128.178.96.0/19
PublicClass B — /19 prefix — 8,190 usable hosts
Network address — the base address of the block (128.178.96.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 128.178.127.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 8,190 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.224.0 is the dotted-decimal equivalent of /19. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 128.178.96.0/19 |
| Network Address | 128.178.96.0 |
| Broadcast Address | 128.178.127.255 |
| Subnet Mask | 255.255.224.0 |
| Wildcard Mask | 0.0.31.255 |
| Prefix Length | /19 |
| IP Address Class | Class B |
| Total IP Addresses | 8,192 |
| Usable Host Addresses | 8,190 |
| First Usable IP | 128.178.96.1 |
| Last Usable IP | 128.178.127.254 |
| Network (Hex) | 0x80B26000 |
| Broadcast (Hex) | 0x80B27FFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 19 bits (1s in the mask) identify the network. The remaining 13 bits identify hosts within the network.
Split into Equal Subnets
Split 128.178.96.0/19 into 2 equal /20 subnets (4,094 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.178.96.0/20 | 128.178.96.0 | 128.178.96.1 | 128.178.111.254 | 128.178.111.255 | 4,094 |
| 2 | 128.178.112.0/20 | 128.178.112.0 | 128.178.112.1 | 128.178.127.254 | 128.178.127.255 | 4,094 |
Split 128.178.96.0/19 into 4 equal /21 subnets (2,046 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.178.96.0/21 | 128.178.96.0 | 128.178.96.1 | 128.178.103.254 | 128.178.103.255 | 2,046 |
| 2 | 128.178.104.0/21 | 128.178.104.0 | 128.178.104.1 | 128.178.111.254 | 128.178.111.255 | 2,046 |
| 3 | 128.178.112.0/21 | 128.178.112.0 | 128.178.112.1 | 128.178.119.254 | 128.178.119.255 | 2,046 |
| 4 | 128.178.120.0/21 | 128.178.120.0 | 128.178.120.1 | 128.178.127.254 | 128.178.127.255 | 2,046 |
Split 128.178.96.0/19 into 8 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.178.96.0/22 | 128.178.96.0 | 128.178.96.1 | 128.178.99.254 | 128.178.99.255 | 1,022 |
| 2 | 128.178.100.0/22 | 128.178.100.0 | 128.178.100.1 | 128.178.103.254 | 128.178.103.255 | 1,022 |
| 3 | 128.178.104.0/22 | 128.178.104.0 | 128.178.104.1 | 128.178.107.254 | 128.178.107.255 | 1,022 |
| 4 | 128.178.108.0/22 | 128.178.108.0 | 128.178.108.1 | 128.178.111.254 | 128.178.111.255 | 1,022 |
| 5 | 128.178.112.0/22 | 128.178.112.0 | 128.178.112.1 | 128.178.115.254 | 128.178.115.255 | 1,022 |
| 6 | 128.178.116.0/22 | 128.178.116.0 | 128.178.116.1 | 128.178.119.254 | 128.178.119.255 | 1,022 |
| 7 | 128.178.120.0/22 | 128.178.120.0 | 128.178.120.1 | 128.178.123.254 | 128.178.123.255 | 1,022 |
| 8 | 128.178.124.0/22 | 128.178.124.0 | 128.178.124.1 | 128.178.127.254 | 128.178.127.255 | 1,022 |
Split 128.178.96.0/19 into 16 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.178.96.0/23 | 128.178.96.0 | 128.178.96.1 | 128.178.97.254 | 128.178.97.255 | 510 |
| 2 | 128.178.98.0/23 | 128.178.98.0 | 128.178.98.1 | 128.178.99.254 | 128.178.99.255 | 510 |
| 3 | 128.178.100.0/23 | 128.178.100.0 | 128.178.100.1 | 128.178.101.254 | 128.178.101.255 | 510 |
| 4 | 128.178.102.0/23 | 128.178.102.0 | 128.178.102.1 | 128.178.103.254 | 128.178.103.255 | 510 |
| 5 | 128.178.104.0/23 | 128.178.104.0 | 128.178.104.1 | 128.178.105.254 | 128.178.105.255 | 510 |
| 6 | 128.178.106.0/23 | 128.178.106.0 | 128.178.106.1 | 128.178.107.254 | 128.178.107.255 | 510 |
| 7 | 128.178.108.0/23 | 128.178.108.0 | 128.178.108.1 | 128.178.109.254 | 128.178.109.255 | 510 |
| 8 | 128.178.110.0/23 | 128.178.110.0 | 128.178.110.1 | 128.178.111.254 | 128.178.111.255 | 510 |
| 9 | 128.178.112.0/23 | 128.178.112.0 | 128.178.112.1 | 128.178.113.254 | 128.178.113.255 | 510 |
| 10 | 128.178.114.0/23 | 128.178.114.0 | 128.178.114.1 | 128.178.115.254 | 128.178.115.255 | 510 |
| 11 | 128.178.116.0/23 | 128.178.116.0 | 128.178.116.1 | 128.178.117.254 | 128.178.117.255 | 510 |
| 12 | 128.178.118.0/23 | 128.178.118.0 | 128.178.118.1 | 128.178.119.254 | 128.178.119.255 | 510 |
| 13 | 128.178.120.0/23 | 128.178.120.0 | 128.178.120.1 | 128.178.121.254 | 128.178.121.255 | 510 |
| 14 | 128.178.122.0/23 | 128.178.122.0 | 128.178.122.1 | 128.178.123.254 | 128.178.123.255 | 510 |
| 15 | 128.178.124.0/23 | 128.178.124.0 | 128.178.124.1 | 128.178.125.254 | 128.178.125.255 | 510 |
| 16 | 128.178.126.0/23 | 128.178.126.0 | 128.178.126.1 | 128.178.127.254 | 128.178.127.255 | 510 |