248.128.141.128/25
PublicClass E (Reserved) — /25 prefix — 126 usable hosts
Network address — the base address of the block (248.128.141.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 248.128.141.255 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 | 248.128.141.128/25 |
| Network Address | 248.128.141.128 |
| Broadcast Address | 248.128.141.255 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class E (Reserved) |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 248.128.141.129 |
| Last Usable IP | 248.128.141.254 |
| Network (Hex) | 0xF8808D80 |
| Broadcast (Hex) | 0xF8808DFF |
| 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 248.128.141.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 248.128.141.128/26 | 248.128.141.128 | 248.128.141.129 | 248.128.141.190 | 248.128.141.191 | 62 |
| 2 | 248.128.141.192/26 | 248.128.141.192 | 248.128.141.193 | 248.128.141.254 | 248.128.141.255 | 62 |
Split 248.128.141.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 248.128.141.128/27 | 248.128.141.128 | 248.128.141.129 | 248.128.141.158 | 248.128.141.159 | 30 |
| 2 | 248.128.141.160/27 | 248.128.141.160 | 248.128.141.161 | 248.128.141.190 | 248.128.141.191 | 30 |
| 3 | 248.128.141.192/27 | 248.128.141.192 | 248.128.141.193 | 248.128.141.222 | 248.128.141.223 | 30 |
| 4 | 248.128.141.224/27 | 248.128.141.224 | 248.128.141.225 | 248.128.141.254 | 248.128.141.255 | 30 |
Split 248.128.141.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 248.128.141.128/28 | 248.128.141.128 | 248.128.141.129 | 248.128.141.142 | 248.128.141.143 | 14 |
| 2 | 248.128.141.144/28 | 248.128.141.144 | 248.128.141.145 | 248.128.141.158 | 248.128.141.159 | 14 |
| 3 | 248.128.141.160/28 | 248.128.141.160 | 248.128.141.161 | 248.128.141.174 | 248.128.141.175 | 14 |
| 4 | 248.128.141.176/28 | 248.128.141.176 | 248.128.141.177 | 248.128.141.190 | 248.128.141.191 | 14 |
| 5 | 248.128.141.192/28 | 248.128.141.192 | 248.128.141.193 | 248.128.141.206 | 248.128.141.207 | 14 |
| 6 | 248.128.141.208/28 | 248.128.141.208 | 248.128.141.209 | 248.128.141.222 | 248.128.141.223 | 14 |
| 7 | 248.128.141.224/28 | 248.128.141.224 | 248.128.141.225 | 248.128.141.238 | 248.128.141.239 | 14 |
| 8 | 248.128.141.240/28 | 248.128.141.240 | 248.128.141.241 | 248.128.141.254 | 248.128.141.255 | 14 |
Split 248.128.141.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 248.128.141.128/29 | 248.128.141.128 | 248.128.141.129 | 248.128.141.134 | 248.128.141.135 | 6 |
| 2 | 248.128.141.136/29 | 248.128.141.136 | 248.128.141.137 | 248.128.141.142 | 248.128.141.143 | 6 |
| 3 | 248.128.141.144/29 | 248.128.141.144 | 248.128.141.145 | 248.128.141.150 | 248.128.141.151 | 6 |
| 4 | 248.128.141.152/29 | 248.128.141.152 | 248.128.141.153 | 248.128.141.158 | 248.128.141.159 | 6 |
| 5 | 248.128.141.160/29 | 248.128.141.160 | 248.128.141.161 | 248.128.141.166 | 248.128.141.167 | 6 |
| 6 | 248.128.141.168/29 | 248.128.141.168 | 248.128.141.169 | 248.128.141.174 | 248.128.141.175 | 6 |
| 7 | 248.128.141.176/29 | 248.128.141.176 | 248.128.141.177 | 248.128.141.182 | 248.128.141.183 | 6 |
| 8 | 248.128.141.184/29 | 248.128.141.184 | 248.128.141.185 | 248.128.141.190 | 248.128.141.191 | 6 |
| 9 | 248.128.141.192/29 | 248.128.141.192 | 248.128.141.193 | 248.128.141.198 | 248.128.141.199 | 6 |
| 10 | 248.128.141.200/29 | 248.128.141.200 | 248.128.141.201 | 248.128.141.206 | 248.128.141.207 | 6 |
| 11 | 248.128.141.208/29 | 248.128.141.208 | 248.128.141.209 | 248.128.141.214 | 248.128.141.215 | 6 |
| 12 | 248.128.141.216/29 | 248.128.141.216 | 248.128.141.217 | 248.128.141.222 | 248.128.141.223 | 6 |
| 13 | 248.128.141.224/29 | 248.128.141.224 | 248.128.141.225 | 248.128.141.230 | 248.128.141.231 | 6 |
| 14 | 248.128.141.232/29 | 248.128.141.232 | 248.128.141.233 | 248.128.141.238 | 248.128.141.239 | 6 |
| 15 | 248.128.141.240/29 | 248.128.141.240 | 248.128.141.241 | 248.128.141.246 | 248.128.141.247 | 6 |
| 16 | 248.128.141.248/29 | 248.128.141.248 | 248.128.141.249 | 248.128.141.254 | 248.128.141.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.