28.213.64.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (28.213.64.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 28.213.64.255 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 | 28.213.64.128/25 |
| Network Address | 28.213.64.128 |
| Broadcast Address | 28.213.64.255 |
| 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 | 28.213.64.129 |
| Last Usable IP | 28.213.64.254 |
| Network (Hex) | 0x1CD54080 |
| Broadcast (Hex) | 0x1CD540FF |
| 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 28.213.64.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.213.64.128/26 | 28.213.64.128 | 28.213.64.129 | 28.213.64.190 | 28.213.64.191 | 62 |
| 2 | 28.213.64.192/26 | 28.213.64.192 | 28.213.64.193 | 28.213.64.254 | 28.213.64.255 | 62 |
Split 28.213.64.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.213.64.128/27 | 28.213.64.128 | 28.213.64.129 | 28.213.64.158 | 28.213.64.159 | 30 |
| 2 | 28.213.64.160/27 | 28.213.64.160 | 28.213.64.161 | 28.213.64.190 | 28.213.64.191 | 30 |
| 3 | 28.213.64.192/27 | 28.213.64.192 | 28.213.64.193 | 28.213.64.222 | 28.213.64.223 | 30 |
| 4 | 28.213.64.224/27 | 28.213.64.224 | 28.213.64.225 | 28.213.64.254 | 28.213.64.255 | 30 |
Split 28.213.64.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.213.64.128/28 | 28.213.64.128 | 28.213.64.129 | 28.213.64.142 | 28.213.64.143 | 14 |
| 2 | 28.213.64.144/28 | 28.213.64.144 | 28.213.64.145 | 28.213.64.158 | 28.213.64.159 | 14 |
| 3 | 28.213.64.160/28 | 28.213.64.160 | 28.213.64.161 | 28.213.64.174 | 28.213.64.175 | 14 |
| 4 | 28.213.64.176/28 | 28.213.64.176 | 28.213.64.177 | 28.213.64.190 | 28.213.64.191 | 14 |
| 5 | 28.213.64.192/28 | 28.213.64.192 | 28.213.64.193 | 28.213.64.206 | 28.213.64.207 | 14 |
| 6 | 28.213.64.208/28 | 28.213.64.208 | 28.213.64.209 | 28.213.64.222 | 28.213.64.223 | 14 |
| 7 | 28.213.64.224/28 | 28.213.64.224 | 28.213.64.225 | 28.213.64.238 | 28.213.64.239 | 14 |
| 8 | 28.213.64.240/28 | 28.213.64.240 | 28.213.64.241 | 28.213.64.254 | 28.213.64.255 | 14 |
Split 28.213.64.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.213.64.128/29 | 28.213.64.128 | 28.213.64.129 | 28.213.64.134 | 28.213.64.135 | 6 |
| 2 | 28.213.64.136/29 | 28.213.64.136 | 28.213.64.137 | 28.213.64.142 | 28.213.64.143 | 6 |
| 3 | 28.213.64.144/29 | 28.213.64.144 | 28.213.64.145 | 28.213.64.150 | 28.213.64.151 | 6 |
| 4 | 28.213.64.152/29 | 28.213.64.152 | 28.213.64.153 | 28.213.64.158 | 28.213.64.159 | 6 |
| 5 | 28.213.64.160/29 | 28.213.64.160 | 28.213.64.161 | 28.213.64.166 | 28.213.64.167 | 6 |
| 6 | 28.213.64.168/29 | 28.213.64.168 | 28.213.64.169 | 28.213.64.174 | 28.213.64.175 | 6 |
| 7 | 28.213.64.176/29 | 28.213.64.176 | 28.213.64.177 | 28.213.64.182 | 28.213.64.183 | 6 |
| 8 | 28.213.64.184/29 | 28.213.64.184 | 28.213.64.185 | 28.213.64.190 | 28.213.64.191 | 6 |
| 9 | 28.213.64.192/29 | 28.213.64.192 | 28.213.64.193 | 28.213.64.198 | 28.213.64.199 | 6 |
| 10 | 28.213.64.200/29 | 28.213.64.200 | 28.213.64.201 | 28.213.64.206 | 28.213.64.207 | 6 |
| 11 | 28.213.64.208/29 | 28.213.64.208 | 28.213.64.209 | 28.213.64.214 | 28.213.64.215 | 6 |
| 12 | 28.213.64.216/29 | 28.213.64.216 | 28.213.64.217 | 28.213.64.222 | 28.213.64.223 | 6 |
| 13 | 28.213.64.224/29 | 28.213.64.224 | 28.213.64.225 | 28.213.64.230 | 28.213.64.231 | 6 |
| 14 | 28.213.64.232/29 | 28.213.64.232 | 28.213.64.233 | 28.213.64.238 | 28.213.64.239 | 6 |
| 15 | 28.213.64.240/29 | 28.213.64.240 | 28.213.64.241 | 28.213.64.246 | 28.213.64.247 | 6 |
| 16 | 28.213.64.248/29 | 28.213.64.248 | 28.213.64.249 | 28.213.64.254 | 28.213.64.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.