159.128.0.0/10
PublicClass B — /10 prefix — 4,194,302 usable hosts
Network address — the base address of the block (159.128.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 159.191.255.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 4,194,302 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.192.0.0 is the dotted-decimal equivalent of /10. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 159.128.0.0/10 |
| Network Address | 159.128.0.0 |
| Broadcast Address | 159.191.255.255 |
| Subnet Mask | 255.192.0.0 |
| Wildcard Mask | 0.63.255.255 |
| Prefix Length | /10 |
| IP Address Class | Class B |
| Total IP Addresses | 4,194,304 |
| Usable Host Addresses | 4,194,302 |
| First Usable IP | 159.128.0.1 |
| Last Usable IP | 159.191.255.254 |
| Network (Hex) | 0x9F800000 |
| Broadcast (Hex) | 0x9FBFFFFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 10 bits (1s in the mask) identify the network. The remaining 22 bits identify hosts within the network.
Split into Equal Subnets
Split 159.128.0.0/10 into 2 equal /11 subnets (2,097,150 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.128.0.0/11 | 159.128.0.0 | 159.128.0.1 | 159.159.255.254 | 159.159.255.255 | 2,097,150 |
| 2 | 159.160.0.0/11 | 159.160.0.0 | 159.160.0.1 | 159.191.255.254 | 159.191.255.255 | 2,097,150 |
Split 159.128.0.0/10 into 4 equal /12 subnets (1,048,574 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.128.0.0/12 | 159.128.0.0 | 159.128.0.1 | 159.143.255.254 | 159.143.255.255 | 1,048,574 |
| 2 | 159.144.0.0/12 | 159.144.0.0 | 159.144.0.1 | 159.159.255.254 | 159.159.255.255 | 1,048,574 |
| 3 | 159.160.0.0/12 | 159.160.0.0 | 159.160.0.1 | 159.175.255.254 | 159.175.255.255 | 1,048,574 |
| 4 | 159.176.0.0/12 | 159.176.0.0 | 159.176.0.1 | 159.191.255.254 | 159.191.255.255 | 1,048,574 |
Split 159.128.0.0/10 into 8 equal /13 subnets (524,286 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.128.0.0/13 | 159.128.0.0 | 159.128.0.1 | 159.135.255.254 | 159.135.255.255 | 524,286 |
| 2 | 159.136.0.0/13 | 159.136.0.0 | 159.136.0.1 | 159.143.255.254 | 159.143.255.255 | 524,286 |
| 3 | 159.144.0.0/13 | 159.144.0.0 | 159.144.0.1 | 159.151.255.254 | 159.151.255.255 | 524,286 |
| 4 | 159.152.0.0/13 | 159.152.0.0 | 159.152.0.1 | 159.159.255.254 | 159.159.255.255 | 524,286 |
| 5 | 159.160.0.0/13 | 159.160.0.0 | 159.160.0.1 | 159.167.255.254 | 159.167.255.255 | 524,286 |
| 6 | 159.168.0.0/13 | 159.168.0.0 | 159.168.0.1 | 159.175.255.254 | 159.175.255.255 | 524,286 |
| 7 | 159.176.0.0/13 | 159.176.0.0 | 159.176.0.1 | 159.183.255.254 | 159.183.255.255 | 524,286 |
| 8 | 159.184.0.0/13 | 159.184.0.0 | 159.184.0.1 | 159.191.255.254 | 159.191.255.255 | 524,286 |
Split 159.128.0.0/10 into 16 equal /14 subnets (262,142 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.128.0.0/14 | 159.128.0.0 | 159.128.0.1 | 159.131.255.254 | 159.131.255.255 | 262,142 |
| 2 | 159.132.0.0/14 | 159.132.0.0 | 159.132.0.1 | 159.135.255.254 | 159.135.255.255 | 262,142 |
| 3 | 159.136.0.0/14 | 159.136.0.0 | 159.136.0.1 | 159.139.255.254 | 159.139.255.255 | 262,142 |
| 4 | 159.140.0.0/14 | 159.140.0.0 | 159.140.0.1 | 159.143.255.254 | 159.143.255.255 | 262,142 |
| 5 | 159.144.0.0/14 | 159.144.0.0 | 159.144.0.1 | 159.147.255.254 | 159.147.255.255 | 262,142 |
| 6 | 159.148.0.0/14 | 159.148.0.0 | 159.148.0.1 | 159.151.255.254 | 159.151.255.255 | 262,142 |
| 7 | 159.152.0.0/14 | 159.152.0.0 | 159.152.0.1 | 159.155.255.254 | 159.155.255.255 | 262,142 |
| 8 | 159.156.0.0/14 | 159.156.0.0 | 159.156.0.1 | 159.159.255.254 | 159.159.255.255 | 262,142 |
| 9 | 159.160.0.0/14 | 159.160.0.0 | 159.160.0.1 | 159.163.255.254 | 159.163.255.255 | 262,142 |
| 10 | 159.164.0.0/14 | 159.164.0.0 | 159.164.0.1 | 159.167.255.254 | 159.167.255.255 | 262,142 |
| 11 | 159.168.0.0/14 | 159.168.0.0 | 159.168.0.1 | 159.171.255.254 | 159.171.255.255 | 262,142 |
| 12 | 159.172.0.0/14 | 159.172.0.0 | 159.172.0.1 | 159.175.255.254 | 159.175.255.255 | 262,142 |
| 13 | 159.176.0.0/14 | 159.176.0.0 | 159.176.0.1 | 159.179.255.254 | 159.179.255.255 | 262,142 |
| 14 | 159.180.0.0/14 | 159.180.0.0 | 159.180.0.1 | 159.183.255.254 | 159.183.255.255 | 262,142 |
| 15 | 159.184.0.0/14 | 159.184.0.0 | 159.184.0.1 | 159.187.255.254 | 159.187.255.255 | 262,142 |
| 16 | 159.188.0.0/14 | 159.188.0.0 | 159.188.0.1 | 159.191.255.254 | 159.191.255.255 | 262,142 |