78.136.72.0/22
PublicClass A — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (78.136.72.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 78.136.75.255 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 | 78.136.72.0/22 |
| Network Address | 78.136.72.0 |
| Broadcast Address | 78.136.75.255 |
| 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 | 78.136.72.1 |
| Last Usable IP | 78.136.75.254 |
| Network (Hex) | 0x4E884800 |
| Broadcast (Hex) | 0x4E884BFF |
| 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 78.136.72.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 78.136.72.0/23 | 78.136.72.0 | 78.136.72.1 | 78.136.73.254 | 78.136.73.255 | 510 |
| 2 | 78.136.74.0/23 | 78.136.74.0 | 78.136.74.1 | 78.136.75.254 | 78.136.75.255 | 510 |
Split 78.136.72.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 78.136.72.0/24 | 78.136.72.0 | 78.136.72.1 | 78.136.72.254 | 78.136.72.255 | 254 |
| 2 | 78.136.73.0/24 | 78.136.73.0 | 78.136.73.1 | 78.136.73.254 | 78.136.73.255 | 254 |
| 3 | 78.136.74.0/24 | 78.136.74.0 | 78.136.74.1 | 78.136.74.254 | 78.136.74.255 | 254 |
| 4 | 78.136.75.0/24 | 78.136.75.0 | 78.136.75.1 | 78.136.75.254 | 78.136.75.255 | 254 |
Split 78.136.72.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 78.136.72.0/25 | 78.136.72.0 | 78.136.72.1 | 78.136.72.126 | 78.136.72.127 | 126 |
| 2 | 78.136.72.128/25 | 78.136.72.128 | 78.136.72.129 | 78.136.72.254 | 78.136.72.255 | 126 |
| 3 | 78.136.73.0/25 | 78.136.73.0 | 78.136.73.1 | 78.136.73.126 | 78.136.73.127 | 126 |
| 4 | 78.136.73.128/25 | 78.136.73.128 | 78.136.73.129 | 78.136.73.254 | 78.136.73.255 | 126 |
| 5 | 78.136.74.0/25 | 78.136.74.0 | 78.136.74.1 | 78.136.74.126 | 78.136.74.127 | 126 |
| 6 | 78.136.74.128/25 | 78.136.74.128 | 78.136.74.129 | 78.136.74.254 | 78.136.74.255 | 126 |
| 7 | 78.136.75.0/25 | 78.136.75.0 | 78.136.75.1 | 78.136.75.126 | 78.136.75.127 | 126 |
| 8 | 78.136.75.128/25 | 78.136.75.128 | 78.136.75.129 | 78.136.75.254 | 78.136.75.255 | 126 |
Split 78.136.72.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 78.136.72.0/26 | 78.136.72.0 | 78.136.72.1 | 78.136.72.62 | 78.136.72.63 | 62 |
| 2 | 78.136.72.64/26 | 78.136.72.64 | 78.136.72.65 | 78.136.72.126 | 78.136.72.127 | 62 |
| 3 | 78.136.72.128/26 | 78.136.72.128 | 78.136.72.129 | 78.136.72.190 | 78.136.72.191 | 62 |
| 4 | 78.136.72.192/26 | 78.136.72.192 | 78.136.72.193 | 78.136.72.254 | 78.136.72.255 | 62 |
| 5 | 78.136.73.0/26 | 78.136.73.0 | 78.136.73.1 | 78.136.73.62 | 78.136.73.63 | 62 |
| 6 | 78.136.73.64/26 | 78.136.73.64 | 78.136.73.65 | 78.136.73.126 | 78.136.73.127 | 62 |
| 7 | 78.136.73.128/26 | 78.136.73.128 | 78.136.73.129 | 78.136.73.190 | 78.136.73.191 | 62 |
| 8 | 78.136.73.192/26 | 78.136.73.192 | 78.136.73.193 | 78.136.73.254 | 78.136.73.255 | 62 |
| 9 | 78.136.74.0/26 | 78.136.74.0 | 78.136.74.1 | 78.136.74.62 | 78.136.74.63 | 62 |
| 10 | 78.136.74.64/26 | 78.136.74.64 | 78.136.74.65 | 78.136.74.126 | 78.136.74.127 | 62 |
| 11 | 78.136.74.128/26 | 78.136.74.128 | 78.136.74.129 | 78.136.74.190 | 78.136.74.191 | 62 |
| 12 | 78.136.74.192/26 | 78.136.74.192 | 78.136.74.193 | 78.136.74.254 | 78.136.74.255 | 62 |
| 13 | 78.136.75.0/26 | 78.136.75.0 | 78.136.75.1 | 78.136.75.62 | 78.136.75.63 | 62 |
| 14 | 78.136.75.64/26 | 78.136.75.64 | 78.136.75.65 | 78.136.75.126 | 78.136.75.127 | 62 |
| 15 | 78.136.75.128/26 | 78.136.75.128 | 78.136.75.129 | 78.136.75.190 | 78.136.75.191 | 62 |
| 16 | 78.136.75.192/26 | 78.136.75.192 | 78.136.75.193 | 78.136.75.254 | 78.136.75.255 | 62 |