10.31.212.0/22
Private (RFC 1918) RFC 1918Class A — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (10.31.212.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 10.31.215.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 1,022 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.252.0 is the dotted-decimal equivalent of /22. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 10.31.212.0/22 |
| Network Address | 10.31.212.0 |
| Broadcast Address | 10.31.215.255 |
| Subnet Mask | 255.255.252.0 |
| Wildcard Mask | 0.0.3.255 |
| Prefix Length | /22 |
| IP Address Class | Class A |
| Total IP Addresses | 1,024 |
| Usable Host Addresses | 1,022 |
| First Usable IP | 10.31.212.1 |
| Last Usable IP | 10.31.215.254 |
| Network (Hex) | 0x0A1FD400 |
| Broadcast (Hex) | 0x0A1FD7FF |
| Governing RFC | RFC 1918 |
| Address Type | Private (RFC 1918) |
Binary Representation
The first 22 bits (1s in the mask) identify the network. The remaining 10 bits identify hosts within the network.
Split into Equal Subnets
Split 10.31.212.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.212.0/23 | 10.31.212.0 | 10.31.212.1 | 10.31.213.254 | 10.31.213.255 | 510 |
| 2 | 10.31.214.0/23 | 10.31.214.0 | 10.31.214.1 | 10.31.215.254 | 10.31.215.255 | 510 |
Split 10.31.212.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.212.0/24 | 10.31.212.0 | 10.31.212.1 | 10.31.212.254 | 10.31.212.255 | 254 |
| 2 | 10.31.213.0/24 | 10.31.213.0 | 10.31.213.1 | 10.31.213.254 | 10.31.213.255 | 254 |
| 3 | 10.31.214.0/24 | 10.31.214.0 | 10.31.214.1 | 10.31.214.254 | 10.31.214.255 | 254 |
| 4 | 10.31.215.0/24 | 10.31.215.0 | 10.31.215.1 | 10.31.215.254 | 10.31.215.255 | 254 |
Split 10.31.212.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.212.0/25 | 10.31.212.0 | 10.31.212.1 | 10.31.212.126 | 10.31.212.127 | 126 |
| 2 | 10.31.212.128/25 | 10.31.212.128 | 10.31.212.129 | 10.31.212.254 | 10.31.212.255 | 126 |
| 3 | 10.31.213.0/25 | 10.31.213.0 | 10.31.213.1 | 10.31.213.126 | 10.31.213.127 | 126 |
| 4 | 10.31.213.128/25 | 10.31.213.128 | 10.31.213.129 | 10.31.213.254 | 10.31.213.255 | 126 |
| 5 | 10.31.214.0/25 | 10.31.214.0 | 10.31.214.1 | 10.31.214.126 | 10.31.214.127 | 126 |
| 6 | 10.31.214.128/25 | 10.31.214.128 | 10.31.214.129 | 10.31.214.254 | 10.31.214.255 | 126 |
| 7 | 10.31.215.0/25 | 10.31.215.0 | 10.31.215.1 | 10.31.215.126 | 10.31.215.127 | 126 |
| 8 | 10.31.215.128/25 | 10.31.215.128 | 10.31.215.129 | 10.31.215.254 | 10.31.215.255 | 126 |
Split 10.31.212.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.212.0/26 | 10.31.212.0 | 10.31.212.1 | 10.31.212.62 | 10.31.212.63 | 62 |
| 2 | 10.31.212.64/26 | 10.31.212.64 | 10.31.212.65 | 10.31.212.126 | 10.31.212.127 | 62 |
| 3 | 10.31.212.128/26 | 10.31.212.128 | 10.31.212.129 | 10.31.212.190 | 10.31.212.191 | 62 |
| 4 | 10.31.212.192/26 | 10.31.212.192 | 10.31.212.193 | 10.31.212.254 | 10.31.212.255 | 62 |
| 5 | 10.31.213.0/26 | 10.31.213.0 | 10.31.213.1 | 10.31.213.62 | 10.31.213.63 | 62 |
| 6 | 10.31.213.64/26 | 10.31.213.64 | 10.31.213.65 | 10.31.213.126 | 10.31.213.127 | 62 |
| 7 | 10.31.213.128/26 | 10.31.213.128 | 10.31.213.129 | 10.31.213.190 | 10.31.213.191 | 62 |
| 8 | 10.31.213.192/26 | 10.31.213.192 | 10.31.213.193 | 10.31.213.254 | 10.31.213.255 | 62 |
| 9 | 10.31.214.0/26 | 10.31.214.0 | 10.31.214.1 | 10.31.214.62 | 10.31.214.63 | 62 |
| 10 | 10.31.214.64/26 | 10.31.214.64 | 10.31.214.65 | 10.31.214.126 | 10.31.214.127 | 62 |
| 11 | 10.31.214.128/26 | 10.31.214.128 | 10.31.214.129 | 10.31.214.190 | 10.31.214.191 | 62 |
| 12 | 10.31.214.192/26 | 10.31.214.192 | 10.31.214.193 | 10.31.214.254 | 10.31.214.255 | 62 |
| 13 | 10.31.215.0/26 | 10.31.215.0 | 10.31.215.1 | 10.31.215.62 | 10.31.215.63 | 62 |
| 14 | 10.31.215.64/26 | 10.31.215.64 | 10.31.215.65 | 10.31.215.126 | 10.31.215.127 | 62 |
| 15 | 10.31.215.128/26 | 10.31.215.128 | 10.31.215.129 | 10.31.215.190 | 10.31.215.191 | 62 |
| 16 | 10.31.215.192/26 | 10.31.215.192 | 10.31.215.193 | 10.31.215.254 | 10.31.215.255 | 62 |