87.151.4.0/22
PublicClass A — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (87.151.4.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 87.151.7.255 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 | 87.151.4.0/22 |
| Network Address | 87.151.4.0 |
| Broadcast Address | 87.151.7.255 |
| 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 | 87.151.4.1 |
| Last Usable IP | 87.151.7.254 |
| Network (Hex) | 0x57970400 |
| Broadcast (Hex) | 0x579707FF |
| 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 87.151.4.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 87.151.4.0/23 | 87.151.4.0 | 87.151.4.1 | 87.151.5.254 | 87.151.5.255 | 510 |
| 2 | 87.151.6.0/23 | 87.151.6.0 | 87.151.6.1 | 87.151.7.254 | 87.151.7.255 | 510 |
Split 87.151.4.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 87.151.4.0/24 | 87.151.4.0 | 87.151.4.1 | 87.151.4.254 | 87.151.4.255 | 254 |
| 2 | 87.151.5.0/24 | 87.151.5.0 | 87.151.5.1 | 87.151.5.254 | 87.151.5.255 | 254 |
| 3 | 87.151.6.0/24 | 87.151.6.0 | 87.151.6.1 | 87.151.6.254 | 87.151.6.255 | 254 |
| 4 | 87.151.7.0/24 | 87.151.7.0 | 87.151.7.1 | 87.151.7.254 | 87.151.7.255 | 254 |
Split 87.151.4.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 87.151.4.0/25 | 87.151.4.0 | 87.151.4.1 | 87.151.4.126 | 87.151.4.127 | 126 |
| 2 | 87.151.4.128/25 | 87.151.4.128 | 87.151.4.129 | 87.151.4.254 | 87.151.4.255 | 126 |
| 3 | 87.151.5.0/25 | 87.151.5.0 | 87.151.5.1 | 87.151.5.126 | 87.151.5.127 | 126 |
| 4 | 87.151.5.128/25 | 87.151.5.128 | 87.151.5.129 | 87.151.5.254 | 87.151.5.255 | 126 |
| 5 | 87.151.6.0/25 | 87.151.6.0 | 87.151.6.1 | 87.151.6.126 | 87.151.6.127 | 126 |
| 6 | 87.151.6.128/25 | 87.151.6.128 | 87.151.6.129 | 87.151.6.254 | 87.151.6.255 | 126 |
| 7 | 87.151.7.0/25 | 87.151.7.0 | 87.151.7.1 | 87.151.7.126 | 87.151.7.127 | 126 |
| 8 | 87.151.7.128/25 | 87.151.7.128 | 87.151.7.129 | 87.151.7.254 | 87.151.7.255 | 126 |
Split 87.151.4.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 87.151.4.0/26 | 87.151.4.0 | 87.151.4.1 | 87.151.4.62 | 87.151.4.63 | 62 |
| 2 | 87.151.4.64/26 | 87.151.4.64 | 87.151.4.65 | 87.151.4.126 | 87.151.4.127 | 62 |
| 3 | 87.151.4.128/26 | 87.151.4.128 | 87.151.4.129 | 87.151.4.190 | 87.151.4.191 | 62 |
| 4 | 87.151.4.192/26 | 87.151.4.192 | 87.151.4.193 | 87.151.4.254 | 87.151.4.255 | 62 |
| 5 | 87.151.5.0/26 | 87.151.5.0 | 87.151.5.1 | 87.151.5.62 | 87.151.5.63 | 62 |
| 6 | 87.151.5.64/26 | 87.151.5.64 | 87.151.5.65 | 87.151.5.126 | 87.151.5.127 | 62 |
| 7 | 87.151.5.128/26 | 87.151.5.128 | 87.151.5.129 | 87.151.5.190 | 87.151.5.191 | 62 |
| 8 | 87.151.5.192/26 | 87.151.5.192 | 87.151.5.193 | 87.151.5.254 | 87.151.5.255 | 62 |
| 9 | 87.151.6.0/26 | 87.151.6.0 | 87.151.6.1 | 87.151.6.62 | 87.151.6.63 | 62 |
| 10 | 87.151.6.64/26 | 87.151.6.64 | 87.151.6.65 | 87.151.6.126 | 87.151.6.127 | 62 |
| 11 | 87.151.6.128/26 | 87.151.6.128 | 87.151.6.129 | 87.151.6.190 | 87.151.6.191 | 62 |
| 12 | 87.151.6.192/26 | 87.151.6.192 | 87.151.6.193 | 87.151.6.254 | 87.151.6.255 | 62 |
| 13 | 87.151.7.0/26 | 87.151.7.0 | 87.151.7.1 | 87.151.7.62 | 87.151.7.63 | 62 |
| 14 | 87.151.7.64/26 | 87.151.7.64 | 87.151.7.65 | 87.151.7.126 | 87.151.7.127 | 62 |
| 15 | 87.151.7.128/26 | 87.151.7.128 | 87.151.7.129 | 87.151.7.190 | 87.151.7.191 | 62 |
| 16 | 87.151.7.192/26 | 87.151.7.192 | 87.151.7.193 | 87.151.7.254 | 87.151.7.255 | 62 |