203.66.28.0/26
PublicClass C — /26 prefix — 62 usable hosts
Network address — the base address of the block (203.66.28.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 203.66.28.63 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 | 203.66.28.0/26 |
| Network Address | 203.66.28.0 |
| Broadcast Address | 203.66.28.63 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class C |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 203.66.28.1 |
| Last Usable IP | 203.66.28.62 |
| Network (Hex) | 0xCB421C00 |
| Broadcast (Hex) | 0xCB421C3F |
| 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 203.66.28.0/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 203.66.28.0/27 | 203.66.28.0 | 203.66.28.1 | 203.66.28.30 | 203.66.28.31 | 30 |
| 2 | 203.66.28.32/27 | 203.66.28.32 | 203.66.28.33 | 203.66.28.62 | 203.66.28.63 | 30 |
Split 203.66.28.0/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 203.66.28.0/28 | 203.66.28.0 | 203.66.28.1 | 203.66.28.14 | 203.66.28.15 | 14 |
| 2 | 203.66.28.16/28 | 203.66.28.16 | 203.66.28.17 | 203.66.28.30 | 203.66.28.31 | 14 |
| 3 | 203.66.28.32/28 | 203.66.28.32 | 203.66.28.33 | 203.66.28.46 | 203.66.28.47 | 14 |
| 4 | 203.66.28.48/28 | 203.66.28.48 | 203.66.28.49 | 203.66.28.62 | 203.66.28.63 | 14 |
Split 203.66.28.0/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 203.66.28.0/29 | 203.66.28.0 | 203.66.28.1 | 203.66.28.6 | 203.66.28.7 | 6 |
| 2 | 203.66.28.8/29 | 203.66.28.8 | 203.66.28.9 | 203.66.28.14 | 203.66.28.15 | 6 |
| 3 | 203.66.28.16/29 | 203.66.28.16 | 203.66.28.17 | 203.66.28.22 | 203.66.28.23 | 6 |
| 4 | 203.66.28.24/29 | 203.66.28.24 | 203.66.28.25 | 203.66.28.30 | 203.66.28.31 | 6 |
| 5 | 203.66.28.32/29 | 203.66.28.32 | 203.66.28.33 | 203.66.28.38 | 203.66.28.39 | 6 |
| 6 | 203.66.28.40/29 | 203.66.28.40 | 203.66.28.41 | 203.66.28.46 | 203.66.28.47 | 6 |
| 7 | 203.66.28.48/29 | 203.66.28.48 | 203.66.28.49 | 203.66.28.54 | 203.66.28.55 | 6 |
| 8 | 203.66.28.56/29 | 203.66.28.56 | 203.66.28.57 | 203.66.28.62 | 203.66.28.63 | 6 |
Split 203.66.28.0/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 203.66.28.0/30 | 203.66.28.0 | 203.66.28.1 | 203.66.28.2 | 203.66.28.3 | 2 |
| 2 | 203.66.28.4/30 | 203.66.28.4 | 203.66.28.5 | 203.66.28.6 | 203.66.28.7 | 2 |
| 3 | 203.66.28.8/30 | 203.66.28.8 | 203.66.28.9 | 203.66.28.10 | 203.66.28.11 | 2 |
| 4 | 203.66.28.12/30 | 203.66.28.12 | 203.66.28.13 | 203.66.28.14 | 203.66.28.15 | 2 |
| 5 | 203.66.28.16/30 | 203.66.28.16 | 203.66.28.17 | 203.66.28.18 | 203.66.28.19 | 2 |
| 6 | 203.66.28.20/30 | 203.66.28.20 | 203.66.28.21 | 203.66.28.22 | 203.66.28.23 | 2 |
| 7 | 203.66.28.24/30 | 203.66.28.24 | 203.66.28.25 | 203.66.28.26 | 203.66.28.27 | 2 |
| 8 | 203.66.28.28/30 | 203.66.28.28 | 203.66.28.29 | 203.66.28.30 | 203.66.28.31 | 2 |
| 9 | 203.66.28.32/30 | 203.66.28.32 | 203.66.28.33 | 203.66.28.34 | 203.66.28.35 | 2 |
| 10 | 203.66.28.36/30 | 203.66.28.36 | 203.66.28.37 | 203.66.28.38 | 203.66.28.39 | 2 |
| 11 | 203.66.28.40/30 | 203.66.28.40 | 203.66.28.41 | 203.66.28.42 | 203.66.28.43 | 2 |
| 12 | 203.66.28.44/30 | 203.66.28.44 | 203.66.28.45 | 203.66.28.46 | 203.66.28.47 | 2 |
| 13 | 203.66.28.48/30 | 203.66.28.48 | 203.66.28.49 | 203.66.28.50 | 203.66.28.51 | 2 |
| 14 | 203.66.28.52/30 | 203.66.28.52 | 203.66.28.53 | 203.66.28.54 | 203.66.28.55 | 2 |
| 15 | 203.66.28.56/30 | 203.66.28.56 | 203.66.28.57 | 203.66.28.58 | 203.66.28.59 | 2 |
| 16 | 203.66.28.60/30 | 203.66.28.60 | 203.66.28.61 | 203.66.28.62 | 203.66.28.63 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.