205.251.221.128/26
PublicClass C — /26 prefix — 62 usable hosts
Network address — the base address of the block (205.251.221.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 205.251.221.191 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 | 205.251.221.128/26 |
| Network Address | 205.251.221.128 |
| Broadcast Address | 205.251.221.191 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class C |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 205.251.221.129 |
| Last Usable IP | 205.251.221.190 |
| Network (Hex) | 0xCDFBDD80 |
| Broadcast (Hex) | 0xCDFBDDBF |
| 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 205.251.221.128/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 205.251.221.128/27 | 205.251.221.128 | 205.251.221.129 | 205.251.221.158 | 205.251.221.159 | 30 |
| 2 | 205.251.221.160/27 | 205.251.221.160 | 205.251.221.161 | 205.251.221.190 | 205.251.221.191 | 30 |
Split 205.251.221.128/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 205.251.221.128/28 | 205.251.221.128 | 205.251.221.129 | 205.251.221.142 | 205.251.221.143 | 14 |
| 2 | 205.251.221.144/28 | 205.251.221.144 | 205.251.221.145 | 205.251.221.158 | 205.251.221.159 | 14 |
| 3 | 205.251.221.160/28 | 205.251.221.160 | 205.251.221.161 | 205.251.221.174 | 205.251.221.175 | 14 |
| 4 | 205.251.221.176/28 | 205.251.221.176 | 205.251.221.177 | 205.251.221.190 | 205.251.221.191 | 14 |
Split 205.251.221.128/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 205.251.221.128/29 | 205.251.221.128 | 205.251.221.129 | 205.251.221.134 | 205.251.221.135 | 6 |
| 2 | 205.251.221.136/29 | 205.251.221.136 | 205.251.221.137 | 205.251.221.142 | 205.251.221.143 | 6 |
| 3 | 205.251.221.144/29 | 205.251.221.144 | 205.251.221.145 | 205.251.221.150 | 205.251.221.151 | 6 |
| 4 | 205.251.221.152/29 | 205.251.221.152 | 205.251.221.153 | 205.251.221.158 | 205.251.221.159 | 6 |
| 5 | 205.251.221.160/29 | 205.251.221.160 | 205.251.221.161 | 205.251.221.166 | 205.251.221.167 | 6 |
| 6 | 205.251.221.168/29 | 205.251.221.168 | 205.251.221.169 | 205.251.221.174 | 205.251.221.175 | 6 |
| 7 | 205.251.221.176/29 | 205.251.221.176 | 205.251.221.177 | 205.251.221.182 | 205.251.221.183 | 6 |
| 8 | 205.251.221.184/29 | 205.251.221.184 | 205.251.221.185 | 205.251.221.190 | 205.251.221.191 | 6 |
Split 205.251.221.128/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 205.251.221.128/30 | 205.251.221.128 | 205.251.221.129 | 205.251.221.130 | 205.251.221.131 | 2 |
| 2 | 205.251.221.132/30 | 205.251.221.132 | 205.251.221.133 | 205.251.221.134 | 205.251.221.135 | 2 |
| 3 | 205.251.221.136/30 | 205.251.221.136 | 205.251.221.137 | 205.251.221.138 | 205.251.221.139 | 2 |
| 4 | 205.251.221.140/30 | 205.251.221.140 | 205.251.221.141 | 205.251.221.142 | 205.251.221.143 | 2 |
| 5 | 205.251.221.144/30 | 205.251.221.144 | 205.251.221.145 | 205.251.221.146 | 205.251.221.147 | 2 |
| 6 | 205.251.221.148/30 | 205.251.221.148 | 205.251.221.149 | 205.251.221.150 | 205.251.221.151 | 2 |
| 7 | 205.251.221.152/30 | 205.251.221.152 | 205.251.221.153 | 205.251.221.154 | 205.251.221.155 | 2 |
| 8 | 205.251.221.156/30 | 205.251.221.156 | 205.251.221.157 | 205.251.221.158 | 205.251.221.159 | 2 |
| 9 | 205.251.221.160/30 | 205.251.221.160 | 205.251.221.161 | 205.251.221.162 | 205.251.221.163 | 2 |
| 10 | 205.251.221.164/30 | 205.251.221.164 | 205.251.221.165 | 205.251.221.166 | 205.251.221.167 | 2 |
| 11 | 205.251.221.168/30 | 205.251.221.168 | 205.251.221.169 | 205.251.221.170 | 205.251.221.171 | 2 |
| 12 | 205.251.221.172/30 | 205.251.221.172 | 205.251.221.173 | 205.251.221.174 | 205.251.221.175 | 2 |
| 13 | 205.251.221.176/30 | 205.251.221.176 | 205.251.221.177 | 205.251.221.178 | 205.251.221.179 | 2 |
| 14 | 205.251.221.180/30 | 205.251.221.180 | 205.251.221.181 | 205.251.221.182 | 205.251.221.183 | 2 |
| 15 | 205.251.221.184/30 | 205.251.221.184 | 205.251.221.185 | 205.251.221.186 | 205.251.221.187 | 2 |
| 16 | 205.251.221.188/30 | 205.251.221.188 | 205.251.221.189 | 205.251.221.190 | 205.251.221.191 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.