1.78.172.0/22
PublicClass A — /22 prefix — 1,022 usable hosts
Network address — the base address of the block (1.78.172.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 1.78.175.255 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 | 1.78.172.0/22 |
| Network Address | 1.78.172.0 |
| Broadcast Address | 1.78.175.255 |
| 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 | 1.78.172.1 |
| Last Usable IP | 1.78.175.254 |
| Network (Hex) | 0x014EAC00 |
| Broadcast (Hex) | 0x014EAFFF |
| 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 1.78.172.0/22 into 2 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.78.172.0/23 | 1.78.172.0 | 1.78.172.1 | 1.78.173.254 | 1.78.173.255 | 510 |
| 2 | 1.78.174.0/23 | 1.78.174.0 | 1.78.174.1 | 1.78.175.254 | 1.78.175.255 | 510 |
Split 1.78.172.0/22 into 4 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.78.172.0/24 | 1.78.172.0 | 1.78.172.1 | 1.78.172.254 | 1.78.172.255 | 254 |
| 2 | 1.78.173.0/24 | 1.78.173.0 | 1.78.173.1 | 1.78.173.254 | 1.78.173.255 | 254 |
| 3 | 1.78.174.0/24 | 1.78.174.0 | 1.78.174.1 | 1.78.174.254 | 1.78.174.255 | 254 |
| 4 | 1.78.175.0/24 | 1.78.175.0 | 1.78.175.1 | 1.78.175.254 | 1.78.175.255 | 254 |
Split 1.78.172.0/22 into 8 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.78.172.0/25 | 1.78.172.0 | 1.78.172.1 | 1.78.172.126 | 1.78.172.127 | 126 |
| 2 | 1.78.172.128/25 | 1.78.172.128 | 1.78.172.129 | 1.78.172.254 | 1.78.172.255 | 126 |
| 3 | 1.78.173.0/25 | 1.78.173.0 | 1.78.173.1 | 1.78.173.126 | 1.78.173.127 | 126 |
| 4 | 1.78.173.128/25 | 1.78.173.128 | 1.78.173.129 | 1.78.173.254 | 1.78.173.255 | 126 |
| 5 | 1.78.174.0/25 | 1.78.174.0 | 1.78.174.1 | 1.78.174.126 | 1.78.174.127 | 126 |
| 6 | 1.78.174.128/25 | 1.78.174.128 | 1.78.174.129 | 1.78.174.254 | 1.78.174.255 | 126 |
| 7 | 1.78.175.0/25 | 1.78.175.0 | 1.78.175.1 | 1.78.175.126 | 1.78.175.127 | 126 |
| 8 | 1.78.175.128/25 | 1.78.175.128 | 1.78.175.129 | 1.78.175.254 | 1.78.175.255 | 126 |
Split 1.78.172.0/22 into 16 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 1.78.172.0/26 | 1.78.172.0 | 1.78.172.1 | 1.78.172.62 | 1.78.172.63 | 62 |
| 2 | 1.78.172.64/26 | 1.78.172.64 | 1.78.172.65 | 1.78.172.126 | 1.78.172.127 | 62 |
| 3 | 1.78.172.128/26 | 1.78.172.128 | 1.78.172.129 | 1.78.172.190 | 1.78.172.191 | 62 |
| 4 | 1.78.172.192/26 | 1.78.172.192 | 1.78.172.193 | 1.78.172.254 | 1.78.172.255 | 62 |
| 5 | 1.78.173.0/26 | 1.78.173.0 | 1.78.173.1 | 1.78.173.62 | 1.78.173.63 | 62 |
| 6 | 1.78.173.64/26 | 1.78.173.64 | 1.78.173.65 | 1.78.173.126 | 1.78.173.127 | 62 |
| 7 | 1.78.173.128/26 | 1.78.173.128 | 1.78.173.129 | 1.78.173.190 | 1.78.173.191 | 62 |
| 8 | 1.78.173.192/26 | 1.78.173.192 | 1.78.173.193 | 1.78.173.254 | 1.78.173.255 | 62 |
| 9 | 1.78.174.0/26 | 1.78.174.0 | 1.78.174.1 | 1.78.174.62 | 1.78.174.63 | 62 |
| 10 | 1.78.174.64/26 | 1.78.174.64 | 1.78.174.65 | 1.78.174.126 | 1.78.174.127 | 62 |
| 11 | 1.78.174.128/26 | 1.78.174.128 | 1.78.174.129 | 1.78.174.190 | 1.78.174.191 | 62 |
| 12 | 1.78.174.192/26 | 1.78.174.192 | 1.78.174.193 | 1.78.174.254 | 1.78.174.255 | 62 |
| 13 | 1.78.175.0/26 | 1.78.175.0 | 1.78.175.1 | 1.78.175.62 | 1.78.175.63 | 62 |
| 14 | 1.78.175.64/26 | 1.78.175.64 | 1.78.175.65 | 1.78.175.126 | 1.78.175.127 | 62 |
| 15 | 1.78.175.128/26 | 1.78.175.128 | 1.78.175.129 | 1.78.175.190 | 1.78.175.191 | 62 |
| 16 | 1.78.175.192/26 | 1.78.175.192 | 1.78.175.193 | 1.78.175.254 | 1.78.175.255 | 62 |