51.237.87.64/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (51.237.87.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 51.237.87.127 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 | 51.237.87.64/26 |
| Network Address | 51.237.87.64 |
| Broadcast Address | 51.237.87.127 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class A |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 51.237.87.65 |
| Last Usable IP | 51.237.87.126 |
| Network (Hex) | 0x33ED5740 |
| Broadcast (Hex) | 0x33ED577F |
| Address Type | Public / Globally Routable |
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 51.237.87.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.87.64/27 | 51.237.87.64 | 51.237.87.65 | 51.237.87.94 | 51.237.87.95 | 30 |
| 2 | 51.237.87.96/27 | 51.237.87.96 | 51.237.87.97 | 51.237.87.126 | 51.237.87.127 | 30 |
Split 51.237.87.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.87.64/28 | 51.237.87.64 | 51.237.87.65 | 51.237.87.78 | 51.237.87.79 | 14 |
| 2 | 51.237.87.80/28 | 51.237.87.80 | 51.237.87.81 | 51.237.87.94 | 51.237.87.95 | 14 |
| 3 | 51.237.87.96/28 | 51.237.87.96 | 51.237.87.97 | 51.237.87.110 | 51.237.87.111 | 14 |
| 4 | 51.237.87.112/28 | 51.237.87.112 | 51.237.87.113 | 51.237.87.126 | 51.237.87.127 | 14 |
Split 51.237.87.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.87.64/29 | 51.237.87.64 | 51.237.87.65 | 51.237.87.70 | 51.237.87.71 | 6 |
| 2 | 51.237.87.72/29 | 51.237.87.72 | 51.237.87.73 | 51.237.87.78 | 51.237.87.79 | 6 |
| 3 | 51.237.87.80/29 | 51.237.87.80 | 51.237.87.81 | 51.237.87.86 | 51.237.87.87 | 6 |
| 4 | 51.237.87.88/29 | 51.237.87.88 | 51.237.87.89 | 51.237.87.94 | 51.237.87.95 | 6 |
| 5 | 51.237.87.96/29 | 51.237.87.96 | 51.237.87.97 | 51.237.87.102 | 51.237.87.103 | 6 |
| 6 | 51.237.87.104/29 | 51.237.87.104 | 51.237.87.105 | 51.237.87.110 | 51.237.87.111 | 6 |
| 7 | 51.237.87.112/29 | 51.237.87.112 | 51.237.87.113 | 51.237.87.118 | 51.237.87.119 | 6 |
| 8 | 51.237.87.120/29 | 51.237.87.120 | 51.237.87.121 | 51.237.87.126 | 51.237.87.127 | 6 |
Split 51.237.87.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 51.237.87.64/30 | 51.237.87.64 | 51.237.87.65 | 51.237.87.66 | 51.237.87.67 | 2 |
| 2 | 51.237.87.68/30 | 51.237.87.68 | 51.237.87.69 | 51.237.87.70 | 51.237.87.71 | 2 |
| 3 | 51.237.87.72/30 | 51.237.87.72 | 51.237.87.73 | 51.237.87.74 | 51.237.87.75 | 2 |
| 4 | 51.237.87.76/30 | 51.237.87.76 | 51.237.87.77 | 51.237.87.78 | 51.237.87.79 | 2 |
| 5 | 51.237.87.80/30 | 51.237.87.80 | 51.237.87.81 | 51.237.87.82 | 51.237.87.83 | 2 |
| 6 | 51.237.87.84/30 | 51.237.87.84 | 51.237.87.85 | 51.237.87.86 | 51.237.87.87 | 2 |
| 7 | 51.237.87.88/30 | 51.237.87.88 | 51.237.87.89 | 51.237.87.90 | 51.237.87.91 | 2 |
| 8 | 51.237.87.92/30 | 51.237.87.92 | 51.237.87.93 | 51.237.87.94 | 51.237.87.95 | 2 |
| 9 | 51.237.87.96/30 | 51.237.87.96 | 51.237.87.97 | 51.237.87.98 | 51.237.87.99 | 2 |
| 10 | 51.237.87.100/30 | 51.237.87.100 | 51.237.87.101 | 51.237.87.102 | 51.237.87.103 | 2 |
| 11 | 51.237.87.104/30 | 51.237.87.104 | 51.237.87.105 | 51.237.87.106 | 51.237.87.107 | 2 |
| 12 | 51.237.87.108/30 | 51.237.87.108 | 51.237.87.109 | 51.237.87.110 | 51.237.87.111 | 2 |
| 13 | 51.237.87.112/30 | 51.237.87.112 | 51.237.87.113 | 51.237.87.114 | 51.237.87.115 | 2 |
| 14 | 51.237.87.116/30 | 51.237.87.116 | 51.237.87.117 | 51.237.87.118 | 51.237.87.119 | 2 |
| 15 | 51.237.87.120/30 | 51.237.87.120 | 51.237.87.121 | 51.237.87.122 | 51.237.87.123 | 2 |
| 16 | 51.237.87.124/30 | 51.237.87.124 | 51.237.87.125 | 51.237.87.126 | 51.237.87.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.