28.80.64.64/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (28.80.64.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 28.80.64.127 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 | 28.80.64.64/26 |
| Network Address | 28.80.64.64 |
| Broadcast Address | 28.80.64.127 |
| 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 | 28.80.64.65 |
| Last Usable IP | 28.80.64.126 |
| Network (Hex) | 0x1C504040 |
| Broadcast (Hex) | 0x1C50407F |
| 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 28.80.64.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.80.64.64/27 | 28.80.64.64 | 28.80.64.65 | 28.80.64.94 | 28.80.64.95 | 30 |
| 2 | 28.80.64.96/27 | 28.80.64.96 | 28.80.64.97 | 28.80.64.126 | 28.80.64.127 | 30 |
Split 28.80.64.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.80.64.64/28 | 28.80.64.64 | 28.80.64.65 | 28.80.64.78 | 28.80.64.79 | 14 |
| 2 | 28.80.64.80/28 | 28.80.64.80 | 28.80.64.81 | 28.80.64.94 | 28.80.64.95 | 14 |
| 3 | 28.80.64.96/28 | 28.80.64.96 | 28.80.64.97 | 28.80.64.110 | 28.80.64.111 | 14 |
| 4 | 28.80.64.112/28 | 28.80.64.112 | 28.80.64.113 | 28.80.64.126 | 28.80.64.127 | 14 |
Split 28.80.64.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.80.64.64/29 | 28.80.64.64 | 28.80.64.65 | 28.80.64.70 | 28.80.64.71 | 6 |
| 2 | 28.80.64.72/29 | 28.80.64.72 | 28.80.64.73 | 28.80.64.78 | 28.80.64.79 | 6 |
| 3 | 28.80.64.80/29 | 28.80.64.80 | 28.80.64.81 | 28.80.64.86 | 28.80.64.87 | 6 |
| 4 | 28.80.64.88/29 | 28.80.64.88 | 28.80.64.89 | 28.80.64.94 | 28.80.64.95 | 6 |
| 5 | 28.80.64.96/29 | 28.80.64.96 | 28.80.64.97 | 28.80.64.102 | 28.80.64.103 | 6 |
| 6 | 28.80.64.104/29 | 28.80.64.104 | 28.80.64.105 | 28.80.64.110 | 28.80.64.111 | 6 |
| 7 | 28.80.64.112/29 | 28.80.64.112 | 28.80.64.113 | 28.80.64.118 | 28.80.64.119 | 6 |
| 8 | 28.80.64.120/29 | 28.80.64.120 | 28.80.64.121 | 28.80.64.126 | 28.80.64.127 | 6 |
Split 28.80.64.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 28.80.64.64/30 | 28.80.64.64 | 28.80.64.65 | 28.80.64.66 | 28.80.64.67 | 2 |
| 2 | 28.80.64.68/30 | 28.80.64.68 | 28.80.64.69 | 28.80.64.70 | 28.80.64.71 | 2 |
| 3 | 28.80.64.72/30 | 28.80.64.72 | 28.80.64.73 | 28.80.64.74 | 28.80.64.75 | 2 |
| 4 | 28.80.64.76/30 | 28.80.64.76 | 28.80.64.77 | 28.80.64.78 | 28.80.64.79 | 2 |
| 5 | 28.80.64.80/30 | 28.80.64.80 | 28.80.64.81 | 28.80.64.82 | 28.80.64.83 | 2 |
| 6 | 28.80.64.84/30 | 28.80.64.84 | 28.80.64.85 | 28.80.64.86 | 28.80.64.87 | 2 |
| 7 | 28.80.64.88/30 | 28.80.64.88 | 28.80.64.89 | 28.80.64.90 | 28.80.64.91 | 2 |
| 8 | 28.80.64.92/30 | 28.80.64.92 | 28.80.64.93 | 28.80.64.94 | 28.80.64.95 | 2 |
| 9 | 28.80.64.96/30 | 28.80.64.96 | 28.80.64.97 | 28.80.64.98 | 28.80.64.99 | 2 |
| 10 | 28.80.64.100/30 | 28.80.64.100 | 28.80.64.101 | 28.80.64.102 | 28.80.64.103 | 2 |
| 11 | 28.80.64.104/30 | 28.80.64.104 | 28.80.64.105 | 28.80.64.106 | 28.80.64.107 | 2 |
| 12 | 28.80.64.108/30 | 28.80.64.108 | 28.80.64.109 | 28.80.64.110 | 28.80.64.111 | 2 |
| 13 | 28.80.64.112/30 | 28.80.64.112 | 28.80.64.113 | 28.80.64.114 | 28.80.64.115 | 2 |
| 14 | 28.80.64.116/30 | 28.80.64.116 | 28.80.64.117 | 28.80.64.118 | 28.80.64.119 | 2 |
| 15 | 28.80.64.120/30 | 28.80.64.120 | 28.80.64.121 | 28.80.64.122 | 28.80.64.123 | 2 |
| 16 | 28.80.64.124/30 | 28.80.64.124 | 28.80.64.125 | 28.80.64.126 | 28.80.64.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.