100.121.134.64/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (100.121.134.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 100.121.134.127 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 | 100.121.134.64/26 |
| Network Address | 100.121.134.64 |
| Broadcast Address | 100.121.134.127 |
| 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 | 100.121.134.65 |
| Last Usable IP | 100.121.134.126 |
| Network (Hex) | 0x64798640 |
| Broadcast (Hex) | 0x6479867F |
| 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 100.121.134.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.134.64/27 | 100.121.134.64 | 100.121.134.65 | 100.121.134.94 | 100.121.134.95 | 30 |
| 2 | 100.121.134.96/27 | 100.121.134.96 | 100.121.134.97 | 100.121.134.126 | 100.121.134.127 | 30 |
Split 100.121.134.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.134.64/28 | 100.121.134.64 | 100.121.134.65 | 100.121.134.78 | 100.121.134.79 | 14 |
| 2 | 100.121.134.80/28 | 100.121.134.80 | 100.121.134.81 | 100.121.134.94 | 100.121.134.95 | 14 |
| 3 | 100.121.134.96/28 | 100.121.134.96 | 100.121.134.97 | 100.121.134.110 | 100.121.134.111 | 14 |
| 4 | 100.121.134.112/28 | 100.121.134.112 | 100.121.134.113 | 100.121.134.126 | 100.121.134.127 | 14 |
Split 100.121.134.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.134.64/29 | 100.121.134.64 | 100.121.134.65 | 100.121.134.70 | 100.121.134.71 | 6 |
| 2 | 100.121.134.72/29 | 100.121.134.72 | 100.121.134.73 | 100.121.134.78 | 100.121.134.79 | 6 |
| 3 | 100.121.134.80/29 | 100.121.134.80 | 100.121.134.81 | 100.121.134.86 | 100.121.134.87 | 6 |
| 4 | 100.121.134.88/29 | 100.121.134.88 | 100.121.134.89 | 100.121.134.94 | 100.121.134.95 | 6 |
| 5 | 100.121.134.96/29 | 100.121.134.96 | 100.121.134.97 | 100.121.134.102 | 100.121.134.103 | 6 |
| 6 | 100.121.134.104/29 | 100.121.134.104 | 100.121.134.105 | 100.121.134.110 | 100.121.134.111 | 6 |
| 7 | 100.121.134.112/29 | 100.121.134.112 | 100.121.134.113 | 100.121.134.118 | 100.121.134.119 | 6 |
| 8 | 100.121.134.120/29 | 100.121.134.120 | 100.121.134.121 | 100.121.134.126 | 100.121.134.127 | 6 |
Split 100.121.134.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.134.64/30 | 100.121.134.64 | 100.121.134.65 | 100.121.134.66 | 100.121.134.67 | 2 |
| 2 | 100.121.134.68/30 | 100.121.134.68 | 100.121.134.69 | 100.121.134.70 | 100.121.134.71 | 2 |
| 3 | 100.121.134.72/30 | 100.121.134.72 | 100.121.134.73 | 100.121.134.74 | 100.121.134.75 | 2 |
| 4 | 100.121.134.76/30 | 100.121.134.76 | 100.121.134.77 | 100.121.134.78 | 100.121.134.79 | 2 |
| 5 | 100.121.134.80/30 | 100.121.134.80 | 100.121.134.81 | 100.121.134.82 | 100.121.134.83 | 2 |
| 6 | 100.121.134.84/30 | 100.121.134.84 | 100.121.134.85 | 100.121.134.86 | 100.121.134.87 | 2 |
| 7 | 100.121.134.88/30 | 100.121.134.88 | 100.121.134.89 | 100.121.134.90 | 100.121.134.91 | 2 |
| 8 | 100.121.134.92/30 | 100.121.134.92 | 100.121.134.93 | 100.121.134.94 | 100.121.134.95 | 2 |
| 9 | 100.121.134.96/30 | 100.121.134.96 | 100.121.134.97 | 100.121.134.98 | 100.121.134.99 | 2 |
| 10 | 100.121.134.100/30 | 100.121.134.100 | 100.121.134.101 | 100.121.134.102 | 100.121.134.103 | 2 |
| 11 | 100.121.134.104/30 | 100.121.134.104 | 100.121.134.105 | 100.121.134.106 | 100.121.134.107 | 2 |
| 12 | 100.121.134.108/30 | 100.121.134.108 | 100.121.134.109 | 100.121.134.110 | 100.121.134.111 | 2 |
| 13 | 100.121.134.112/30 | 100.121.134.112 | 100.121.134.113 | 100.121.134.114 | 100.121.134.115 | 2 |
| 14 | 100.121.134.116/30 | 100.121.134.116 | 100.121.134.117 | 100.121.134.118 | 100.121.134.119 | 2 |
| 15 | 100.121.134.120/30 | 100.121.134.120 | 100.121.134.121 | 100.121.134.122 | 100.121.134.123 | 2 |
| 16 | 100.121.134.124/30 | 100.121.134.124 | 100.121.134.125 | 100.121.134.126 | 100.121.134.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.