251.72.109.64/26
PublicClass E (Reserved) — /26 prefix — 62 usable hosts
Network address — the base address of the block (251.72.109.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 251.72.109.127 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 | 251.72.109.64/26 |
| Network Address | 251.72.109.64 |
| Broadcast Address | 251.72.109.127 |
| 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 | 251.72.109.65 |
| Last Usable IP | 251.72.109.126 |
| Network (Hex) | 0xFB486D40 |
| Broadcast (Hex) | 0xFB486D7F |
| 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 251.72.109.64/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.109.64/27 | 251.72.109.64 | 251.72.109.65 | 251.72.109.94 | 251.72.109.95 | 30 |
| 2 | 251.72.109.96/27 | 251.72.109.96 | 251.72.109.97 | 251.72.109.126 | 251.72.109.127 | 30 |
Split 251.72.109.64/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.109.64/28 | 251.72.109.64 | 251.72.109.65 | 251.72.109.78 | 251.72.109.79 | 14 |
| 2 | 251.72.109.80/28 | 251.72.109.80 | 251.72.109.81 | 251.72.109.94 | 251.72.109.95 | 14 |
| 3 | 251.72.109.96/28 | 251.72.109.96 | 251.72.109.97 | 251.72.109.110 | 251.72.109.111 | 14 |
| 4 | 251.72.109.112/28 | 251.72.109.112 | 251.72.109.113 | 251.72.109.126 | 251.72.109.127 | 14 |
Split 251.72.109.64/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.109.64/29 | 251.72.109.64 | 251.72.109.65 | 251.72.109.70 | 251.72.109.71 | 6 |
| 2 | 251.72.109.72/29 | 251.72.109.72 | 251.72.109.73 | 251.72.109.78 | 251.72.109.79 | 6 |
| 3 | 251.72.109.80/29 | 251.72.109.80 | 251.72.109.81 | 251.72.109.86 | 251.72.109.87 | 6 |
| 4 | 251.72.109.88/29 | 251.72.109.88 | 251.72.109.89 | 251.72.109.94 | 251.72.109.95 | 6 |
| 5 | 251.72.109.96/29 | 251.72.109.96 | 251.72.109.97 | 251.72.109.102 | 251.72.109.103 | 6 |
| 6 | 251.72.109.104/29 | 251.72.109.104 | 251.72.109.105 | 251.72.109.110 | 251.72.109.111 | 6 |
| 7 | 251.72.109.112/29 | 251.72.109.112 | 251.72.109.113 | 251.72.109.118 | 251.72.109.119 | 6 |
| 8 | 251.72.109.120/29 | 251.72.109.120 | 251.72.109.121 | 251.72.109.126 | 251.72.109.127 | 6 |
Split 251.72.109.64/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 251.72.109.64/30 | 251.72.109.64 | 251.72.109.65 | 251.72.109.66 | 251.72.109.67 | 2 |
| 2 | 251.72.109.68/30 | 251.72.109.68 | 251.72.109.69 | 251.72.109.70 | 251.72.109.71 | 2 |
| 3 | 251.72.109.72/30 | 251.72.109.72 | 251.72.109.73 | 251.72.109.74 | 251.72.109.75 | 2 |
| 4 | 251.72.109.76/30 | 251.72.109.76 | 251.72.109.77 | 251.72.109.78 | 251.72.109.79 | 2 |
| 5 | 251.72.109.80/30 | 251.72.109.80 | 251.72.109.81 | 251.72.109.82 | 251.72.109.83 | 2 |
| 6 | 251.72.109.84/30 | 251.72.109.84 | 251.72.109.85 | 251.72.109.86 | 251.72.109.87 | 2 |
| 7 | 251.72.109.88/30 | 251.72.109.88 | 251.72.109.89 | 251.72.109.90 | 251.72.109.91 | 2 |
| 8 | 251.72.109.92/30 | 251.72.109.92 | 251.72.109.93 | 251.72.109.94 | 251.72.109.95 | 2 |
| 9 | 251.72.109.96/30 | 251.72.109.96 | 251.72.109.97 | 251.72.109.98 | 251.72.109.99 | 2 |
| 10 | 251.72.109.100/30 | 251.72.109.100 | 251.72.109.101 | 251.72.109.102 | 251.72.109.103 | 2 |
| 11 | 251.72.109.104/30 | 251.72.109.104 | 251.72.109.105 | 251.72.109.106 | 251.72.109.107 | 2 |
| 12 | 251.72.109.108/30 | 251.72.109.108 | 251.72.109.109 | 251.72.109.110 | 251.72.109.111 | 2 |
| 13 | 251.72.109.112/30 | 251.72.109.112 | 251.72.109.113 | 251.72.109.114 | 251.72.109.115 | 2 |
| 14 | 251.72.109.116/30 | 251.72.109.116 | 251.72.109.117 | 251.72.109.118 | 251.72.109.119 | 2 |
| 15 | 251.72.109.120/30 | 251.72.109.120 | 251.72.109.121 | 251.72.109.122 | 251.72.109.123 | 2 |
| 16 | 251.72.109.124/30 | 251.72.109.124 | 251.72.109.125 | 251.72.109.126 | 251.72.109.127 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.