21.252.101.128/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (21.252.101.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 21.252.101.191 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 | 21.252.101.128/26 |
| Network Address | 21.252.101.128 |
| Broadcast Address | 21.252.101.191 |
| 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 | 21.252.101.129 |
| Last Usable IP | 21.252.101.190 |
| Network (Hex) | 0x15FC6580 |
| Broadcast (Hex) | 0x15FC65BF |
| 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 21.252.101.128/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.101.128/27 | 21.252.101.128 | 21.252.101.129 | 21.252.101.158 | 21.252.101.159 | 30 |
| 2 | 21.252.101.160/27 | 21.252.101.160 | 21.252.101.161 | 21.252.101.190 | 21.252.101.191 | 30 |
Split 21.252.101.128/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.101.128/28 | 21.252.101.128 | 21.252.101.129 | 21.252.101.142 | 21.252.101.143 | 14 |
| 2 | 21.252.101.144/28 | 21.252.101.144 | 21.252.101.145 | 21.252.101.158 | 21.252.101.159 | 14 |
| 3 | 21.252.101.160/28 | 21.252.101.160 | 21.252.101.161 | 21.252.101.174 | 21.252.101.175 | 14 |
| 4 | 21.252.101.176/28 | 21.252.101.176 | 21.252.101.177 | 21.252.101.190 | 21.252.101.191 | 14 |
Split 21.252.101.128/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.101.128/29 | 21.252.101.128 | 21.252.101.129 | 21.252.101.134 | 21.252.101.135 | 6 |
| 2 | 21.252.101.136/29 | 21.252.101.136 | 21.252.101.137 | 21.252.101.142 | 21.252.101.143 | 6 |
| 3 | 21.252.101.144/29 | 21.252.101.144 | 21.252.101.145 | 21.252.101.150 | 21.252.101.151 | 6 |
| 4 | 21.252.101.152/29 | 21.252.101.152 | 21.252.101.153 | 21.252.101.158 | 21.252.101.159 | 6 |
| 5 | 21.252.101.160/29 | 21.252.101.160 | 21.252.101.161 | 21.252.101.166 | 21.252.101.167 | 6 |
| 6 | 21.252.101.168/29 | 21.252.101.168 | 21.252.101.169 | 21.252.101.174 | 21.252.101.175 | 6 |
| 7 | 21.252.101.176/29 | 21.252.101.176 | 21.252.101.177 | 21.252.101.182 | 21.252.101.183 | 6 |
| 8 | 21.252.101.184/29 | 21.252.101.184 | 21.252.101.185 | 21.252.101.190 | 21.252.101.191 | 6 |
Split 21.252.101.128/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.101.128/30 | 21.252.101.128 | 21.252.101.129 | 21.252.101.130 | 21.252.101.131 | 2 |
| 2 | 21.252.101.132/30 | 21.252.101.132 | 21.252.101.133 | 21.252.101.134 | 21.252.101.135 | 2 |
| 3 | 21.252.101.136/30 | 21.252.101.136 | 21.252.101.137 | 21.252.101.138 | 21.252.101.139 | 2 |
| 4 | 21.252.101.140/30 | 21.252.101.140 | 21.252.101.141 | 21.252.101.142 | 21.252.101.143 | 2 |
| 5 | 21.252.101.144/30 | 21.252.101.144 | 21.252.101.145 | 21.252.101.146 | 21.252.101.147 | 2 |
| 6 | 21.252.101.148/30 | 21.252.101.148 | 21.252.101.149 | 21.252.101.150 | 21.252.101.151 | 2 |
| 7 | 21.252.101.152/30 | 21.252.101.152 | 21.252.101.153 | 21.252.101.154 | 21.252.101.155 | 2 |
| 8 | 21.252.101.156/30 | 21.252.101.156 | 21.252.101.157 | 21.252.101.158 | 21.252.101.159 | 2 |
| 9 | 21.252.101.160/30 | 21.252.101.160 | 21.252.101.161 | 21.252.101.162 | 21.252.101.163 | 2 |
| 10 | 21.252.101.164/30 | 21.252.101.164 | 21.252.101.165 | 21.252.101.166 | 21.252.101.167 | 2 |
| 11 | 21.252.101.168/30 | 21.252.101.168 | 21.252.101.169 | 21.252.101.170 | 21.252.101.171 | 2 |
| 12 | 21.252.101.172/30 | 21.252.101.172 | 21.252.101.173 | 21.252.101.174 | 21.252.101.175 | 2 |
| 13 | 21.252.101.176/30 | 21.252.101.176 | 21.252.101.177 | 21.252.101.178 | 21.252.101.179 | 2 |
| 14 | 21.252.101.180/30 | 21.252.101.180 | 21.252.101.181 | 21.252.101.182 | 21.252.101.183 | 2 |
| 15 | 21.252.101.184/30 | 21.252.101.184 | 21.252.101.185 | 21.252.101.186 | 21.252.101.187 | 2 |
| 16 | 21.252.101.188/30 | 21.252.101.188 | 21.252.101.189 | 21.252.101.190 | 21.252.101.191 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.