251.72.104.0/26
PublicClass E (Reserved) — /26 prefix — 62 usable hosts
Network address — the base address of the block (251.72.104.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 251.72.104.63 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 | 251.72.104.0/26 |
| Network Address | 251.72.104.0 |
| Broadcast Address | 251.72.104.63 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class E (Reserved) |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 251.72.104.1 |
| Last Usable IP | 251.72.104.62 |
| Network (Hex) | 0xFB486800 |
| Broadcast (Hex) | 0xFB48683F |
| 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 251.72.104.0/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.104.0/27 | 251.72.104.0 | 251.72.104.1 | 251.72.104.30 | 251.72.104.31 | 30 |
| 2 | 251.72.104.32/27 | 251.72.104.32 | 251.72.104.33 | 251.72.104.62 | 251.72.104.63 | 30 |
Split 251.72.104.0/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.104.0/28 | 251.72.104.0 | 251.72.104.1 | 251.72.104.14 | 251.72.104.15 | 14 |
| 2 | 251.72.104.16/28 | 251.72.104.16 | 251.72.104.17 | 251.72.104.30 | 251.72.104.31 | 14 |
| 3 | 251.72.104.32/28 | 251.72.104.32 | 251.72.104.33 | 251.72.104.46 | 251.72.104.47 | 14 |
| 4 | 251.72.104.48/28 | 251.72.104.48 | 251.72.104.49 | 251.72.104.62 | 251.72.104.63 | 14 |
Split 251.72.104.0/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.104.0/29 | 251.72.104.0 | 251.72.104.1 | 251.72.104.6 | 251.72.104.7 | 6 |
| 2 | 251.72.104.8/29 | 251.72.104.8 | 251.72.104.9 | 251.72.104.14 | 251.72.104.15 | 6 |
| 3 | 251.72.104.16/29 | 251.72.104.16 | 251.72.104.17 | 251.72.104.22 | 251.72.104.23 | 6 |
| 4 | 251.72.104.24/29 | 251.72.104.24 | 251.72.104.25 | 251.72.104.30 | 251.72.104.31 | 6 |
| 5 | 251.72.104.32/29 | 251.72.104.32 | 251.72.104.33 | 251.72.104.38 | 251.72.104.39 | 6 |
| 6 | 251.72.104.40/29 | 251.72.104.40 | 251.72.104.41 | 251.72.104.46 | 251.72.104.47 | 6 |
| 7 | 251.72.104.48/29 | 251.72.104.48 | 251.72.104.49 | 251.72.104.54 | 251.72.104.55 | 6 |
| 8 | 251.72.104.56/29 | 251.72.104.56 | 251.72.104.57 | 251.72.104.62 | 251.72.104.63 | 6 |
Split 251.72.104.0/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.104.0/30 | 251.72.104.0 | 251.72.104.1 | 251.72.104.2 | 251.72.104.3 | 2 |
| 2 | 251.72.104.4/30 | 251.72.104.4 | 251.72.104.5 | 251.72.104.6 | 251.72.104.7 | 2 |
| 3 | 251.72.104.8/30 | 251.72.104.8 | 251.72.104.9 | 251.72.104.10 | 251.72.104.11 | 2 |
| 4 | 251.72.104.12/30 | 251.72.104.12 | 251.72.104.13 | 251.72.104.14 | 251.72.104.15 | 2 |
| 5 | 251.72.104.16/30 | 251.72.104.16 | 251.72.104.17 | 251.72.104.18 | 251.72.104.19 | 2 |
| 6 | 251.72.104.20/30 | 251.72.104.20 | 251.72.104.21 | 251.72.104.22 | 251.72.104.23 | 2 |
| 7 | 251.72.104.24/30 | 251.72.104.24 | 251.72.104.25 | 251.72.104.26 | 251.72.104.27 | 2 |
| 8 | 251.72.104.28/30 | 251.72.104.28 | 251.72.104.29 | 251.72.104.30 | 251.72.104.31 | 2 |
| 9 | 251.72.104.32/30 | 251.72.104.32 | 251.72.104.33 | 251.72.104.34 | 251.72.104.35 | 2 |
| 10 | 251.72.104.36/30 | 251.72.104.36 | 251.72.104.37 | 251.72.104.38 | 251.72.104.39 | 2 |
| 11 | 251.72.104.40/30 | 251.72.104.40 | 251.72.104.41 | 251.72.104.42 | 251.72.104.43 | 2 |
| 12 | 251.72.104.44/30 | 251.72.104.44 | 251.72.104.45 | 251.72.104.46 | 251.72.104.47 | 2 |
| 13 | 251.72.104.48/30 | 251.72.104.48 | 251.72.104.49 | 251.72.104.50 | 251.72.104.51 | 2 |
| 14 | 251.72.104.52/30 | 251.72.104.52 | 251.72.104.53 | 251.72.104.54 | 251.72.104.55 | 2 |
| 15 | 251.72.104.56/30 | 251.72.104.56 | 251.72.104.57 | 251.72.104.58 | 251.72.104.59 | 2 |
| 16 | 251.72.104.60/30 | 251.72.104.60 | 251.72.104.61 | 251.72.104.62 | 251.72.104.63 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.