 187.151.79.144/28 | 187.151.79.144 | 187.151.79.145 | 187.151.79.158 | 187.151.79.159 | 14 |
| 3 | 187.151.79.160/28 | 187.151.79.160 | 187.151.79.161 | 187.151.79.174 | 187.151.79.175 | 14 |
| 4 | 187.151.79.176/28 | 187.151.79.176 | 187.151.79.177 | 187.151.79.190 | 187.151.79.191 | 14 |
| 5 | 187.151.79.192/28 | 187.151.79.192 | 187.151.79.193 | 187.151.79.206 | 187.151.79.207 | 14 |
| 6 | 187.151.79.208/28 | 187.151.79.208 | 187.151.79.209 | 187.151.79.222 | 187.151.79.223 | 14 |
| 7 | 187.151.79.224/28 | 187.151.79.224 | 187.151.79.225 | 187.151.79.238 | 187.151.79.239 | 14 |
| 8 | 187.151.79.240/28 | 187.151.79.240 | 187.151.79.241 | 187.151.79.254 | 187.151.79.255 | 14 |
Split 187.151.79.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 187.151.79.128/29 | 187.151.79.128 | 187.151.79.129 | 187.151.79.134 | 187.151.79.135 | 6 |
| 2 | 187.151.79.136/29 | 187.151.79.136 | 187.151.79.137 | 187.151.79.142 | 187.151.79.143 | 6 |
| 3 | 187.151.79.144/29 | 187.151.79.144 | 187.151.79.145 | 187.151.79.150 | 187.151.79.151 | 6 |
| 4 | 187.151.79.152/29 | 187.151.79.152 | 187.151.79.153 | 187.151.79.158 | 187.151.79.159 | 6 |
| 5 | 187.151.79.160/29 | 187.151.79.160 | 187.151.79.161 | 187.151.79.166 | 187.151.79.167 | 6 |
| 6 | 187.151.79.168/29 | 187.151.79.168 | 187.151.79.169 | 187.151.79.174 | 187.151.79.175 | 6 |
| 7 | 187.151.79.176/29 | 187.151.79.176 | 187.151.79.177 | 187.151.79.182 | 187.151.79.183 | 6 |
| 8 | 187.151.79.184/29 | 187.151.79.184 | 187.151.79.185 | 187.151.79.190 | 187.151.79.191 | 6 |
| 9 | 187.151.79.192/29 | 187.151.79.192 | 187.151.79.193 | 187.151.79.198 | 187.151.79.199 | 6 |
| 10 | 187.151.79.200/29 | 187.151.79.200 | 187.151.79.201 | 187.151.79.206 | 187.151.79.207 | 6 |
| 11 | 187.151.79.208/29 | 187.151.79.208 | 187.151.79.209 | 187.151.79.214 | 187.151.79.215 | 6 |
| 12 | 187.151.79.216/29 | 187.151.79.216 | 187.151.79.217 | 187.151.79.222 | 187.151.79.223 | 6 |
| 13 | 187.151.79.224/29 | 187.151.79.224 | 187.151.79.225 | 187.151.79.230 | 187.151.79.231 | 6 |
| 14 | 187.151.79.232/29 | 187.151.79.232 | 187.151.79.233 | 187.151.79.238 | 187.151.79.239 | 6 |
| 15 | 187.151.79.240/29 | 187.151.79.240 | 187.151.79.241 | 187.151.79.246 | 187.151.79.247 | 6 |
| 16 | 187.151.79.248/29 | 187.151.79.248 | 187.151.79.249 | 187.151.79.254 | 187.151.79.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.