172.55.221.0/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (172.55.221.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 172.55.221.63 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 | 172.55.221.0/26 |
| Network Address | 172.55.221.0 |
| Broadcast Address | 172.55.221.63 |
| 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 | 172.55.221.1 |
| Last Usable IP | 172.55.221.62 |
| Network (Hex) | 0xAC37DD00 |
| Broadcast (Hex) | 0xAC37DD3F |
| 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 172.55.221.0/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.55.221.0/27 | 172.55.221.0 | 172.55.221.1 | 172.55.221.30 | 172.55.221.31 | 30 |
| 2 | 172.55.221.32/27 | 172.55.221.32 | 172.55.221.33 | 172.55.221.62 | 172.55.221.63 | 30 |
Split 172.55.221.0/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.55.221.0/28 | 172.55.221.0 | 172.55.221.1 | 172.55.221.14 | 172.55.221.15 | 14 |
| 2 | 172.55.221.16/28 | 172.55.221.16 | 172.55.221.17 | 172.55.221.30 | 172.55.221.31 | 14 |
| 3 | 172.55.221.32/28 | 172.55.221.32 | 172.55.221.33 | 172.55.221.46 | 172.55.221.47 | 14 |
| 4 | 172.55.221.48/28 | 172.55.221.48 | 172.55.221.49 | 172.55.221.62 | 172.55.221.63 | 14 |
Split 172.55.221.0/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.55.221.0/29 | 172.55.221.0 | 172.55.221.1 | 172.55.221.6 | 172.55.221.7 | 6 |
| 2 | 172.55.221.8/29 | 172.55.221.8 | 172.55.221.9 | 172.55.221.14 | 172.55.221.15 | 6 |
| 3 | 172.55.221.16/29 | 172.55.221.16 | 172.55.221.17 | 172.55.221.22 | 172.55.221.23 | 6 |
| 4 | 172.55.221.24/29 | 172.55.221.24 | 172.55.221.25 | 172.55.221.30 | 172.55.221.31 | 6 |
| 5 | 172.55.221.32/29 | 172.55.221.32 | 172.55.221.33 | 172.55.221.38 | 172.55.221.39 | 6 |
| 6 | 172.55.221.40/29 | 172.55.221.40 | 172.55.221.41 | 172.55.221.46 | 172.55.221.47 | 6 |
| 7 | 172.55.221.48/29 | 172.55.221.48 | 172.55.221.49 | 172.55.221.54 | 172.55.221.55 | 6 |
| 8 | 172.55.221.56/29 | 172.55.221.56 | 172.55.221.57 | 172.55.221.62 | 172.55.221.63 | 6 |
Split 172.55.221.0/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.55.221.0/30 | 172.55.221.0 | 172.55.221.1 | 172.55.221.2 | 172.55.221.3 | 2 |
| 2 | 172.55.221.4/30 | 172.55.221.4 | 172.55.221.5 | 172.55.221.6 | 172.55.221.7 | 2 |
| 3 | 172.55.221.8/30 | 172.55.221.8 | 172.55.221.9 | 172.55.221.10 | 172.55.221.11 | 2 |
| 4 | 172.55.221.12/30 | 172.55.221.12 | 172.55.221.13 | 172.55.221.14 | 172.55.221.15 | 2 |
| 5 | 172.55.221.16/30 | 172.55.221.16 | 172.55.221.17 | 172.55.221.18 | 172.55.221.19 | 2 |
| 6 | 172.55.221.20/30 | 172.55.221.20 | 172.55.221.21 | 172.55.221.22 | 172.55.221.23 | 2 |
| 7 | 172.55.221.24/30 | 172.55.221.24 | 172.55.221.25 | 172.55.221.26 | 172.55.221.27 | 2 |
| 8 | 172.55.221.28/30 | 172.55.221.28 | 172.55.221.29 | 172.55.221.30 | 172.55.221.31 | 2 |
| 9 | 172.55.221.32/30 | 172.55.221.32 | 172.55.221.33 | 172.55.221.34 | 172.55.221.35 | 2 |
| 10 | 172.55.221.36/30 | 172.55.221.36 | 172.55.221.37 | 172.55.221.38 | 172.55.221.39 | 2 |
| 11 | 172.55.221.40/30 | 172.55.221.40 | 172.55.221.41 | 172.55.221.42 | 172.55.221.43 | 2 |
| 12 | 172.55.221.44/30 | 172.55.221.44 | 172.55.221.45 | 172.55.221.46 | 172.55.221.47 | 2 |
| 13 | 172.55.221.48/30 | 172.55.221.48 | 172.55.221.49 | 172.55.221.50 | 172.55.221.51 | 2 |
| 14 | 172.55.221.52/30 | 172.55.221.52 | 172.55.221.53 | 172.55.221.54 | 172.55.221.55 | 2 |
| 15 | 172.55.221.56/30 | 172.55.221.56 | 172.55.221.57 | 172.55.221.58 | 172.55.221.59 | 2 |
| 16 | 172.55.221.60/30 | 172.55.221.60 | 172.55.221.61 | 172.55.221.62 | 172.55.221.63 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.