9.237.221.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (9.237.221.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 9.237.221.255 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 | 9.237.221.128/25 |
| Network Address | 9.237.221.128 |
| Broadcast Address | 9.237.221.255 |
| 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 | 9.237.221.129 |
| Last Usable IP | 9.237.221.254 |
| Network (Hex) | 0x09EDDD80 |
| Broadcast (Hex) | 0x09EDDDFF |
| 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 9.237.221.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 9.237.221.128/26 | 9.237.221.128 | 9.237.221.129 | 9.237.221.190 | 9.237.221.191 | 62 |
| 2 | 9.237.221.192/26 | 9.237.221.192 | 9.237.221.193 | 9.237.221.254 | 9.237.221.255 | 62 |
Split 9.237.221.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 9.237.221.128/27 | 9.237.221.128 | 9.237.221.129 | 9.237.221.158 | 9.237.221.159 | 30 |
| 2 | 9.237.221.160/27 | 9.237.221.160 | 9.237.221.161 | 9.237.221.190 | 9.237.221.191 | 30 |
| 3 | 9.237.221.192/27 | 9.237.221.192 | 9.237.221.193 | 9.237.221.222 | 9.237.221.223 | 30 |
| 4 | 9.237.221.224/27 | 9.237.221.224 | 9.237.221.225 | 9.237.221.254 | 9.237.221.255 | 30 |
Split 9.237.221.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 9.237.221.128/28 | 9.237.221.128 | 9.237.221.129 | 9.237.221.142 | 9.237.221.143 | 14 |
| 2 | 9.237.221.144/28 | 9.237.221.144 | 9.237.221.145 | 9.237.221.158 | 9.237.221.159 | 14 |
| 3 | 9.237.221.160/28 | 9.237.221.160 | 9.237.221.161 | 9.237.221.174 | 9.237.221.175 | 14 |
| 4 | 9.237.221.176/28 | 9.237.221.176 | 9.237.221.177 | 9.237.221.190 | 9.237.221.191 | 14 |
| 5 | 9.237.221.192/28 | 9.237.221.192 | 9.237.221.193 | 9.237.221.206 | 9.237.221.207 | 14 |
| 6 | 9.237.221.208/28 | 9.237.221.208 | 9.237.221.209 | 9.237.221.222 | 9.237.221.223 | 14 |
| 7 | 9.237.221.224/28 | 9.237.221.224 | 9.237.221.225 | 9.237.221.238 | 9.237.221.239 | 14 |
| 8 | 9.237.221.240/28 | 9.237.221.240 | 9.237.221.241 | 9.237.221.254 | 9.237.221.255 | 14 |
Split 9.237.221.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 9.237.221.128/29 | 9.237.221.128 | 9.237.221.129 | 9.237.221.134 | 9.237.221.135 | 6 |
| 2 | 9.237.221.136/29 | 9.237.221.136 | 9.237.221.137 | 9.237.221.142 | 9.237.221.143 | 6 |
| 3 | 9.237.221.144/29 | 9.237.221.144 | 9.237.221.145 | 9.237.221.150 | 9.237.221.151 | 6 |
| 4 | 9.237.221.152/29 | 9.237.221.152 | 9.237.221.153 | 9.237.221.158 | 9.237.221.159 | 6 |
| 5 | 9.237.221.160/29 | 9.237.221.160 | 9.237.221.161 | 9.237.221.166 | 9.237.221.167 | 6 |
| 6 | 9.237.221.168/29 | 9.237.221.168 | 9.237.221.169 | 9.237.221.174 | 9.237.221.175 | 6 |
| 7 | 9.237.221.176/29 | 9.237.221.176 | 9.237.221.177 | 9.237.221.182 | 9.237.221.183 | 6 |
| 8 | 9.237.221.184/29 | 9.237.221.184 | 9.237.221.185 | 9.237.221.190 | 9.237.221.191 | 6 |
| 9 | 9.237.221.192/29 | 9.237.221.192 | 9.237.221.193 | 9.237.221.198 | 9.237.221.199 | 6 |
| 10 | 9.237.221.200/29 | 9.237.221.200 | 9.237.221.201 | 9.237.221.206 | 9.237.221.207 | 6 |
| 11 | 9.237.221.208/29 | 9.237.221.208 | 9.237.221.209 | 9.237.221.214 | 9.237.221.215 | 6 |
| 12 | 9.237.221.216/29 | 9.237.221.216 | 9.237.221.217 | 9.237.221.222 | 9.237.221.223 | 6 |
| 13 | 9.237.221.224/29 | 9.237.221.224 | 9.237.221.225 | 9.237.221.230 | 9.237.221.231 | 6 |
| 14 | 9.237.221.232/29 | 9.237.221.232 | 9.237.221.233 | 9.237.221.238 | 9.237.221.239 | 6 |
| 15 | 9.237.221.240/29 | 9.237.221.240 | 9.237.221.241 | 9.237.221.246 | 9.237.221.247 | 6 |
| 16 | 9.237.221.248/29 | 9.237.221.248 | 9.237.221.249 | 9.237.221.254 | 9.237.221.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.