231.31.172.64/26
Multicast RFC 5771Class D (Multicast) — /26 prefix — 62 usable hosts
Network address — the base address of the block (231.31.172.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 231.31.172.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 231.31.172.64/26 |
| Network Address | 231.31.172.64 |
| Broadcast Address | 231.31.172.127 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 231.31.172.65 |
| Last Usable IP | 231.31.172.126 |
| Network (Hex) | 0xE71FAC40 |
| Broadcast (Hex) | 0xE71FAC7F |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 231.31.172.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.31.172.64/27 | 231.31.172.64 | 231.31.172.65 | 231.31.172.94 | 231.31.172.95 | 30 |
| 2 | 231.31.172.96/27 | 231.31.172.96 | 231.31.172.97 | 231.31.172.126 | 231.31.172.127 | 30 |
Split 231.31.172.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.31.172.64/28 | 231.31.172.64 | 231.31.172.65 | 231.31.172.78 | 231.31.172.79 | 14 |
| 2 | 231.31.172.80/28 | 231.31.172.80 | 231.31.172.81 | 231.31.172.94 | 231.31.172.95 | 14 |
| 3 | 231.31.172.96/28 | 231.31.172.96 | 231.31.172.97 | 231.31.172.110 | 231.31.172.111 | 14 |
| 4 | 231.31.172.112/28 | 231.31.172.112 | 231.31.172.113 | 231.31.172.126 | 231.31.172.127 | 14 |
Split 231.31.172.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.31.172.64/29 | 231.31.172.64 | 231.31.172.65 | 231.31.172.70 | 231.31.172.71 | 6 |
| 2 | 231.31.172.72/29 | 231.31.172.72 | 231.31.172.73 | 231.31.172.78 | 231.31.172.79 | 6 |
| 3 | 231.31.172.80/29 | 231.31.172.80 | 231.31.172.81 | 231.31.172.86 | 231.31.172.87 | 6 |
| 4 | 231.31.172.88/29 | 231.31.172.88 | 231.31.172.89 | 231.31.172.94 | 231.31.172.95 | 6 |
| 5 | 231.31.172.96/29 | 231.31.172.96 | 231.31.172.97 | 231.31.172.102 | 231.31.172.103 | 6 |
| 6 | 231.31.172.104/29 | 231.31.172.104 | 231.31.172.105 | 231.31.172.110 | 231.31.172.111 | 6 |
| 7 | 231.31.172.112/29 | 231.31.172.112 | 231.31.172.113 | 231.31.172.118 | 231.31.172.119 | 6 |
| 8 | 231.31.172.120/29 | 231.31.172.120 | 231.31.172.121 | 231.31.172.126 | 231.31.172.127 | 6 |
Split 231.31.172.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 231.31.172.64/30 | 231.31.172.64 | 231.31.172.65 | 231.31.172.66 | 231.31.172.67 | 2 |
| 2 | 231.31.172.68/30 | 231.31.172.68 | 231.31.172.69 | 231.31.172.70 | 231.31.172.71 | 2 |
| 3 | 231.31.172.72/30 | 231.31.172.72 | 231.31.172.73 | 231.31.172.74 | 231.31.172.75 | 2 |
| 4 | 231.31.172.76/30 | 231.31.172.76 | 231.31.172.77 | 231.31.172.78 | 231.31.172.79 | 2 |
| 5 | 231.31.172.80/30 | 231.31.172.80 | 231.31.172.81 | 231.31.172.82 | 231.31.172.83 | 2 |
| 6 | 231.31.172.84/30 | 231.31.172.84 | 231.31.172.85 | 231.31.172.86 | 231.31.172.87 | 2 |
| 7 | 231.31.172.88/30 | 231.31.172.88 | 231.31.172.89 | 231.31.172.90 | 231.31.172.91 | 2 |
| 8 | 231.31.172.92/30 | 231.31.172.92 | 231.31.172.93 | 231.31.172.94 | 231.31.172.95 | 2 |
| 9 | 231.31.172.96/30 | 231.31.172.96 | 231.31.172.97 | 231.31.172.98 | 231.31.172.99 | 2 |
| 10 | 231.31.172.100/30 | 231.31.172.100 | 231.31.172.101 | 231.31.172.102 | 231.31.172.103 | 2 |
| 11 | 231.31.172.104/30 | 231.31.172.104 | 231.31.172.105 | 231.31.172.106 | 231.31.172.107 | 2 |
| 12 | 231.31.172.108/30 | 231.31.172.108 | 231.31.172.109 | 231.31.172.110 | 231.31.172.111 | 2 |
| 13 | 231.31.172.112/30 | 231.31.172.112 | 231.31.172.113 | 231.31.172.114 | 231.31.172.115 | 2 |
| 14 | 231.31.172.116/30 | 231.31.172.116 | 231.31.172.117 | 231.31.172.118 | 231.31.172.119 | 2 |
| 15 | 231.31.172.120/30 | 231.31.172.120 | 231.31.172.121 | 231.31.172.122 | 231.31.172.123 | 2 |
| 16 | 231.31.172.124/30 | 231.31.172.124 | 231.31.172.125 | 231.31.172.126 | 231.31.172.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.