86.72.0.0/19
PublicClass A — /19 prefix — 8,190 usable hosts
Network address — the base address of the block (86.72.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 86.72.31.255 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 | 86.72.0.0/19 |
| Network Address | 86.72.0.0 |
| Broadcast Address | 86.72.31.255 |
| 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 | 86.72.0.1 |
| Last Usable IP | 86.72.31.254 |
| Network (Hex) | 0x56480000 |
| Broadcast (Hex) | 0x56481FFF |
| Address Type | Public / Globally Routable |
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 86.72.0.0/19 into 2 equal /20 subnets (4,094 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 86.72.0.0/20 | 86.72.0.0 | 86.72.0.1 | 86.72.15.254 | 86.72.15.255 | 4,094 |
| 2 | 86.72.16.0/20 | 86.72.16.0 | 86.72.16.1 | 86.72.31.254 | 86.72.31.255 | 4,094 |
Split 86.72.0.0/19 into 4 equal /21 subnets (2,046 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 86.72.0.0/21 | 86.72.0.0 | 86.72.0.1 | 86.72.7.254 | 86.72.7.255 | 2,046 |
| 2 | 86.72.8.0/21 | 86.72.8.0 | 86.72.8.1 | 86.72.15.254 | 86.72.15.255 | 2,046 |
| 3 | 86.72.16.0/21 | 86.72.16.0 | 86.72.16.1 | 86.72.23.254 | 86.72.23.255 | 2,046 |
| 4 | 86.72.24.0/21 | 86.72.24.0 | 86.72.24.1 | 86.72.31.254 | 86.72.31.255 | 2,046 |
Split 86.72.0.0/19 into 8 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 86.72.0.0/22 | 86.72.0.0 | 86.72.0.1 | 86.72.3.254 | 86.72.3.255 | 1,022 |
| 2 | 86.72.4.0/22 | 86.72.4.0 | 86.72.4.1 | 86.72.7.254 | 86.72.7.255 | 1,022 |
| 3 | 86.72.8.0/22 | 86.72.8.0 | 86.72.8.1 | 86.72.11.254 | 86.72.11.255 | 1,022 |
| 4 | 86.72.12.0/22 | 86.72.12.0 | 86.72.12.1 | 86.72.15.254 | 86.72.15.255 | 1,022 |
| 5 | 86.72.16.0/22 | 86.72.16.0 | 86.72.16.1 | 86.72.19.254 | 86.72.19.255 | 1,022 |
| 6 | 86.72.20.0/22 | 86.72.20.0 | 86.72.20.1 | 86.72.23.254 | 86.72.23.255 | 1,022 |
| 7 | 86.72.24.0/22 | 86.72.24.0 | 86.72.24.1 | 86.72.27.254 | 86.72.27.255 | 1,022 |
| 8 | 86.72.28.0/22 | 86.72.28.0 | 86.72.28.1 | 86.72.31.254 | 86.72.31.255 | 1,022 |
Split 86.72.0.0/19 into 16 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 86.72.0.0/23 | 86.72.0.0 | 86.72.0.1 | 86.72.1.254 | 86.72.1.255 | 510 |
| 2 | 86.72.2.0/23 | 86.72.2.0 | 86.72.2.1 | 86.72.3.254 | 86.72.3.255 | 510 |
| 3 | 86.72.4.0/23 | 86.72.4.0 | 86.72.4.1 | 86.72.5.254 | 86.72.5.255 | 510 |
| 4 | 86.72.6.0/23 | 86.72.6.0 | 86.72.6.1 | 86.72.7.254 | 86.72.7.255 | 510 |
| 5 | 86.72.8.0/23 | 86.72.8.0 | 86.72.8.1 | 86.72.9.254 | 86.72.9.255 | 510 |
| 6 | 86.72.10.0/23 | 86.72.10.0 | 86.72.10.1 | 86.72.11.254 | 86.72.11.255 | 510 |
| 7 | 86.72.12.0/23 | 86.72.12.0 | 86.72.12.1 | 86.72.13.254 | 86.72.13.255 | 510 |
| 8 | 86.72.14.0/23 | 86.72.14.0 | 86.72.14.1 | 86.72.15.254 | 86.72.15.255 | 510 |
| 9 | 86.72.16.0/23 | 86.72.16.0 | 86.72.16.1 | 86.72.17.254 | 86.72.17.255 | 510 |
| 10 | 86.72.18.0/23 | 86.72.18.0 | 86.72.18.1 | 86.72.19.254 | 86.72.19.255 | 510 |
| 11 | 86.72.20.0/23 | 86.72.20.0 | 86.72.20.1 | 86.72.21.254 | 86.72.21.255 | 510 |
| 12 | 86.72.22.0/23 | 86.72.22.0 | 86.72.22.1 | 86.72.23.254 | 86.72.23.255 | 510 |
| 13 | 86.72.24.0/23 | 86.72.24.0 | 86.72.24.1 | 86.72.25.254 | 86.72.25.255 | 510 |
| 14 | 86.72.26.0/23 | 86.72.26.0 | 86.72.26.1 | 86.72.27.254 | 86.72.27.255 | 510 |
| 15 | 86.72.28.0/23 | 86.72.28.0 | 86.72.28.1 | 86.72.29.254 | 86.72.29.255 | 510 |
| 16 | 86.72.30.0/23 | 86.72.30.0 | 86.72.30.1 | 86.72.31.254 | 86.72.31.255 | 510 |