255.0.122.0/25
PublicClass E (Reserved) — /25 prefix — 126 usable hosts
Network address — the base address of the block (255.0.122.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 255.0.122.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 255.0.122.0/25 |
| Network Address | 255.0.122.0 |
| Broadcast Address | 255.0.122.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class E (Reserved) |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 255.0.122.1 |
| Last Usable IP | 255.0.122.126 |
| Network (Hex) | 0xFF007A00 |
| Broadcast (Hex) | 0xFF007A7F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 255.0.122.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 255.0.122.0/26 | 255.0.122.0 | 255.0.122.1 | 255.0.122.62 | 255.0.122.63 | 62 |
| 2 | 255.0.122.64/26 | 255.0.122.64 | 255.0.122.65 | 255.0.122.126 | 255.0.122.127 | 62 |
Split 255.0.122.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 255.0.122.0/27 | 255.0.122.0 | 255.0.122.1 | 255.0.122.30 | 255.0.122.31 | 30 |
| 2 | 255.0.122.32/27 | 255.0.122.32 | 255.0.122.33 | 255.0.122.62 | 255.0.122.63 | 30 |
| 3 | 255.0.122.64/27 | 255.0.122.64 | 255.0.122.65 | 255.0.122.94 | 255.0.122.95 | 30 |
| 4 | 255.0.122.96/27 | 255.0.122.96 | 255.0.122.97 | 255.0.122.126 | 255.0.122.127 | 30 |
Split 255.0.122.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 255.0.122.0/28 | 255.0.122.0 | 255.0.122.1 | 255.0.122.14 | 255.0.122.15 | 14 |
| 2 | 255.0.122.16/28 | 255.0.122.16 | 255.0.122.17 | 255.0.122.30 | 255.0.122.31 | 14 |
| 3 | 255.0.122.32/28 | 255.0.122.32 | 255.0.122.33 | 255.0.122.46 | 255.0.122.47 | 14 |
| 4 | 255.0.122.48/28 | 255.0.122.48 | 255.0.122.49 | 255.0.122.62 | 255.0.122.63 | 14 |
| 5 | 255.0.122.64/28 | 255.0.122.64 | 255.0.122.65 | 255.0.122.78 | 255.0.122.79 | 14 |
| 6 | 255.0.122.80/28 | 255.0.122.80 | 255.0.122.81 | 255.0.122.94 | 255.0.122.95 | 14 |
| 7 | 255.0.122.96/28 | 255.0.122.96 | 255.0.122.97 | 255.0.122.110 | 255.0.122.111 | 14 |
| 8 | 255.0.122.112/28 | 255.0.122.112 | 255.0.122.113 | 255.0.122.126 | 255.0.122.127 | 14 |
Split 255.0.122.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 255.0.122.0/29 | 255.0.122.0 | 255.0.122.1 | 255.0.122.6 | 255.0.122.7 | 6 |
| 2 | 255.0.122.8/29 | 255.0.122.8 | 255.0.122.9 | 255.0.122.14 | 255.0.122.15 | 6 |
| 3 | 255.0.122.16/29 | 255.0.122.16 | 255.0.122.17 | 255.0.122.22 | 255.0.122.23 | 6 |
| 4 | 255.0.122.24/29 | 255.0.122.24 | 255.0.122.25 | 255.0.122.30 | 255.0.122.31 | 6 |
| 5 | 255.0.122.32/29 | 255.0.122.32 | 255.0.122.33 | 255.0.122.38 | 255.0.122.39 | 6 |
| 6 | 255.0.122.40/29 | 255.0.122.40 | 255.0.122.41 | 255.0.122.46 | 255.0.122.47 | 6 |
| 7 | 255.0.122.48/29 | 255.0.122.48 | 255.0.122.49 | 255.0.122.54 | 255.0.122.55 | 6 |
| 8 | 255.0.122.56/29 | 255.0.122.56 | 255.0.122.57 | 255.0.122.62 | 255.0.122.63 | 6 |
| 9 | 255.0.122.64/29 | 255.0.122.64 | 255.0.122.65 | 255.0.122.70 | 255.0.122.71 | 6 |
| 10 | 255.0.122.72/29 | 255.0.122.72 | 255.0.122.73 | 255.0.122.78 | 255.0.122.79 | 6 |
| 11 | 255.0.122.80/29 | 255.0.122.80 | 255.0.122.81 | 255.0.122.86 | 255.0.122.87 | 6 |
| 12 | 255.0.122.88/29 | 255.0.122.88 | 255.0.122.89 | 255.0.122.94 | 255.0.122.95 | 6 |
| 13 | 255.0.122.96/29 | 255.0.122.96 | 255.0.122.97 | 255.0.122.102 | 255.0.122.103 | 6 |
| 14 | 255.0.122.104/29 | 255.0.122.104 | 255.0.122.105 | 255.0.122.110 | 255.0.122.111 | 6 |
| 15 | 255.0.122.112/29 | 255.0.122.112 | 255.0.122.113 | 255.0.122.118 | 255.0.122.119 | 6 |
| 16 | 255.0.122.120/29 | 255.0.122.120 | 255.0.122.121 | 255.0.122.126 | 255.0.122.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.