100.121.161.64/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (100.121.161.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 100.121.161.127 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 | 100.121.161.64/26 |
| Network Address | 100.121.161.64 |
| Broadcast Address | 100.121.161.127 |
| 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 | 100.121.161.65 |
| Last Usable IP | 100.121.161.126 |
| Network (Hex) | 0x6479A140 |
| Broadcast (Hex) | 0x6479A17F |
| 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 100.121.161.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.161.64/27 | 100.121.161.64 | 100.121.161.65 | 100.121.161.94 | 100.121.161.95 | 30 |
| 2 | 100.121.161.96/27 | 100.121.161.96 | 100.121.161.97 | 100.121.161.126 | 100.121.161.127 | 30 |
Split 100.121.161.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.161.64/28 | 100.121.161.64 | 100.121.161.65 | 100.121.161.78 | 100.121.161.79 | 14 |
| 2 | 100.121.161.80/28 | 100.121.161.80 | 100.121.161.81 | 100.121.161.94 | 100.121.161.95 | 14 |
| 3 | 100.121.161.96/28 | 100.121.161.96 | 100.121.161.97 | 100.121.161.110 | 100.121.161.111 | 14 |
| 4 | 100.121.161.112/28 | 100.121.161.112 | 100.121.161.113 | 100.121.161.126 | 100.121.161.127 | 14 |
Split 100.121.161.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.161.64/29 | 100.121.161.64 | 100.121.161.65 | 100.121.161.70 | 100.121.161.71 | 6 |
| 2 | 100.121.161.72/29 | 100.121.161.72 | 100.121.161.73 | 100.121.161.78 | 100.121.161.79 | 6 |
| 3 | 100.121.161.80/29 | 100.121.161.80 | 100.121.161.81 | 100.121.161.86 | 100.121.161.87 | 6 |
| 4 | 100.121.161.88/29 | 100.121.161.88 | 100.121.161.89 | 100.121.161.94 | 100.121.161.95 | 6 |
| 5 | 100.121.161.96/29 | 100.121.161.96 | 100.121.161.97 | 100.121.161.102 | 100.121.161.103 | 6 |
| 6 | 100.121.161.104/29 | 100.121.161.104 | 100.121.161.105 | 100.121.161.110 | 100.121.161.111 | 6 |
| 7 | 100.121.161.112/29 | 100.121.161.112 | 100.121.161.113 | 100.121.161.118 | 100.121.161.119 | 6 |
| 8 | 100.121.161.120/29 | 100.121.161.120 | 100.121.161.121 | 100.121.161.126 | 100.121.161.127 | 6 |
Split 100.121.161.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.121.161.64/30 | 100.121.161.64 | 100.121.161.65 | 100.121.161.66 | 100.121.161.67 | 2 |
| 2 | 100.121.161.68/30 | 100.121.161.68 | 100.121.161.69 | 100.121.161.70 | 100.121.161.71 | 2 |
| 3 | 100.121.161.72/30 | 100.121.161.72 | 100.121.161.73 | 100.121.161.74 | 100.121.161.75 | 2 |
| 4 | 100.121.161.76/30 | 100.121.161.76 | 100.121.161.77 | 100.121.161.78 | 100.121.161.79 | 2 |
| 5 | 100.121.161.80/30 | 100.121.161.80 | 100.121.161.81 | 100.121.161.82 | 100.121.161.83 | 2 |
| 6 | 100.121.161.84/30 | 100.121.161.84 | 100.121.161.85 | 100.121.161.86 | 100.121.161.87 | 2 |
| 7 | 100.121.161.88/30 | 100.121.161.88 | 100.121.161.89 | 100.121.161.90 | 100.121.161.91 | 2 |
| 8 | 100.121.161.92/30 | 100.121.161.92 | 100.121.161.93 | 100.121.161.94 | 100.121.161.95 | 2 |
| 9 | 100.121.161.96/30 | 100.121.161.96 | 100.121.161.97 | 100.121.161.98 | 100.121.161.99 | 2 |
| 10 | 100.121.161.100/30 | 100.121.161.100 | 100.121.161.101 | 100.121.161.102 | 100.121.161.103 | 2 |
| 11 | 100.121.161.104/30 | 100.121.161.104 | 100.121.161.105 | 100.121.161.106 | 100.121.161.107 | 2 |
| 12 | 100.121.161.108/30 | 100.121.161.108 | 100.121.161.109 | 100.121.161.110 | 100.121.161.111 | 2 |
| 13 | 100.121.161.112/30 | 100.121.161.112 | 100.121.161.113 | 100.121.161.114 | 100.121.161.115 | 2 |
| 14 | 100.121.161.116/30 | 100.121.161.116 | 100.121.161.117 | 100.121.161.118 | 100.121.161.119 | 2 |
| 15 | 100.121.161.120/30 | 100.121.161.120 | 100.121.161.121 | 100.121.161.122 | 100.121.161.123 | 2 |
| 16 | 100.121.161.124/30 | 100.121.161.124 | 100.121.161.125 | 100.121.161.126 | 100.121.161.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.