100.97.252.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (100.97.252.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 100.97.252.255 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 | 100.97.252.128/25 |
| Network Address | 100.97.252.128 |
| Broadcast Address | 100.97.252.255 |
| 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 | 100.97.252.129 |
| Last Usable IP | 100.97.252.254 |
| Network (Hex) | 0x6461FC80 |
| Broadcast (Hex) | 0x6461FCFF |
| 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 100.97.252.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.97.252.128/26 | 100.97.252.128 | 100.97.252.129 | 100.97.252.190 | 100.97.252.191 | 62 |
| 2 | 100.97.252.192/26 | 100.97.252.192 | 100.97.252.193 | 100.97.252.254 | 100.97.252.255 | 62 |
Split 100.97.252.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.97.252.128/27 | 100.97.252.128 | 100.97.252.129 | 100.97.252.158 | 100.97.252.159 | 30 |
| 2 | 100.97.252.160/27 | 100.97.252.160 | 100.97.252.161 | 100.97.252.190 | 100.97.252.191 | 30 |
| 3 | 100.97.252.192/27 | 100.97.252.192 | 100.97.252.193 | 100.97.252.222 | 100.97.252.223 | 30 |
| 4 | 100.97.252.224/27 | 100.97.252.224 | 100.97.252.225 | 100.97.252.254 | 100.97.252.255 | 30 |
Split 100.97.252.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.97.252.128/28 | 100.97.252.128 | 100.97.252.129 | 100.97.252.142 | 100.97.252.143 | 14 |
| 2 | 100.97.252.144/28 | 100.97.252.144 | 100.97.252.145 | 100.97.252.158 | 100.97.252.159 | 14 |
| 3 | 100.97.252.160/28 | 100.97.252.160 | 100.97.252.161 | 100.97.252.174 | 100.97.252.175 | 14 |
| 4 | 100.97.252.176/28 | 100.97.252.176 | 100.97.252.177 | 100.97.252.190 | 100.97.252.191 | 14 |
| 5 | 100.97.252.192/28 | 100.97.252.192 | 100.97.252.193 | 100.97.252.206 | 100.97.252.207 | 14 |
| 6 | 100.97.252.208/28 | 100.97.252.208 | 100.97.252.209 | 100.97.252.222 | 100.97.252.223 | 14 |
| 7 | 100.97.252.224/28 | 100.97.252.224 | 100.97.252.225 | 100.97.252.238 | 100.97.252.239 | 14 |
| 8 | 100.97.252.240/28 | 100.97.252.240 | 100.97.252.241 | 100.97.252.254 | 100.97.252.255 | 14 |
Split 100.97.252.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.97.252.128/29 | 100.97.252.128 | 100.97.252.129 | 100.97.252.134 | 100.97.252.135 | 6 |
| 2 | 100.97.252.136/29 | 100.97.252.136 | 100.97.252.137 | 100.97.252.142 | 100.97.252.143 | 6 |
| 3 | 100.97.252.144/29 | 100.97.252.144 | 100.97.252.145 | 100.97.252.150 | 100.97.252.151 | 6 |
| 4 | 100.97.252.152/29 | 100.97.252.152 | 100.97.252.153 | 100.97.252.158 | 100.97.252.159 | 6 |
| 5 | 100.97.252.160/29 | 100.97.252.160 | 100.97.252.161 | 100.97.252.166 | 100.97.252.167 | 6 |
| 6 | 100.97.252.168/29 | 100.97.252.168 | 100.97.252.169 | 100.97.252.174 | 100.97.252.175 | 6 |
| 7 | 100.97.252.176/29 | 100.97.252.176 | 100.97.252.177 | 100.97.252.182 | 100.97.252.183 | 6 |
| 8 | 100.97.252.184/29 | 100.97.252.184 | 100.97.252.185 | 100.97.252.190 | 100.97.252.191 | 6 |
| 9 | 100.97.252.192/29 | 100.97.252.192 | 100.97.252.193 | 100.97.252.198 | 100.97.252.199 | 6 |
| 10 | 100.97.252.200/29 | 100.97.252.200 | 100.97.252.201 | 100.97.252.206 | 100.97.252.207 | 6 |
| 11 | 100.97.252.208/29 | 100.97.252.208 | 100.97.252.209 | 100.97.252.214 | 100.97.252.215 | 6 |
| 12 | 100.97.252.216/29 | 100.97.252.216 | 100.97.252.217 | 100.97.252.222 | 100.97.252.223 | 6 |
| 13 | 100.97.252.224/29 | 100.97.252.224 | 100.97.252.225 | 100.97.252.230 | 100.97.252.231 | 6 |
| 14 | 100.97.252.232/29 | 100.97.252.232 | 100.97.252.233 | 100.97.252.238 | 100.97.252.239 | 6 |
| 15 | 100.97.252.240/29 | 100.97.252.240 | 100.97.252.241 | 100.97.252.246 | 100.97.252.247 | 6 |
| 16 | 100.97.252.248/29 | 100.97.252.248 | 100.97.252.249 | 100.97.252.254 | 100.97.252.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.