231.231.160.0/20
Multicast RFC 5771Class D (Multicast) — /20 prefix — 4,094 usable hosts
Network address — the base address of the block (231.231.160.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 231.231.175.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 4,094 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.240.0 is the dotted-decimal equivalent of /20. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 231.231.160.0/20 |
| Network Address | 231.231.160.0 |
| Broadcast Address | 231.231.175.255 |
| Subnet Mask | 255.255.240.0 |
| Wildcard Mask | 0.0.15.255 |
| Prefix Length | /20 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 4,096 |
| Usable Host Addresses | 4,094 |
| First Usable IP | 231.231.160.1 |
| Last Usable IP | 231.231.175.254 |
| Network (Hex) | 0xE7E7A000 |
| Broadcast (Hex) | 0xE7E7AFFF |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
The first 20 bits (1s in the mask) identify the network. The remaining 12 bits identify hosts within the network.
Split into Equal Subnets
Split 231.231.160.0/20 into 2 equal /21 subnets (2,046 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.231.160.0/21 | 231.231.160.0 | 231.231.160.1 | 231.231.167.254 | 231.231.167.255 | 2,046 |
| 2 | 231.231.168.0/21 | 231.231.168.0 | 231.231.168.1 | 231.231.175.254 | 231.231.175.255 | 2,046 |
Split 231.231.160.0/20 into 4 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.231.160.0/22 | 231.231.160.0 | 231.231.160.1 | 231.231.163.254 | 231.231.163.255 | 1,022 |
| 2 | 231.231.164.0/22 | 231.231.164.0 | 231.231.164.1 | 231.231.167.254 | 231.231.167.255 | 1,022 |
| 3 | 231.231.168.0/22 | 231.231.168.0 | 231.231.168.1 | 231.231.171.254 | 231.231.171.255 | 1,022 |
| 4 | 231.231.172.0/22 | 231.231.172.0 | 231.231.172.1 | 231.231.175.254 | 231.231.175.255 | 1,022 |
Split 231.231.160.0/20 into 8 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.231.160.0/23 | 231.231.160.0 | 231.231.160.1 | 231.231.161.254 | 231.231.161.255 | 510 |
| 2 | 231.231.162.0/23 | 231.231.162.0 | 231.231.162.1 | 231.231.163.254 | 231.231.163.255 | 510 |
| 3 | 231.231.164.0/23 | 231.231.164.0 | 231.231.164.1 | 231.231.165.254 | 231.231.165.255 | 510 |
| 4 | 231.231.166.0/23 | 231.231.166.0 | 231.231.166.1 | 231.231.167.254 | 231.231.167.255 | 510 |
| 5 | 231.231.168.0/23 | 231.231.168.0 | 231.231.168.1 | 231.231.169.254 | 231.231.169.255 | 510 |
| 6 | 231.231.170.0/23 | 231.231.170.0 | 231.231.170.1 | 231.231.171.254 | 231.231.171.255 | 510 |
| 7 | 231.231.172.0/23 | 231.231.172.0 | 231.231.172.1 | 231.231.173.254 | 231.231.173.255 | 510 |
| 8 | 231.231.174.0/23 | 231.231.174.0 | 231.231.174.1 | 231.231.175.254 | 231.231.175.255 | 510 |
Split 231.231.160.0/20 into 16 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.231.160.0/24 | 231.231.160.0 | 231.231.160.1 | 231.231.160.254 | 231.231.160.255 | 254 |
| 2 | 231.231.161.0/24 | 231.231.161.0 | 231.231.161.1 | 231.231.161.254 | 231.231.161.255 | 254 |
| 3 | 231.231.162.0/24 | 231.231.162.0 | 231.231.162.1 | 231.231.162.254 | 231.231.162.255 | 254 |
| 4 | 231.231.163.0/24 | 231.231.163.0 | 231.231.163.1 | 231.231.163.254 | 231.231.163.255 | 254 |
| 5 | 231.231.164.0/24 | 231.231.164.0 | 231.231.164.1 | 231.231.164.254 | 231.231.164.255 | 254 |
| 6 | 231.231.165.0/24 | 231.231.165.0 | 231.231.165.1 | 231.231.165.254 | 231.231.165.255 | 254 |
| 7 | 231.231.166.0/24 | 231.231.166.0 | 231.231.166.1 | 231.231.166.254 | 231.231.166.255 | 254 |
| 8 | 231.231.167.0/24 | 231.231.167.0 | 231.231.167.1 | 231.231.167.254 | 231.231.167.255 | 254 |
| 9 | 231.231.168.0/24 | 231.231.168.0 | 231.231.168.1 | 231.231.168.254 | 231.231.168.255 | 254 |
| 10 | 231.231.169.0/24 | 231.231.169.0 | 231.231.169.1 | 231.231.169.254 | 231.231.169.255 | 254 |
| 11 | 231.231.170.0/24 | 231.231.170.0 | 231.231.170.1 | 231.231.170.254 | 231.231.170.255 | 254 |
| 12 | 231.231.171.0/24 | 231.231.171.0 | 231.231.171.1 | 231.231.171.254 | 231.231.171.255 | 254 |
| 13 | 231.231.172.0/24 | 231.231.172.0 | 231.231.172.1 | 231.231.172.254 | 231.231.172.255 | 254 |
| 14 | 231.231.173.0/24 | 231.231.173.0 | 231.231.173.1 | 231.231.173.254 | 231.231.173.255 | 254 |
| 15 | 231.231.174.0/24 | 231.231.174.0 | 231.231.174.1 | 231.231.174.254 | 231.231.174.255 | 254 |
| 16 | 231.231.175.0/24 | 231.231.175.0 | 231.231.175.1 | 231.231.175.254 | 231.231.175.255 | 254 |