151.78.100.0/24
PublicClass B — /24 prefix — 254 usable hosts
Network address — the base address of the block (151.78.100.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.78.100.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 254 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.0 is the dotted-decimal equivalent of /24. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 151.78.100.0/24 |
| Network Address | 151.78.100.0 |
| Broadcast Address | 151.78.100.255 |
| Subnet Mask | 255.255.255.0 |
| Wildcard Mask | 0.0.0.255 |
| Prefix Length | /24 |
| IP Address Class | Class B |
| Total IP Addresses | 256 |
| Usable Host Addresses | 254 |
| First Usable IP | 151.78.100.1 |
| Last Usable IP | 151.78.100.254 |
| Network (Hex) | 0x974E6400 |
| Broadcast (Hex) | 0x974E64FF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 24 bits (1s in the mask) identify the network. The remaining 8 bits identify hosts within the network.
Split into Equal Subnets
Split 151.78.100.0/24 into 2 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.100.0/25 | 151.78.100.0 | 151.78.100.1 | 151.78.100.126 | 151.78.100.127 | 126 |
| 2 | 151.78.100.128/25 | 151.78.100.128 | 151.78.100.129 | 151.78.100.254 | 151.78.100.255 | 126 |
Split 151.78.100.0/24 into 4 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.100.0/26 | 151.78.100.0 | 151.78.100.1 | 151.78.100.62 | 151.78.100.63 | 62 |
| 2 | 151.78.100.64/26 | 151.78.100.64 | 151.78.100.65 | 151.78.100.126 | 151.78.100.127 | 62 |
| 3 | 151.78.100.128/26 | 151.78.100.128 | 151.78.100.129 | 151.78.100.190 | 151.78.100.191 | 62 |
| 4 | 151.78.100.192/26 | 151.78.100.192 | 151.78.100.193 | 151.78.100.254 | 151.78.100.255 | 62 |
Split 151.78.100.0/24 into 8 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.100.0/27 | 151.78.100.0 | 151.78.100.1 | 151.78.100.30 | 151.78.100.31 | 30 |
| 2 | 151.78.100.32/27 | 151.78.100.32 | 151.78.100.33 | 151.78.100.62 | 151.78.100.63 | 30 |
| 3 | 151.78.100.64/27 | 151.78.100.64 | 151.78.100.65 | 151.78.100.94 | 151.78.100.95 | 30 |
| 4 | 151.78.100.96/27 | 151.78.100.96 | 151.78.100.97 | 151.78.100.126 | 151.78.100.127 | 30 |
| 5 | 151.78.100.128/27 | 151.78.100.128 | 151.78.100.129 | 151.78.100.158 | 151.78.100.159 | 30 |
| 6 | 151.78.100.160/27 | 151.78.100.160 | 151.78.100.161 | 151.78.100.190 | 151.78.100.191 | 30 |
| 7 | 151.78.100.192/27 | 151.78.100.192 | 151.78.100.193 | 151.78.100.222 | 151.78.100.223 | 30 |
| 8 | 151.78.100.224/27 | 151.78.100.224 | 151.78.100.225 | 151.78.100.254 | 151.78.100.255 | 30 |
Split 151.78.100.0/24 into 16 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.100.0/28 | 151.78.100.0 | 151.78.100.1 | 151.78.100.14 | 151.78.100.15 | 14 |
| 2 | 151.78.100.16/28 | 151.78.100.16 | 151.78.100.17 | 151.78.100.30 | 151.78.100.31 | 14 |
| 3 | 151.78.100.32/28 | 151.78.100.32 | 151.78.100.33 | 151.78.100.46 | 151.78.100.47 | 14 |
| 4 | 151.78.100.48/28 | 151.78.100.48 | 151.78.100.49 | 151.78.100.62 | 151.78.100.63 | 14 |
| 5 | 151.78.100.64/28 | 151.78.100.64 | 151.78.100.65 | 151.78.100.78 | 151.78.100.79 | 14 |
| 6 | 151.78.100.80/28 | 151.78.100.80 | 151.78.100.81 | 151.78.100.94 | 151.78.100.95 | 14 |
| 7 | 151.78.100.96/28 | 151.78.100.96 | 151.78.100.97 | 151.78.100.110 | 151.78.100.111 | 14 |
| 8 | 151.78.100.112/28 | 151.78.100.112 | 151.78.100.113 | 151.78.100.126 | 151.78.100.127 | 14 |
| 9 | 151.78.100.128/28 | 151.78.100.128 | 151.78.100.129 | 151.78.100.142 | 151.78.100.143 | 14 |
| 10 | 151.78.100.144/28 | 151.78.100.144 | 151.78.100.145 | 151.78.100.158 | 151.78.100.159 | 14 |
| 11 | 151.78.100.160/28 | 151.78.100.160 | 151.78.100.161 | 151.78.100.174 | 151.78.100.175 | 14 |
| 12 | 151.78.100.176/28 | 151.78.100.176 | 151.78.100.177 | 151.78.100.190 | 151.78.100.191 | 14 |
| 13 | 151.78.100.192/28 | 151.78.100.192 | 151.78.100.193 | 151.78.100.206 | 151.78.100.207 | 14 |
| 14 | 151.78.100.208/28 | 151.78.100.208 | 151.78.100.209 | 151.78.100.222 | 151.78.100.223 | 14 |
| 15 | 151.78.100.224/28 | 151.78.100.224 | 151.78.100.225 | 151.78.100.238 | 151.78.100.239 | 14 |
| 16 | 151.78.100.240/28 | 151.78.100.240 | 151.78.100.241 | 151.78.100.254 | 151.78.100.255 | 14 |
IP Address Sample
Showing first 16 of 256 total IPs.