127.240.32.0/19
Loopback RFC 5735Class A — /19 prefix — 8,190 usable hosts
Network address — the base address of the block (127.240.32.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 127.240.63.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 8,190 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.224.0 is the dotted-decimal equivalent of /19. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 127.240.32.0/19 |
| Network Address | 127.240.32.0 |
| Broadcast Address | 127.240.63.255 |
| Subnet Mask | 255.255.224.0 |
| Wildcard Mask | 0.0.31.255 |
| Prefix Length | /19 |
| IP Address Class | Class A |
| Total IP Addresses | 8,192 |
| Usable Host Addresses | 8,190 |
| First Usable IP | 127.240.32.1 |
| Last Usable IP | 127.240.63.254 |
| Network (Hex) | 0x7FF02000 |
| Broadcast (Hex) | 0x7FF03FFF |
| Governing RFC | RFC 5735 |
| Address Type | Loopback |
Binary Representation
The first 19 bits (1s in the mask) identify the network. The remaining 13 bits identify hosts within the network.
Split into Equal Subnets
Split 127.240.32.0/19 into 2 equal /20 subnets (4,094 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 127.240.32.0/20 | 127.240.32.0 | 127.240.32.1 | 127.240.47.254 | 127.240.47.255 | 4,094 |
| 2 | 127.240.48.0/20 | 127.240.48.0 | 127.240.48.1 | 127.240.63.254 | 127.240.63.255 | 4,094 |
Split 127.240.32.0/19 into 4 equal /21 subnets (2,046 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 127.240.32.0/21 | 127.240.32.0 | 127.240.32.1 | 127.240.39.254 | 127.240.39.255 | 2,046 |
| 2 | 127.240.40.0/21 | 127.240.40.0 | 127.240.40.1 | 127.240.47.254 | 127.240.47.255 | 2,046 |
| 3 | 127.240.48.0/21 | 127.240.48.0 | 127.240.48.1 | 127.240.55.254 | 127.240.55.255 | 2,046 |
| 4 | 127.240.56.0/21 | 127.240.56.0 | 127.240.56.1 | 127.240.63.254 | 127.240.63.255 | 2,046 |
Split 127.240.32.0/19 into 8 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 127.240.32.0/22 | 127.240.32.0 | 127.240.32.1 | 127.240.35.254 | 127.240.35.255 | 1,022 |
| 2 | 127.240.36.0/22 | 127.240.36.0 | 127.240.36.1 | 127.240.39.254 | 127.240.39.255 | 1,022 |
| 3 | 127.240.40.0/22 | 127.240.40.0 | 127.240.40.1 | 127.240.43.254 | 127.240.43.255 | 1,022 |
| 4 | 127.240.44.0/22 | 127.240.44.0 | 127.240.44.1 | 127.240.47.254 | 127.240.47.255 | 1,022 |
| 5 | 127.240.48.0/22 | 127.240.48.0 | 127.240.48.1 | 127.240.51.254 | 127.240.51.255 | 1,022 |
| 6 | 127.240.52.0/22 | 127.240.52.0 | 127.240.52.1 | 127.240.55.254 | 127.240.55.255 | 1,022 |
| 7 | 127.240.56.0/22 | 127.240.56.0 | 127.240.56.1 | 127.240.59.254 | 127.240.59.255 | 1,022 |
| 8 | 127.240.60.0/22 | 127.240.60.0 | 127.240.60.1 | 127.240.63.254 | 127.240.63.255 | 1,022 |
Split 127.240.32.0/19 into 16 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 127.240.32.0/23 | 127.240.32.0 | 127.240.32.1 | 127.240.33.254 | 127.240.33.255 | 510 |
| 2 | 127.240.34.0/23 | 127.240.34.0 | 127.240.34.1 | 127.240.35.254 | 127.240.35.255 | 510 |
| 3 | 127.240.36.0/23 | 127.240.36.0 | 127.240.36.1 | 127.240.37.254 | 127.240.37.255 | 510 |
| 4 | 127.240.38.0/23 | 127.240.38.0 | 127.240.38.1 | 127.240.39.254 | 127.240.39.255 | 510 |
| 5 | 127.240.40.0/23 | 127.240.40.0 | 127.240.40.1 | 127.240.41.254 | 127.240.41.255 | 510 |
| 6 | 127.240.42.0/23 | 127.240.42.0 | 127.240.42.1 | 127.240.43.254 | 127.240.43.255 | 510 |
| 7 | 127.240.44.0/23 | 127.240.44.0 | 127.240.44.1 | 127.240.45.254 | 127.240.45.255 | 510 |
| 8 | 127.240.46.0/23 | 127.240.46.0 | 127.240.46.1 | 127.240.47.254 | 127.240.47.255 | 510 |
| 9 | 127.240.48.0/23 | 127.240.48.0 | 127.240.48.1 | 127.240.49.254 | 127.240.49.255 | 510 |
| 10 | 127.240.50.0/23 | 127.240.50.0 | 127.240.50.1 | 127.240.51.254 | 127.240.51.255 | 510 |
| 11 | 127.240.52.0/23 | 127.240.52.0 | 127.240.52.1 | 127.240.53.254 | 127.240.53.255 | 510 |
| 12 | 127.240.54.0/23 | 127.240.54.0 | 127.240.54.1 | 127.240.55.254 | 127.240.55.255 | 510 |
| 13 | 127.240.56.0/23 | 127.240.56.0 | 127.240.56.1 | 127.240.57.254 | 127.240.57.255 | 510 |
| 14 | 127.240.58.0/23 | 127.240.58.0 | 127.240.58.1 | 127.240.59.254 | 127.240.59.255 | 510 |
| 15 | 127.240.60.0/23 | 127.240.60.0 | 127.240.60.1 | 127.240.61.254 | 127.240.61.255 | 510 |
| 16 | 127.240.62.0/23 | 127.240.62.0 | 127.240.62.1 | 127.240.63.254 | 127.240.63.255 | 510 |