99.77.139.128/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (99.77.139.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 99.77.139.255 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 | 99.77.139.128/25 |
| Network Address | 99.77.139.128 |
| Broadcast Address | 99.77.139.255 |
| 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 | 99.77.139.129 |
| Last Usable IP | 99.77.139.254 |
| Network (Hex) | 0x634D8B80 |
| Broadcast (Hex) | 0x634D8BFF |
| 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 99.77.139.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 99.77.139.128/26 | 99.77.139.128 | 99.77.139.129 | 99.77.139.190 | 99.77.139.191 | 62 |
| 2 | 99.77.139.192/26 | 99.77.139.192 | 99.77.139.193 | 99.77.139.254 | 99.77.139.255 | 62 |
Split 99.77.139.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 99.77.139.128/27 | 99.77.139.128 | 99.77.139.129 | 99.77.139.158 | 99.77.139.159 | 30 |
| 2 | 99.77.139.160/27 | 99.77.139.160 | 99.77.139.161 | 99.77.139.190 | 99.77.139.191 | 30 |
| 3 | 99.77.139.192/27 | 99.77.139.192 | 99.77.139.193 | 99.77.139.222 | 99.77.139.223 | 30 |
| 4 | 99.77.139.224/27 | 99.77.139.224 | 99.77.139.225 | 99.77.139.254 | 99.77.139.255 | 30 |
Split 99.77.139.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 99.77.139.128/28 | 99.77.139.128 | 99.77.139.129 | 99.77.139.142 | 99.77.139.143 | 14 |
| 2 | 99.77.139.144/28 | 99.77.139.144 | 99.77.139.145 | 99.77.139.158 | 99.77.139.159 | 14 |
| 3 | 99.77.139.160/28 | 99.77.139.160 | 99.77.139.161 | 99.77.139.174 | 99.77.139.175 | 14 |
| 4 | 99.77.139.176/28 | 99.77.139.176 | 99.77.139.177 | 99.77.139.190 | 99.77.139.191 | 14 |
| 5 | 99.77.139.192/28 | 99.77.139.192 | 99.77.139.193 | 99.77.139.206 | 99.77.139.207 | 14 |
| 6 | 99.77.139.208/28 | 99.77.139.208 | 99.77.139.209 | 99.77.139.222 | 99.77.139.223 | 14 |
| 7 | 99.77.139.224/28 | 99.77.139.224 | 99.77.139.225 | 99.77.139.238 | 99.77.139.239 | 14 |
| 8 | 99.77.139.240/28 | 99.77.139.240 | 99.77.139.241 | 99.77.139.254 | 99.77.139.255 | 14 |
Split 99.77.139.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 99.77.139.128/29 | 99.77.139.128 | 99.77.139.129 | 99.77.139.134 | 99.77.139.135 | 6 |
| 2 | 99.77.139.136/29 | 99.77.139.136 | 99.77.139.137 | 99.77.139.142 | 99.77.139.143 | 6 |
| 3 | 99.77.139.144/29 | 99.77.139.144 | 99.77.139.145 | 99.77.139.150 | 99.77.139.151 | 6 |
| 4 | 99.77.139.152/29 | 99.77.139.152 | 99.77.139.153 | 99.77.139.158 | 99.77.139.159 | 6 |
| 5 | 99.77.139.160/29 | 99.77.139.160 | 99.77.139.161 | 99.77.139.166 | 99.77.139.167 | 6 |
| 6 | 99.77.139.168/29 | 99.77.139.168 | 99.77.139.169 | 99.77.139.174 | 99.77.139.175 | 6 |
| 7 | 99.77.139.176/29 | 99.77.139.176 | 99.77.139.177 | 99.77.139.182 | 99.77.139.183 | 6 |
| 8 | 99.77.139.184/29 | 99.77.139.184 | 99.77.139.185 | 99.77.139.190 | 99.77.139.191 | 6 |
| 9 | 99.77.139.192/29 | 99.77.139.192 | 99.77.139.193 | 99.77.139.198 | 99.77.139.199 | 6 |
| 10 | 99.77.139.200/29 | 99.77.139.200 | 99.77.139.201 | 99.77.139.206 | 99.77.139.207 | 6 |
| 11 | 99.77.139.208/29 | 99.77.139.208 | 99.77.139.209 | 99.77.139.214 | 99.77.139.215 | 6 |
| 12 | 99.77.139.216/29 | 99.77.139.216 | 99.77.139.217 | 99.77.139.222 | 99.77.139.223 | 6 |
| 13 | 99.77.139.224/29 | 99.77.139.224 | 99.77.139.225 | 99.77.139.230 | 99.77.139.231 | 6 |
| 14 | 99.77.139.232/29 | 99.77.139.232 | 99.77.139.233 | 99.77.139.238 | 99.77.139.239 | 6 |
| 15 | 99.77.139.240/29 | 99.77.139.240 | 99.77.139.241 | 99.77.139.246 | 99.77.139.247 | 6 |
| 16 | 99.77.139.248/29 | 99.77.139.248 | 99.77.139.249 | 99.77.139.254 | 99.77.139.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.