128.188.243.64/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (128.188.243.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 128.188.243.127 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 | 128.188.243.64/26 |
| Network Address | 128.188.243.64 |
| Broadcast Address | 128.188.243.127 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class B |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 128.188.243.65 |
| Last Usable IP | 128.188.243.126 |
| Network (Hex) | 0x80BCF340 |
| Broadcast (Hex) | 0x80BCF37F |
| 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 128.188.243.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.188.243.64/27 | 128.188.243.64 | 128.188.243.65 | 128.188.243.94 | 128.188.243.95 | 30 |
| 2 | 128.188.243.96/27 | 128.188.243.96 | 128.188.243.97 | 128.188.243.126 | 128.188.243.127 | 30 |
Split 128.188.243.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.188.243.64/28 | 128.188.243.64 | 128.188.243.65 | 128.188.243.78 | 128.188.243.79 | 14 |
| 2 | 128.188.243.80/28 | 128.188.243.80 | 128.188.243.81 | 128.188.243.94 | 128.188.243.95 | 14 |
| 3 | 128.188.243.96/28 | 128.188.243.96 | 128.188.243.97 | 128.188.243.110 | 128.188.243.111 | 14 |
| 4 | 128.188.243.112/28 | 128.188.243.112 | 128.188.243.113 | 128.188.243.126 | 128.188.243.127 | 14 |
Split 128.188.243.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.188.243.64/29 | 128.188.243.64 | 128.188.243.65 | 128.188.243.70 | 128.188.243.71 | 6 |
| 2 | 128.188.243.72/29 | 128.188.243.72 | 128.188.243.73 | 128.188.243.78 | 128.188.243.79 | 6 |
| 3 | 128.188.243.80/29 | 128.188.243.80 | 128.188.243.81 | 128.188.243.86 | 128.188.243.87 | 6 |
| 4 | 128.188.243.88/29 | 128.188.243.88 | 128.188.243.89 | 128.188.243.94 | 128.188.243.95 | 6 |
| 5 | 128.188.243.96/29 | 128.188.243.96 | 128.188.243.97 | 128.188.243.102 | 128.188.243.103 | 6 |
| 6 | 128.188.243.104/29 | 128.188.243.104 | 128.188.243.105 | 128.188.243.110 | 128.188.243.111 | 6 |
| 7 | 128.188.243.112/29 | 128.188.243.112 | 128.188.243.113 | 128.188.243.118 | 128.188.243.119 | 6 |
| 8 | 128.188.243.120/29 | 128.188.243.120 | 128.188.243.121 | 128.188.243.126 | 128.188.243.127 | 6 |
Split 128.188.243.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.188.243.64/30 | 128.188.243.64 | 128.188.243.65 | 128.188.243.66 | 128.188.243.67 | 2 |
| 2 | 128.188.243.68/30 | 128.188.243.68 | 128.188.243.69 | 128.188.243.70 | 128.188.243.71 | 2 |
| 3 | 128.188.243.72/30 | 128.188.243.72 | 128.188.243.73 | 128.188.243.74 | 128.188.243.75 | 2 |
| 4 | 128.188.243.76/30 | 128.188.243.76 | 128.188.243.77 | 128.188.243.78 | 128.188.243.79 | 2 |
| 5 | 128.188.243.80/30 | 128.188.243.80 | 128.188.243.81 | 128.188.243.82 | 128.188.243.83 | 2 |
| 6 | 128.188.243.84/30 | 128.188.243.84 | 128.188.243.85 | 128.188.243.86 | 128.188.243.87 | 2 |
| 7 | 128.188.243.88/30 | 128.188.243.88 | 128.188.243.89 | 128.188.243.90 | 128.188.243.91 | 2 |
| 8 | 128.188.243.92/30 | 128.188.243.92 | 128.188.243.93 | 128.188.243.94 | 128.188.243.95 | 2 |
| 9 | 128.188.243.96/30 | 128.188.243.96 | 128.188.243.97 | 128.188.243.98 | 128.188.243.99 | 2 |
| 10 | 128.188.243.100/30 | 128.188.243.100 | 128.188.243.101 | 128.188.243.102 | 128.188.243.103 | 2 |
| 11 | 128.188.243.104/30 | 128.188.243.104 | 128.188.243.105 | 128.188.243.106 | 128.188.243.107 | 2 |
| 12 | 128.188.243.108/30 | 128.188.243.108 | 128.188.243.109 | 128.188.243.110 | 128.188.243.111 | 2 |
| 13 | 128.188.243.112/30 | 128.188.243.112 | 128.188.243.113 | 128.188.243.114 | 128.188.243.115 | 2 |
| 14 | 128.188.243.116/30 | 128.188.243.116 | 128.188.243.117 | 128.188.243.118 | 128.188.243.119 | 2 |
| 15 | 128.188.243.120/30 | 128.188.243.120 | 128.188.243.121 | 128.188.243.122 | 128.188.243.123 | 2 |
| 16 | 128.188.243.124/30 | 128.188.243.124 | 128.188.243.125 | 128.188.243.126 | 128.188.243.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.