40.65.21.64/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (40.65.21.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 40.65.21.127 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 | 40.65.21.64/26 |
| Network Address | 40.65.21.64 |
| Broadcast Address | 40.65.21.127 |
| 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 | 40.65.21.65 |
| Last Usable IP | 40.65.21.126 |
| Network (Hex) | 0x28411540 |
| Broadcast (Hex) | 0x2841157F |
| 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 40.65.21.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 40.65.21.64/27 | 40.65.21.64 | 40.65.21.65 | 40.65.21.94 | 40.65.21.95 | 30 |
| 2 | 40.65.21.96/27 | 40.65.21.96 | 40.65.21.97 | 40.65.21.126 | 40.65.21.127 | 30 |
Split 40.65.21.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 40.65.21.64/28 | 40.65.21.64 | 40.65.21.65 | 40.65.21.78 | 40.65.21.79 | 14 |
| 2 | 40.65.21.80/28 | 40.65.21.80 | 40.65.21.81 | 40.65.21.94 | 40.65.21.95 | 14 |
| 3 | 40.65.21.96/28 | 40.65.21.96 | 40.65.21.97 | 40.65.21.110 | 40.65.21.111 | 14 |
| 4 | 40.65.21.112/28 | 40.65.21.112 | 40.65.21.113 | 40.65.21.126 | 40.65.21.127 | 14 |
Split 40.65.21.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 40.65.21.64/29 | 40.65.21.64 | 40.65.21.65 | 40.65.21.70 | 40.65.21.71 | 6 |
| 2 | 40.65.21.72/29 | 40.65.21.72 | 40.65.21.73 | 40.65.21.78 | 40.65.21.79 | 6 |
| 3 | 40.65.21.80/29 | 40.65.21.80 | 40.65.21.81 | 40.65.21.86 | 40.65.21.87 | 6 |
| 4 | 40.65.21.88/29 | 40.65.21.88 | 40.65.21.89 | 40.65.21.94 | 40.65.21.95 | 6 |
| 5 | 40.65.21.96/29 | 40.65.21.96 | 40.65.21.97 | 40.65.21.102 | 40.65.21.103 | 6 |
| 6 | 40.65.21.104/29 | 40.65.21.104 | 40.65.21.105 | 40.65.21.110 | 40.65.21.111 | 6 |
| 7 | 40.65.21.112/29 | 40.65.21.112 | 40.65.21.113 | 40.65.21.118 | 40.65.21.119 | 6 |
| 8 | 40.65.21.120/29 | 40.65.21.120 | 40.65.21.121 | 40.65.21.126 | 40.65.21.127 | 6 |
Split 40.65.21.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 40.65.21.64/30 | 40.65.21.64 | 40.65.21.65 | 40.65.21.66 | 40.65.21.67 | 2 |
| 2 | 40.65.21.68/30 | 40.65.21.68 | 40.65.21.69 | 40.65.21.70 | 40.65.21.71 | 2 |
| 3 | 40.65.21.72/30 | 40.65.21.72 | 40.65.21.73 | 40.65.21.74 | 40.65.21.75 | 2 |
| 4 | 40.65.21.76/30 | 40.65.21.76 | 40.65.21.77 | 40.65.21.78 | 40.65.21.79 | 2 |
| 5 | 40.65.21.80/30 | 40.65.21.80 | 40.65.21.81 | 40.65.21.82 | 40.65.21.83 | 2 |
| 6 | 40.65.21.84/30 | 40.65.21.84 | 40.65.21.85 | 40.65.21.86 | 40.65.21.87 | 2 |
| 7 | 40.65.21.88/30 | 40.65.21.88 | 40.65.21.89 | 40.65.21.90 | 40.65.21.91 | 2 |
| 8 | 40.65.21.92/30 | 40.65.21.92 | 40.65.21.93 | 40.65.21.94 | 40.65.21.95 | 2 |
| 9 | 40.65.21.96/30 | 40.65.21.96 | 40.65.21.97 | 40.65.21.98 | 40.65.21.99 | 2 |
| 10 | 40.65.21.100/30 | 40.65.21.100 | 40.65.21.101 | 40.65.21.102 | 40.65.21.103 | 2 |
| 11 | 40.65.21.104/30 | 40.65.21.104 | 40.65.21.105 | 40.65.21.106 | 40.65.21.107 | 2 |
| 12 | 40.65.21.108/30 | 40.65.21.108 | 40.65.21.109 | 40.65.21.110 | 40.65.21.111 | 2 |
| 13 | 40.65.21.112/30 | 40.65.21.112 | 40.65.21.113 | 40.65.21.114 | 40.65.21.115 | 2 |
| 14 | 40.65.21.116/30 | 40.65.21.116 | 40.65.21.117 | 40.65.21.118 | 40.65.21.119 | 2 |
| 15 | 40.65.21.120/30 | 40.65.21.120 | 40.65.21.121 | 40.65.21.122 | 40.65.21.123 | 2 |
| 16 | 40.65.21.124/30 | 40.65.21.124 | 40.65.21.125 | 40.65.21.126 | 40.65.21.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.