148.0.0.0/6
PublicClass B — /6 prefix — 67,108,862 usable hosts
Network address — the base address of the block (148.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.255.255.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 67,108,862 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 252.0.0.0 is the dotted-decimal equivalent of /6. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 148.0.0.0/6 |
| Network Address | 148.0.0.0 |
| Broadcast Address | 151.255.255.255 |
| Subnet Mask | 252.0.0.0 |
| Wildcard Mask | 3.255.255.255 |
| Prefix Length | /6 |
| IP Address Class | Class B |
| Total IP Addresses | 67,108,864 |
| Usable Host Addresses | 67,108,862 |
| First Usable IP | 148.0.0.1 |
| Last Usable IP | 151.255.255.254 |
| Network (Hex) | 0x94000000 |
| Broadcast (Hex) | 0x97FFFFFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 6 bits (1s in the mask) identify the network. The remaining 26 bits identify hosts within the network.
Split into Equal Subnets
Split 148.0.0.0/6 into 2 equal /7 subnets (33,554,430 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 148.0.0.0/7 | 148.0.0.0 | 148.0.0.1 | 149.255.255.254 | 149.255.255.255 | 33,554,430 |
| 2 | 150.0.0.0/7 | 150.0.0.0 | 150.0.0.1 | 151.255.255.254 | 151.255.255.255 | 33,554,430 |
Split 148.0.0.0/6 into 4 equal /8 subnets (16,777,214 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 148.0.0.0/8 | 148.0.0.0 | 148.0.0.1 | 148.255.255.254 | 148.255.255.255 | 16,777,214 |
| 2 | 149.0.0.0/8 | 149.0.0.0 | 149.0.0.1 | 149.255.255.254 | 149.255.255.255 | 16,777,214 |
| 3 | 150.0.0.0/8 | 150.0.0.0 | 150.0.0.1 | 150.255.255.254 | 150.255.255.255 | 16,777,214 |
| 4 | 151.0.0.0/8 | 151.0.0.0 | 151.0.0.1 | 151.255.255.254 | 151.255.255.255 | 16,777,214 |
Split 148.0.0.0/6 into 8 equal /9 subnets (8,388,606 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 148.0.0.0/9 | 148.0.0.0 | 148.0.0.1 | 148.127.255.254 | 148.127.255.255 | 8,388,606 |
| 2 | 148.128.0.0/9 | 148.128.0.0 | 148.128.0.1 | 148.255.255.254 | 148.255.255.255 | 8,388,606 |
| 3 | 149.0.0.0/9 | 149.0.0.0 | 149.0.0.1 | 149.127.255.254 | 149.127.255.255 | 8,388,606 |
| 4 | 149.128.0.0/9 | 149.128.0.0 | 149.128.0.1 | 149.255.255.254 | 149.255.255.255 | 8,388,606 |
| 5 | 150.0.0.0/9 | 150.0.0.0 | 150.0.0.1 | 150.127.255.254 | 150.127.255.255 | 8,388,606 |
| 6 | 150.128.0.0/9 | 150.128.0.0 | 150.128.0.1 | 150.255.255.254 | 150.255.255.255 | 8,388,606 |
| 7 | 151.0.0.0/9 | 151.0.0.0 | 151.0.0.1 | 151.127.255.254 | 151.127.255.255 | 8,388,606 |
| 8 | 151.128.0.0/9 | 151.128.0.0 | 151.128.0.1 | 151.255.255.254 | 151.255.255.255 | 8,388,606 |
Split 148.0.0.0/6 into 16 equal /10 subnets (4,194,302 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 148.0.0.0/10 | 148.0.0.0 | 148.0.0.1 | 148.63.255.254 | 148.63.255.255 | 4,194,302 |
| 2 | 148.64.0.0/10 | 148.64.0.0 | 148.64.0.1 | 148.127.255.254 | 148.127.255.255 | 4,194,302 |
| 3 | 148.128.0.0/10 | 148.128.0.0 | 148.128.0.1 | 148.191.255.254 | 148.191.255.255 | 4,194,302 |
| 4 | 148.192.0.0/10 | 148.192.0.0 | 148.192.0.1 | 148.255.255.254 | 148.255.255.255 | 4,194,302 |
| 5 | 149.0.0.0/10 | 149.0.0.0 | 149.0.0.1 | 149.63.255.254 | 149.63.255.255 | 4,194,302 |
| 6 | 149.64.0.0/10 | 149.64.0.0 | 149.64.0.1 | 149.127.255.254 | 149.127.255.255 | 4,194,302 |
| 7 | 149.128.0.0/10 | 149.128.0.0 | 149.128.0.1 | 149.191.255.254 | 149.191.255.255 | 4,194,302 |
| 8 | 149.192.0.0/10 | 149.192.0.0 | 149.192.0.1 | 149.255.255.254 | 149.255.255.255 | 4,194,302 |
| 9 | 150.0.0.0/10 | 150.0.0.0 | 150.0.0.1 | 150.63.255.254 | 150.63.255.255 | 4,194,302 |
| 10 | 150.64.0.0/10 | 150.64.0.0 | 150.64.0.1 | 150.127.255.254 | 150.127.255.255 | 4,194,302 |
| 11 | 150.128.0.0/10 | 150.128.0.0 | 150.128.0.1 | 150.191.255.254 | 150.191.255.255 | 4,194,302 |
| 12 | 150.192.0.0/10 | 150.192.0.0 | 150.192.0.1 | 150.255.255.254 | 150.255.255.255 | 4,194,302 |
| 13 | 151.0.0.0/10 | 151.0.0.0 | 151.0.0.1 | 151.63.255.254 | 151.63.255.255 | 4,194,302 |
| 14 | 151.64.0.0/10 | 151.64.0.0 | 151.64.0.1 | 151.127.255.254 | 151.127.255.255 | 4,194,302 |
| 15 | 151.128.0.0/10 | 151.128.0.0 | 151.128.0.1 | 151.191.255.254 | 151.191.255.255 | 4,194,302 |
| 16 | 151.192.0.0/10 | 151.192.0.0 | 151.192.0.1 | 151.255.255.254 | 151.255.255.255 | 4,194,302 |