75.2.40.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (75.2.40.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 75.2.40.255 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 | 75.2.40.128/25 |
| Network Address | 75.2.40.128 |
| Broadcast Address | 75.2.40.255 |
| 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 | 75.2.40.129 |
| Last Usable IP | 75.2.40.254 |
| Network (Hex) | 0x4B022880 |
| Broadcast (Hex) | 0x4B0228FF |
| 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 75.2.40.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 75.2.40.128/26 | 75.2.40.128 | 75.2.40.129 | 75.2.40.190 | 75.2.40.191 | 62 |
| 2 | 75.2.40.192/26 | 75.2.40.192 | 75.2.40.193 | 75.2.40.254 | 75.2.40.255 | 62 |
Split 75.2.40.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 75.2.40.128/27 | 75.2.40.128 | 75.2.40.129 | 75.2.40.158 | 75.2.40.159 | 30 |
| 2 | 75.2.40.160/27 | 75.2.40.160 | 75.2.40.161 | 75.2.40.190 | 75.2.40.191 | 30 |
| 3 | 75.2.40.192/27 | 75.2.40.192 | 75.2.40.193 | 75.2.40.222 | 75.2.40.223 | 30 |
| 4 | 75.2.40.224/27 | 75.2.40.224 | 75.2.40.225 | 75.2.40.254 | 75.2.40.255 | 30 |
Split 75.2.40.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 75.2.40.128/28 | 75.2.40.128 | 75.2.40.129 | 75.2.40.142 | 75.2.40.143 | 14 |
| 2 | 75.2.40.144/28 | 75.2.40.144 | 75.2.40.145 | 75.2.40.158 | 75.2.40.159 | 14 |
| 3 | 75.2.40.160/28 | 75.2.40.160 | 75.2.40.161 | 75.2.40.174 | 75.2.40.175 | 14 |
| 4 | 75.2.40.176/28 | 75.2.40.176 | 75.2.40.177 | 75.2.40.190 | 75.2.40.191 | 14 |
| 5 | 75.2.40.192/28 | 75.2.40.192 | 75.2.40.193 | 75.2.40.206 | 75.2.40.207 | 14 |
| 6 | 75.2.40.208/28 | 75.2.40.208 | 75.2.40.209 | 75.2.40.222 | 75.2.40.223 | 14 |
| 7 | 75.2.40.224/28 | 75.2.40.224 | 75.2.40.225 | 75.2.40.238 | 75.2.40.239 | 14 |
| 8 | 75.2.40.240/28 | 75.2.40.240 | 75.2.40.241 | 75.2.40.254 | 75.2.40.255 | 14 |
Split 75.2.40.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 75.2.40.128/29 | 75.2.40.128 | 75.2.40.129 | 75.2.40.134 | 75.2.40.135 | 6 |
| 2 | 75.2.40.136/29 | 75.2.40.136 | 75.2.40.137 | 75.2.40.142 | 75.2.40.143 | 6 |
| 3 | 75.2.40.144/29 | 75.2.40.144 | 75.2.40.145 | 75.2.40.150 | 75.2.40.151 | 6 |
| 4 | 75.2.40.152/29 | 75.2.40.152 | 75.2.40.153 | 75.2.40.158 | 75.2.40.159 | 6 |
| 5 | 75.2.40.160/29 | 75.2.40.160 | 75.2.40.161 | 75.2.40.166 | 75.2.40.167 | 6 |
| 6 | 75.2.40.168/29 | 75.2.40.168 | 75.2.40.169 | 75.2.40.174 | 75.2.40.175 | 6 |
| 7 | 75.2.40.176/29 | 75.2.40.176 | 75.2.40.177 | 75.2.40.182 | 75.2.40.183 | 6 |
| 8 | 75.2.40.184/29 | 75.2.40.184 | 75.2.40.185 | 75.2.40.190 | 75.2.40.191 | 6 |
| 9 | 75.2.40.192/29 | 75.2.40.192 | 75.2.40.193 | 75.2.40.198 | 75.2.40.199 | 6 |
| 10 | 75.2.40.200/29 | 75.2.40.200 | 75.2.40.201 | 75.2.40.206 | 75.2.40.207 | 6 |
| 11 | 75.2.40.208/29 | 75.2.40.208 | 75.2.40.209 | 75.2.40.214 | 75.2.40.215 | 6 |
| 12 | 75.2.40.216/29 | 75.2.40.216 | 75.2.40.217 | 75.2.40.222 | 75.2.40.223 | 6 |
| 13 | 75.2.40.224/29 | 75.2.40.224 | 75.2.40.225 | 75.2.40.230 | 75.2.40.231 | 6 |
| 14 | 75.2.40.232/29 | 75.2.40.232 | 75.2.40.233 | 75.2.40.238 | 75.2.40.239 | 6 |
| 15 | 75.2.40.240/29 | 75.2.40.240 | 75.2.40.241 | 75.2.40.246 | 75.2.40.247 | 6 |
| 16 | 75.2.40.248/29 | 75.2.40.248 | 75.2.40.249 | 75.2.40.254 | 75.2.40.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.