151.4.80.0/22
PublicClass B — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (151.4.80.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.4.83.255 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 | 151.4.80.0/22 |
| Network Address | 151.4.80.0 |
| Broadcast Address | 151.4.83.255 |
| 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 | 151.4.80.1 |
| Last Usable IP | 151.4.83.254 |
| Network (Hex) | 0x97045000 |
| Broadcast (Hex) | 0x970453FF |
| 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 151.4.80.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.4.80.0/23 | 151.4.80.0 | 151.4.80.1 | 151.4.81.254 | 151.4.81.255 | 510 |
| 2 | 151.4.82.0/23 | 151.4.82.0 | 151.4.82.1 | 151.4.83.254 | 151.4.83.255 | 510 |
Split 151.4.80.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.4.80.0/24 | 151.4.80.0 | 151.4.80.1 | 151.4.80.254 | 151.4.80.255 | 254 |
| 2 | 151.4.81.0/24 | 151.4.81.0 | 151.4.81.1 | 151.4.81.254 | 151.4.81.255 | 254 |
| 3 | 151.4.82.0/24 | 151.4.82.0 | 151.4.82.1 | 151.4.82.254 | 151.4.82.255 | 254 |
| 4 | 151.4.83.0/24 | 151.4.83.0 | 151.4.83.1 | 151.4.83.254 | 151.4.83.255 | 254 |
Split 151.4.80.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.4.80.0/25 | 151.4.80.0 | 151.4.80.1 | 151.4.80.126 | 151.4.80.127 | 126 |
| 2 | 151.4.80.128/25 | 151.4.80.128 | 151.4.80.129 | 151.4.80.254 | 151.4.80.255 | 126 |
| 3 | 151.4.81.0/25 | 151.4.81.0 | 151.4.81.1 | 151.4.81.126 | 151.4.81.127 | 126 |
| 4 | 151.4.81.128/25 | 151.4.81.128 | 151.4.81.129 | 151.4.81.254 | 151.4.81.255 | 126 |
| 5 | 151.4.82.0/25 | 151.4.82.0 | 151.4.82.1 | 151.4.82.126 | 151.4.82.127 | 126 |
| 6 | 151.4.82.128/25 | 151.4.82.128 | 151.4.82.129 | 151.4.82.254 | 151.4.82.255 | 126 |
| 7 | 151.4.83.0/25 | 151.4.83.0 | 151.4.83.1 | 151.4.83.126 | 151.4.83.127 | 126 |
| 8 | 151.4.83.128/25 | 151.4.83.128 | 151.4.83.129 | 151.4.83.254 | 151.4.83.255 | 126 |
Split 151.4.80.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.4.80.0/26 | 151.4.80.0 | 151.4.80.1 | 151.4.80.62 | 151.4.80.63 | 62 |
| 2 | 151.4.80.64/26 | 151.4.80.64 | 151.4.80.65 | 151.4.80.126 | 151.4.80.127 | 62 |
| 3 | 151.4.80.128/26 | 151.4.80.128 | 151.4.80.129 | 151.4.80.190 | 151.4.80.191 | 62 |
| 4 | 151.4.80.192/26 | 151.4.80.192 | 151.4.80.193 | 151.4.80.254 | 151.4.80.255 | 62 |
| 5 | 151.4.81.0/26 | 151.4.81.0 | 151.4.81.1 | 151.4.81.62 | 151.4.81.63 | 62 |
| 6 | 151.4.81.64/26 | 151.4.81.64 | 151.4.81.65 | 151.4.81.126 | 151.4.81.127 | 62 |
| 7 | 151.4.81.128/26 | 151.4.81.128 | 151.4.81.129 | 151.4.81.190 | 151.4.81.191 | 62 |
| 8 | 151.4.81.192/26 | 151.4.81.192 | 151.4.81.193 | 151.4.81.254 | 151.4.81.255 | 62 |
| 9 | 151.4.82.0/26 | 151.4.82.0 | 151.4.82.1 | 151.4.82.62 | 151.4.82.63 | 62 |
| 10 | 151.4.82.64/26 | 151.4.82.64 | 151.4.82.65 | 151.4.82.126 | 151.4.82.127 | 62 |
| 11 | 151.4.82.128/26 | 151.4.82.128 | 151.4.82.129 | 151.4.82.190 | 151.4.82.191 | 62 |
| 12 | 151.4.82.192/26 | 151.4.82.192 | 151.4.82.193 | 151.4.82.254 | 151.4.82.255 | 62 |
| 13 | 151.4.83.0/26 | 151.4.83.0 | 151.4.83.1 | 151.4.83.62 | 151.4.83.63 | 62 |
| 14 | 151.4.83.64/26 | 151.4.83.64 | 151.4.83.65 | 151.4.83.126 | 151.4.83.127 | 62 |
| 15 | 151.4.83.128/26 | 151.4.83.128 | 151.4.83.129 | 151.4.83.190 | 151.4.83.191 | 62 |
| 16 | 151.4.83.192/26 | 151.4.83.192 | 151.4.83.193 | 151.4.83.254 | 151.4.83.255 | 62 |