1.73.87.128/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (1.73.87.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 1.73.87.191 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 1.73.87.128/26 |
| Network Address | 1.73.87.128 |
| Broadcast Address | 1.73.87.191 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class A |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 1.73.87.129 |
| Last Usable IP | 1.73.87.190 |
| Network (Hex) | 0x01495780 |
| Broadcast (Hex) | 0x014957BF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 1.73.87.128/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.73.87.128/27 | 1.73.87.128 | 1.73.87.129 | 1.73.87.158 | 1.73.87.159 | 30 |
| 2 | 1.73.87.160/27 | 1.73.87.160 | 1.73.87.161 | 1.73.87.190 | 1.73.87.191 | 30 |
Split 1.73.87.128/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.73.87.128/28 | 1.73.87.128 | 1.73.87.129 | 1.73.87.142 | 1.73.87.143 | 14 |
| 2 | 1.73.87.144/28 | 1.73.87.144 | 1.73.87.145 | 1.73.87.158 | 1.73.87.159 | 14 |
| 3 | 1.73.87.160/28 | 1.73.87.160 | 1.73.87.161 | 1.73.87.174 | 1.73.87.175 | 14 |
| 4 | 1.73.87.176/28 | 1.73.87.176 | 1.73.87.177 | 1.73.87.190 | 1.73.87.191 | 14 |
Split 1.73.87.128/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.73.87.128/29 | 1.73.87.128 | 1.73.87.129 | 1.73.87.134 | 1.73.87.135 | 6 |
| 2 | 1.73.87.136/29 | 1.73.87.136 | 1.73.87.137 | 1.73.87.142 | 1.73.87.143 | 6 |
| 3 | 1.73.87.144/29 | 1.73.87.144 | 1.73.87.145 | 1.73.87.150 | 1.73.87.151 | 6 |
| 4 | 1.73.87.152/29 | 1.73.87.152 | 1.73.87.153 | 1.73.87.158 | 1.73.87.159 | 6 |
| 5 | 1.73.87.160/29 | 1.73.87.160 | 1.73.87.161 | 1.73.87.166 | 1.73.87.167 | 6 |
| 6 | 1.73.87.168/29 | 1.73.87.168 | 1.73.87.169 | 1.73.87.174 | 1.73.87.175 | 6 |
| 7 | 1.73.87.176/29 | 1.73.87.176 | 1.73.87.177 | 1.73.87.182 | 1.73.87.183 | 6 |
| 8 | 1.73.87.184/29 | 1.73.87.184 | 1.73.87.185 | 1.73.87.190 | 1.73.87.191 | 6 |
Split 1.73.87.128/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.73.87.128/30 | 1.73.87.128 | 1.73.87.129 | 1.73.87.130 | 1.73.87.131 | 2 |
| 2 | 1.73.87.132/30 | 1.73.87.132 | 1.73.87.133 | 1.73.87.134 | 1.73.87.135 | 2 |
| 3 | 1.73.87.136/30 | 1.73.87.136 | 1.73.87.137 | 1.73.87.138 | 1.73.87.139 | 2 |
| 4 | 1.73.87.140/30 | 1.73.87.140 | 1.73.87.141 | 1.73.87.142 | 1.73.87.143 | 2 |
| 5 | 1.73.87.144/30 | 1.73.87.144 | 1.73.87.145 | 1.73.87.146 | 1.73.87.147 | 2 |
| 6 | 1.73.87.148/30 | 1.73.87.148 | 1.73.87.149 | 1.73.87.150 | 1.73.87.151 | 2 |
| 7 | 1.73.87.152/30 | 1.73.87.152 | 1.73.87.153 | 1.73.87.154 | 1.73.87.155 | 2 |
| 8 | 1.73.87.156/30 | 1.73.87.156 | 1.73.87.157 | 1.73.87.158 | 1.73.87.159 | 2 |
| 9 | 1.73.87.160/30 | 1.73.87.160 | 1.73.87.161 | 1.73.87.162 | 1.73.87.163 | 2 |
| 10 | 1.73.87.164/30 | 1.73.87.164 | 1.73.87.165 | 1.73.87.166 | 1.73.87.167 | 2 |
| 11 | 1.73.87.168/30 | 1.73.87.168 | 1.73.87.169 | 1.73.87.170 | 1.73.87.171 | 2 |
| 12 | 1.73.87.172/30 | 1.73.87.172 | 1.73.87.173 | 1.73.87.174 | 1.73.87.175 | 2 |
| 13 | 1.73.87.176/30 | 1.73.87.176 | 1.73.87.177 | 1.73.87.178 | 1.73.87.179 | 2 |
| 14 | 1.73.87.180/30 | 1.73.87.180 | 1.73.87.181 | 1.73.87.182 | 1.73.87.183 | 2 |
| 15 | 1.73.87.184/30 | 1.73.87.184 | 1.73.87.185 | 1.73.87.186 | 1.73.87.187 | 2 |
| 16 | 1.73.87.188/30 | 1.73.87.188 | 1.73.87.189 | 1.73.87.190 | 1.73.87.191 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.