198.18.192.0/20
PublicClass C — /20 prefix — 4,094 usable hosts
Network address — the base address of the block (198.18.192.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 198.18.207.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 4,094 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.240.0 is the dotted-decimal equivalent of /20. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 198.18.192.0/20 |
| Network Address | 198.18.192.0 |
| Broadcast Address | 198.18.207.255 |
| Subnet Mask | 255.255.240.0 |
| Wildcard Mask | 0.0.15.255 |
| Prefix Length | /20 |
| IP Address Class | Class C |
| Total IP Addresses | 4,096 |
| Usable Host Addresses | 4,094 |
| First Usable IP | 198.18.192.1 |
| Last Usable IP | 198.18.207.254 |
| Network (Hex) | 0xC612C000 |
| Broadcast (Hex) | 0xC612CFFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 20 bits (1s in the mask) identify the network. The remaining 12 bits identify hosts within the network.
Split into Equal Subnets
Split 198.18.192.0/20 into 2 equal /21 subnets (2,046 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.192.0/21 | 198.18.192.0 | 198.18.192.1 | 198.18.199.254 | 198.18.199.255 | 2,046 |
| 2 | 198.18.200.0/21 | 198.18.200.0 | 198.18.200.1 | 198.18.207.254 | 198.18.207.255 | 2,046 |
Split 198.18.192.0/20 into 4 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.192.0/22 | 198.18.192.0 | 198.18.192.1 | 198.18.195.254 | 198.18.195.255 | 1,022 |
| 2 | 198.18.196.0/22 | 198.18.196.0 | 198.18.196.1 | 198.18.199.254 | 198.18.199.255 | 1,022 |
| 3 | 198.18.200.0/22 | 198.18.200.0 | 198.18.200.1 | 198.18.203.254 | 198.18.203.255 | 1,022 |
| 4 | 198.18.204.0/22 | 198.18.204.0 | 198.18.204.1 | 198.18.207.254 | 198.18.207.255 | 1,022 |
Split 198.18.192.0/20 into 8 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.192.0/23 | 198.18.192.0 | 198.18.192.1 | 198.18.193.254 | 198.18.193.255 | 510 |
| 2 | 198.18.194.0/23 | 198.18.194.0 | 198.18.194.1 | 198.18.195.254 | 198.18.195.255 | 510 |
| 3 | 198.18.196.0/23 | 198.18.196.0 | 198.18.196.1 | 198.18.197.254 | 198.18.197.255 | 510 |
| 4 | 198.18.198.0/23 | 198.18.198.0 | 198.18.198.1 | 198.18.199.254 | 198.18.199.255 | 510 |
| 5 | 198.18.200.0/23 | 198.18.200.0 | 198.18.200.1 | 198.18.201.254 | 198.18.201.255 | 510 |
| 6 | 198.18.202.0/23 | 198.18.202.0 | 198.18.202.1 | 198.18.203.254 | 198.18.203.255 | 510 |
| 7 | 198.18.204.0/23 | 198.18.204.0 | 198.18.204.1 | 198.18.205.254 | 198.18.205.255 | 510 |
| 8 | 198.18.206.0/23 | 198.18.206.0 | 198.18.206.1 | 198.18.207.254 | 198.18.207.255 | 510 |
Split 198.18.192.0/20 into 16 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 198.18.192.0/24 | 198.18.192.0 | 198.18.192.1 | 198.18.192.254 | 198.18.192.255 | 254 |
| 2 | 198.18.193.0/24 | 198.18.193.0 | 198.18.193.1 | 198.18.193.254 | 198.18.193.255 | 254 |
| 3 | 198.18.194.0/24 | 198.18.194.0 | 198.18.194.1 | 198.18.194.254 | 198.18.194.255 | 254 |
| 4 | 198.18.195.0/24 | 198.18.195.0 | 198.18.195.1 | 198.18.195.254 | 198.18.195.255 | 254 |
| 5 | 198.18.196.0/24 | 198.18.196.0 | 198.18.196.1 | 198.18.196.254 | 198.18.196.255 | 254 |
| 6 | 198.18.197.0/24 | 198.18.197.0 | 198.18.197.1 | 198.18.197.254 | 198.18.197.255 | 254 |
| 7 | 198.18.198.0/24 | 198.18.198.0 | 198.18.198.1 | 198.18.198.254 | 198.18.198.255 | 254 |
| 8 | 198.18.199.0/24 | 198.18.199.0 | 198.18.199.1 | 198.18.199.254 | 198.18.199.255 | 254 |
| 9 | 198.18.200.0/24 | 198.18.200.0 | 198.18.200.1 | 198.18.200.254 | 198.18.200.255 | 254 |
| 10 | 198.18.201.0/24 | 198.18.201.0 | 198.18.201.1 | 198.18.201.254 | 198.18.201.255 | 254 |
| 11 | 198.18.202.0/24 | 198.18.202.0 | 198.18.202.1 | 198.18.202.254 | 198.18.202.255 | 254 |
| 12 | 198.18.203.0/24 | 198.18.203.0 | 198.18.203.1 | 198.18.203.254 | 198.18.203.255 | 254 |
| 13 | 198.18.204.0/24 | 198.18.204.0 | 198.18.204.1 | 198.18.204.254 | 198.18.204.255 | 254 |
| 14 | 198.18.205.0/24 | 198.18.205.0 | 198.18.205.1 | 198.18.205.254 | 198.18.205.255 | 254 |
| 15 | 198.18.206.0/24 | 198.18.206.0 | 198.18.206.1 | 198.18.206.254 | 198.18.206.255 | 254 |
| 16 | 198.18.207.0/24 | 198.18.207.0 | 198.18.207.1 | 198.18.207.254 | 198.18.207.255 | 254 |