151.3.16.0/22
PublicClass B — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (151.3.16.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.3.19.255 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 | 151.3.16.0/22 |
| Network Address | 151.3.16.0 |
| Broadcast Address | 151.3.19.255 |
| Subnet Mask | 255.255.252.0 |
| Wildcard Mask | 0.0.3.255 |
| Prefix Length | /22 |
| IP Address Class | Class B |
| Total IP Addresses | 1,024 |
| Usable Host Addresses | 1,022 |
| First Usable IP | 151.3.16.1 |
| Last Usable IP | 151.3.19.254 |
| Network (Hex) | 0x97031000 |
| Broadcast (Hex) | 0x970313FF |
| Address Type | Public / Globally Routable |
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 151.3.16.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.3.16.0/23 | 151.3.16.0 | 151.3.16.1 | 151.3.17.254 | 151.3.17.255 | 510 |
| 2 | 151.3.18.0/23 | 151.3.18.0 | 151.3.18.1 | 151.3.19.254 | 151.3.19.255 | 510 |
Split 151.3.16.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.3.16.0/24 | 151.3.16.0 | 151.3.16.1 | 151.3.16.254 | 151.3.16.255 | 254 |
| 2 | 151.3.17.0/24 | 151.3.17.0 | 151.3.17.1 | 151.3.17.254 | 151.3.17.255 | 254 |
| 3 | 151.3.18.0/24 | 151.3.18.0 | 151.3.18.1 | 151.3.18.254 | 151.3.18.255 | 254 |
| 4 | 151.3.19.0/24 | 151.3.19.0 | 151.3.19.1 | 151.3.19.254 | 151.3.19.255 | 254 |
Split 151.3.16.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.3.16.0/25 | 151.3.16.0 | 151.3.16.1 | 151.3.16.126 | 151.3.16.127 | 126 |
| 2 | 151.3.16.128/25 | 151.3.16.128 | 151.3.16.129 | 151.3.16.254 | 151.3.16.255 | 126 |
| 3 | 151.3.17.0/25 | 151.3.17.0 | 151.3.17.1 | 151.3.17.126 | 151.3.17.127 | 126 |
| 4 | 151.3.17.128/25 | 151.3.17.128 | 151.3.17.129 | 151.3.17.254 | 151.3.17.255 | 126 |
| 5 | 151.3.18.0/25 | 151.3.18.0 | 151.3.18.1 | 151.3.18.126 | 151.3.18.127 | 126 |
| 6 | 151.3.18.128/25 | 151.3.18.128 | 151.3.18.129 | 151.3.18.254 | 151.3.18.255 | 126 |
| 7 | 151.3.19.0/25 | 151.3.19.0 | 151.3.19.1 | 151.3.19.126 | 151.3.19.127 | 126 |
| 8 | 151.3.19.128/25 | 151.3.19.128 | 151.3.19.129 | 151.3.19.254 | 151.3.19.255 | 126 |
Split 151.3.16.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.3.16.0/26 | 151.3.16.0 | 151.3.16.1 | 151.3.16.62 | 151.3.16.63 | 62 |
| 2 | 151.3.16.64/26 | 151.3.16.64 | 151.3.16.65 | 151.3.16.126 | 151.3.16.127 | 62 |
| 3 | 151.3.16.128/26 | 151.3.16.128 | 151.3.16.129 | 151.3.16.190 | 151.3.16.191 | 62 |
| 4 | 151.3.16.192/26 | 151.3.16.192 | 151.3.16.193 | 151.3.16.254 | 151.3.16.255 | 62 |
| 5 | 151.3.17.0/26 | 151.3.17.0 | 151.3.17.1 | 151.3.17.62 | 151.3.17.63 | 62 |
| 6 | 151.3.17.64/26 | 151.3.17.64 | 151.3.17.65 | 151.3.17.126 | 151.3.17.127 | 62 |
| 7 | 151.3.17.128/26 | 151.3.17.128 | 151.3.17.129 | 151.3.17.190 | 151.3.17.191 | 62 |
| 8 | 151.3.17.192/26 | 151.3.17.192 | 151.3.17.193 | 151.3.17.254 | 151.3.17.255 | 62 |
| 9 | 151.3.18.0/26 | 151.3.18.0 | 151.3.18.1 | 151.3.18.62 | 151.3.18.63 | 62 |
| 10 | 151.3.18.64/26 | 151.3.18.64 | 151.3.18.65 | 151.3.18.126 | 151.3.18.127 | 62 |
| 11 | 151.3.18.128/26 | 151.3.18.128 | 151.3.18.129 | 151.3.18.190 | 151.3.18.191 | 62 |
| 12 | 151.3.18.192/26 | 151.3.18.192 | 151.3.18.193 | 151.3.18.254 | 151.3.18.255 | 62 |
| 13 | 151.3.19.0/26 | 151.3.19.0 | 151.3.19.1 | 151.3.19.62 | 151.3.19.63 | 62 |
| 14 | 151.3.19.64/26 | 151.3.19.64 | 151.3.19.65 | 151.3.19.126 | 151.3.19.127 | 62 |
| 15 | 151.3.19.128/26 | 151.3.19.128 | 151.3.19.129 | 151.3.19.190 | 151.3.19.191 | 62 |
| 16 | 151.3.19.192/26 | 151.3.19.192 | 151.3.19.193 | 151.3.19.254 | 151.3.19.255 | 62 |