212.237.81.0/24
PublicClass C — /24 prefix — 254 usable hosts
Network address — the base address of the block (212.237.81.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 212.237.81.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 254 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.0 is the dotted-decimal equivalent of /24. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 212.237.81.0/24 |
| Network Address | 212.237.81.0 |
| Broadcast Address | 212.237.81.255 |
| Subnet Mask | 255.255.255.0 |
| Wildcard Mask | 0.0.0.255 |
| Prefix Length | /24 |
| IP Address Class | Class C |
| Total IP Addresses | 256 |
| Usable Host Addresses | 254 |
| First Usable IP | 212.237.81.1 |
| Last Usable IP | 212.237.81.254 |
| Network (Hex) | 0xD4ED5100 |
| Broadcast (Hex) | 0xD4ED51FF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 24 bits (1s in the mask) identify the network. The remaining 8 bits identify hosts within the network.
Split into Equal Subnets
Split 212.237.81.0/24 into 2 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 212.237.81.0/25 | 212.237.81.0 | 212.237.81.1 | 212.237.81.126 | 212.237.81.127 | 126 |
| 2 | 212.237.81.128/25 | 212.237.81.128 | 212.237.81.129 | 212.237.81.254 | 212.237.81.255 | 126 |
Split 212.237.81.0/24 into 4 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 212.237.81.0/26 | 212.237.81.0 | 212.237.81.1 | 212.237.81.62 | 212.237.81.63 | 62 |
| 2 | 212.237.81.64/26 | 212.237.81.64 | 212.237.81.65 | 212.237.81.126 | 212.237.81.127 | 62 |
| 3 | 212.237.81.128/26 | 212.237.81.128 | 212.237.81.129 | 212.237.81.190 | 212.237.81.191 | 62 |
| 4 | 212.237.81.192/26 | 212.237.81.192 | 212.237.81.193 | 212.237.81.254 | 212.237.81.255 | 62 |
Split 212.237.81.0/24 into 8 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 212.237.81.0/27 | 212.237.81.0 | 212.237.81.1 | 212.237.81.30 | 212.237.81.31 | 30 |
| 2 | 212.237.81.32/27 | 212.237.81.32 | 212.237.81.33 | 212.237.81.62 | 212.237.81.63 | 30 |
| 3 | 212.237.81.64/27 | 212.237.81.64 | 212.237.81.65 | 212.237.81.94 | 212.237.81.95 | 30 |
| 4 | 212.237.81.96/27 | 212.237.81.96 | 212.237.81.97 | 212.237.81.126 | 212.237.81.127 | 30 |
| 5 | 212.237.81.128/27 | 212.237.81.128 | 212.237.81.129 | 212.237.81.158 | 212.237.81.159 | 30 |
| 6 | 212.237.81.160/27 | 212.237.81.160 | 212.237.81.161 | 212.237.81.190 | 212.237.81.191 | 30 |
| 7 | 212.237.81.192/27 | 212.237.81.192 | 212.237.81.193 | 212.237.81.222 | 212.237.81.223 | 30 |
| 8 | 212.237.81.224/27 | 212.237.81.224 | 212.237.81.225 | 212.237.81.254 | 212.237.81.255 | 30 |
Split 212.237.81.0/24 into 16 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 212.237.81.0/28 | 212.237.81.0 | 212.237.81.1 | 212.237.81.14 | 212.237.81.15 | 14 |
| 2 | 212.237.81.16/28 | 212.237.81.16 | 212.237.81.17 | 212.237.81.30 | 212.237.81.31 | 14 |
| 3 | 212.237.81.32/28 | 212.237.81.32 | 212.237.81.33 | 212.237.81.46 | 212.237.81.47 | 14 |
| 4 | 212.237.81.48/28 | 212.237.81.48 | 212.237.81.49 | 212.237.81.62 | 212.237.81.63 | 14 |
| 5 | 212.237.81.64/28 | 212.237.81.64 | 212.237.81.65 | 212.237.81.78 | 212.237.81.79 | 14 |
| 6 | 212.237.81.80/28 | 212.237.81.80 | 212.237.81.81 | 212.237.81.94 | 212.237.81.95 | 14 |
| 7 | 212.237.81.96/28 | 212.237.81.96 | 212.237.81.97 | 212.237.81.110 | 212.237.81.111 | 14 |
| 8 | 212.237.81.112/28 | 212.237.81.112 | 212.237.81.113 | 212.237.81.126 | 212.237.81.127 | 14 |
| 9 | 212.237.81.128/28 | 212.237.81.128 | 212.237.81.129 | 212.237.81.142 | 212.237.81.143 | 14 |
| 10 | 212.237.81.144/28 | 212.237.81.144 | 212.237.81.145 | 212.237.81.158 | 212.237.81.159 | 14 |
| 11 | 212.237.81.160/28 | 212.237.81.160 | 212.237.81.161 | 212.237.81.174 | 212.237.81.175 | 14 |
| 12 | 212.237.81.176/28 | 212.237.81.176 | 212.237.81.177 | 212.237.81.190 | 212.237.81.191 | 14 |
| 13 | 212.237.81.192/28 | 212.237.81.192 | 212.237.81.193 | 212.237.81.206 | 212.237.81.207 | 14 |
| 14 | 212.237.81.208/28 | 212.237.81.208 | 212.237.81.209 | 212.237.81.222 | 212.237.81.223 | 14 |
| 15 | 212.237.81.224/28 | 212.237.81.224 | 212.237.81.225 | 212.237.81.238 | 212.237.81.239 | 14 |
| 16 | 212.237.81.240/28 | 212.237.81.240 | 212.237.81.241 | 212.237.81.254 | 212.237.81.255 | 14 |
IP Address Sample
Showing first 16 of 256 total IPs.