198.18.199.0/25
PublicClass C — /25 prefix — 126 usable hosts
Network address — the base address of the block (198.18.199.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 198.18.199.127 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 | 198.18.199.0/25 |
| Network Address | 198.18.199.0 |
| Broadcast Address | 198.18.199.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class C |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 198.18.199.1 |
| Last Usable IP | 198.18.199.126 |
| Network (Hex) | 0xC612C700 |
| Broadcast (Hex) | 0xC612C77F |
| 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 198.18.199.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.199.0/26 | 198.18.199.0 | 198.18.199.1 | 198.18.199.62 | 198.18.199.63 | 62 |
| 2 | 198.18.199.64/26 | 198.18.199.64 | 198.18.199.65 | 198.18.199.126 | 198.18.199.127 | 62 |
Split 198.18.199.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.199.0/27 | 198.18.199.0 | 198.18.199.1 | 198.18.199.30 | 198.18.199.31 | 30 |
| 2 | 198.18.199.32/27 | 198.18.199.32 | 198.18.199.33 | 198.18.199.62 | 198.18.199.63 | 30 |
| 3 | 198.18.199.64/27 | 198.18.199.64 | 198.18.199.65 | 198.18.199.94 | 198.18.199.95 | 30 |
| 4 | 198.18.199.96/27 | 198.18.199.96 | 198.18.199.97 | 198.18.199.126 | 198.18.199.127 | 30 |
Split 198.18.199.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.199.0/28 | 198.18.199.0 | 198.18.199.1 | 198.18.199.14 | 198.18.199.15 | 14 |
| 2 | 198.18.199.16/28 | 198.18.199.16 | 198.18.199.17 | 198.18.199.30 | 198.18.199.31 | 14 |
| 3 | 198.18.199.32/28 | 198.18.199.32 | 198.18.199.33 | 198.18.199.46 | 198.18.199.47 | 14 |
| 4 | 198.18.199.48/28 | 198.18.199.48 | 198.18.199.49 | 198.18.199.62 | 198.18.199.63 | 14 |
| 5 | 198.18.199.64/28 | 198.18.199.64 | 198.18.199.65 | 198.18.199.78 | 198.18.199.79 | 14 |
| 6 | 198.18.199.80/28 | 198.18.199.80 | 198.18.199.81 | 198.18.199.94 | 198.18.199.95 | 14 |
| 7 | 198.18.199.96/28 | 198.18.199.96 | 198.18.199.97 | 198.18.199.110 | 198.18.199.111 | 14 |
| 8 | 198.18.199.112/28 | 198.18.199.112 | 198.18.199.113 | 198.18.199.126 | 198.18.199.127 | 14 |
Split 198.18.199.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.199.0/29 | 198.18.199.0 | 198.18.199.1 | 198.18.199.6 | 198.18.199.7 | 6 |
| 2 | 198.18.199.8/29 | 198.18.199.8 | 198.18.199.9 | 198.18.199.14 | 198.18.199.15 | 6 |
| 3 | 198.18.199.16/29 | 198.18.199.16 | 198.18.199.17 | 198.18.199.22 | 198.18.199.23 | 6 |
| 4 | 198.18.199.24/29 | 198.18.199.24 | 198.18.199.25 | 198.18.199.30 | 198.18.199.31 | 6 |
| 5 | 198.18.199.32/29 | 198.18.199.32 | 198.18.199.33 | 198.18.199.38 | 198.18.199.39 | 6 |
| 6 | 198.18.199.40/29 | 198.18.199.40 | 198.18.199.41 | 198.18.199.46 | 198.18.199.47 | 6 |
| 7 | 198.18.199.48/29 | 198.18.199.48 | 198.18.199.49 | 198.18.199.54 | 198.18.199.55 | 6 |
| 8 | 198.18.199.56/29 | 198.18.199.56 | 198.18.199.57 | 198.18.199.62 | 198.18.199.63 | 6 |
| 9 | 198.18.199.64/29 | 198.18.199.64 | 198.18.199.65 | 198.18.199.70 | 198.18.199.71 | 6 |
| 10 | 198.18.199.72/29 | 198.18.199.72 | 198.18.199.73 | 198.18.199.78 | 198.18.199.79 | 6 |
| 11 | 198.18.199.80/29 | 198.18.199.80 | 198.18.199.81 | 198.18.199.86 | 198.18.199.87 | 6 |
| 12 | 198.18.199.88/29 | 198.18.199.88 | 198.18.199.89 | 198.18.199.94 | 198.18.199.95 | 6 |
| 13 | 198.18.199.96/29 | 198.18.199.96 | 198.18.199.97 | 198.18.199.102 | 198.18.199.103 | 6 |
| 14 | 198.18.199.104/29 | 198.18.199.104 | 198.18.199.105 | 198.18.199.110 | 198.18.199.111 | 6 |
| 15 | 198.18.199.112/29 | 198.18.199.112 | 198.18.199.113 | 198.18.199.118 | 198.18.199.119 | 6 |
| 16 | 198.18.199.120/29 | 198.18.199.120 | 198.18.199.121 | 198.18.199.126 | 198.18.199.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.