166.66.12.64/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (166.66.12.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 166.66.12.127 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 | 166.66.12.64/26 |
| Network Address | 166.66.12.64 |
| Broadcast Address | 166.66.12.127 |
| 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 | 166.66.12.65 |
| Last Usable IP | 166.66.12.126 |
| Network (Hex) | 0xA6420C40 |
| Broadcast (Hex) | 0xA6420C7F |
| 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 166.66.12.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 166.66.12.64/27 | 166.66.12.64 | 166.66.12.65 | 166.66.12.94 | 166.66.12.95 | 30 |
| 2 | 166.66.12.96/27 | 166.66.12.96 | 166.66.12.97 | 166.66.12.126 | 166.66.12.127 | 30 |
Split 166.66.12.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 166.66.12.64/28 | 166.66.12.64 | 166.66.12.65 | 166.66.12.78 | 166.66.12.79 | 14 |
| 2 | 166.66.12.80/28 | 166.66.12.80 | 166.66.12.81 | 166.66.12.94 | 166.66.12.95 | 14 |
| 3 | 166.66.12.96/28 | 166.66.12.96 | 166.66.12.97 | 166.66.12.110 | 166.66.12.111 | 14 |
| 4 | 166.66.12.112/28 | 166.66.12.112 | 166.66.12.113 | 166.66.12.126 | 166.66.12.127 | 14 |
Split 166.66.12.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 166.66.12.64/29 | 166.66.12.64 | 166.66.12.65 | 166.66.12.70 | 166.66.12.71 | 6 |
| 2 | 166.66.12.72/29 | 166.66.12.72 | 166.66.12.73 | 166.66.12.78 | 166.66.12.79 | 6 |
| 3 | 166.66.12.80/29 | 166.66.12.80 | 166.66.12.81 | 166.66.12.86 | 166.66.12.87 | 6 |
| 4 | 166.66.12.88/29 | 166.66.12.88 | 166.66.12.89 | 166.66.12.94 | 166.66.12.95 | 6 |
| 5 | 166.66.12.96/29 | 166.66.12.96 | 166.66.12.97 | 166.66.12.102 | 166.66.12.103 | 6 |
| 6 | 166.66.12.104/29 | 166.66.12.104 | 166.66.12.105 | 166.66.12.110 | 166.66.12.111 | 6 |
| 7 | 166.66.12.112/29 | 166.66.12.112 | 166.66.12.113 | 166.66.12.118 | 166.66.12.119 | 6 |
| 8 | 166.66.12.120/29 | 166.66.12.120 | 166.66.12.121 | 166.66.12.126 | 166.66.12.127 | 6 |
Split 166.66.12.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 166.66.12.64/30 | 166.66.12.64 | 166.66.12.65 | 166.66.12.66 | 166.66.12.67 | 2 |
| 2 | 166.66.12.68/30 | 166.66.12.68 | 166.66.12.69 | 166.66.12.70 | 166.66.12.71 | 2 |
| 3 | 166.66.12.72/30 | 166.66.12.72 | 166.66.12.73 | 166.66.12.74 | 166.66.12.75 | 2 |
| 4 | 166.66.12.76/30 | 166.66.12.76 | 166.66.12.77 | 166.66.12.78 | 166.66.12.79 | 2 |
| 5 | 166.66.12.80/30 | 166.66.12.80 | 166.66.12.81 | 166.66.12.82 | 166.66.12.83 | 2 |
| 6 | 166.66.12.84/30 | 166.66.12.84 | 166.66.12.85 | 166.66.12.86 | 166.66.12.87 | 2 |
| 7 | 166.66.12.88/30 | 166.66.12.88 | 166.66.12.89 | 166.66.12.90 | 166.66.12.91 | 2 |
| 8 | 166.66.12.92/30 | 166.66.12.92 | 166.66.12.93 | 166.66.12.94 | 166.66.12.95 | 2 |
| 9 | 166.66.12.96/30 | 166.66.12.96 | 166.66.12.97 | 166.66.12.98 | 166.66.12.99 | 2 |
| 10 | 166.66.12.100/30 | 166.66.12.100 | 166.66.12.101 | 166.66.12.102 | 166.66.12.103 | 2 |
| 11 | 166.66.12.104/30 | 166.66.12.104 | 166.66.12.105 | 166.66.12.106 | 166.66.12.107 | 2 |
| 12 | 166.66.12.108/30 | 166.66.12.108 | 166.66.12.109 | 166.66.12.110 | 166.66.12.111 | 2 |
| 13 | 166.66.12.112/30 | 166.66.12.112 | 166.66.12.113 | 166.66.12.114 | 166.66.12.115 | 2 |
| 14 | 166.66.12.116/30 | 166.66.12.116 | 166.66.12.117 | 166.66.12.118 | 166.66.12.119 | 2 |
| 15 | 166.66.12.120/30 | 166.66.12.120 | 166.66.12.121 | 166.66.12.122 | 166.66.12.123 | 2 |
| 16 | 166.66.12.124/30 | 166.66.12.124 | 166.66.12.125 | 166.66.12.126 | 166.66.12.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.