30.5.157.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (30.5.157.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 30.5.157.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 30.5.157.0/25 |
| Network Address | 30.5.157.0 |
| Broadcast Address | 30.5.157.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class A |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 30.5.157.1 |
| Last Usable IP | 30.5.157.126 |
| Network (Hex) | 0x1E059D00 |
| Broadcast (Hex) | 0x1E059D7F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 30.5.157.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.5.157.0/26 | 30.5.157.0 | 30.5.157.1 | 30.5.157.62 | 30.5.157.63 | 62 |
| 2 | 30.5.157.64/26 | 30.5.157.64 | 30.5.157.65 | 30.5.157.126 | 30.5.157.127 | 62 |
Split 30.5.157.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.5.157.0/27 | 30.5.157.0 | 30.5.157.1 | 30.5.157.30 | 30.5.157.31 | 30 |
| 2 | 30.5.157.32/27 | 30.5.157.32 | 30.5.157.33 | 30.5.157.62 | 30.5.157.63 | 30 |
| 3 | 30.5.157.64/27 | 30.5.157.64 | 30.5.157.65 | 30.5.157.94 | 30.5.157.95 | 30 |
| 4 | 30.5.157.96/27 | 30.5.157.96 | 30.5.157.97 | 30.5.157.126 | 30.5.157.127 | 30 |
Split 30.5.157.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.5.157.0/28 | 30.5.157.0 | 30.5.157.1 | 30.5.157.14 | 30.5.157.15 | 14 |
| 2 | 30.5.157.16/28 | 30.5.157.16 | 30.5.157.17 | 30.5.157.30 | 30.5.157.31 | 14 |
| 3 | 30.5.157.32/28 | 30.5.157.32 | 30.5.157.33 | 30.5.157.46 | 30.5.157.47 | 14 |
| 4 | 30.5.157.48/28 | 30.5.157.48 | 30.5.157.49 | 30.5.157.62 | 30.5.157.63 | 14 |
| 5 | 30.5.157.64/28 | 30.5.157.64 | 30.5.157.65 | 30.5.157.78 | 30.5.157.79 | 14 |
| 6 | 30.5.157.80/28 | 30.5.157.80 | 30.5.157.81 | 30.5.157.94 | 30.5.157.95 | 14 |
| 7 | 30.5.157.96/28 | 30.5.157.96 | 30.5.157.97 | 30.5.157.110 | 30.5.157.111 | 14 |
| 8 | 30.5.157.112/28 | 30.5.157.112 | 30.5.157.113 | 30.5.157.126 | 30.5.157.127 | 14 |
Split 30.5.157.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.5.157.0/29 | 30.5.157.0 | 30.5.157.1 | 30.5.157.6 | 30.5.157.7 | 6 |
| 2 | 30.5.157.8/29 | 30.5.157.8 | 30.5.157.9 | 30.5.157.14 | 30.5.157.15 | 6 |
| 3 | 30.5.157.16/29 | 30.5.157.16 | 30.5.157.17 | 30.5.157.22 | 30.5.157.23 | 6 |
| 4 | 30.5.157.24/29 | 30.5.157.24 | 30.5.157.25 | 30.5.157.30 | 30.5.157.31 | 6 |
| 5 | 30.5.157.32/29 | 30.5.157.32 | 30.5.157.33 | 30.5.157.38 | 30.5.157.39 | 6 |
| 6 | 30.5.157.40/29 | 30.5.157.40 | 30.5.157.41 | 30.5.157.46 | 30.5.157.47 | 6 |
| 7 | 30.5.157.48/29 | 30.5.157.48 | 30.5.157.49 | 30.5.157.54 | 30.5.157.55 | 6 |
| 8 | 30.5.157.56/29 | 30.5.157.56 | 30.5.157.57 | 30.5.157.62 | 30.5.157.63 | 6 |
| 9 | 30.5.157.64/29 | 30.5.157.64 | 30.5.157.65 | 30.5.157.70 | 30.5.157.71 | 6 |
| 10 | 30.5.157.72/29 | 30.5.157.72 | 30.5.157.73 | 30.5.157.78 | 30.5.157.79 | 6 |
| 11 | 30.5.157.80/29 | 30.5.157.80 | 30.5.157.81 | 30.5.157.86 | 30.5.157.87 | 6 |
| 12 | 30.5.157.88/29 | 30.5.157.88 | 30.5.157.89 | 30.5.157.94 | 30.5.157.95 | 6 |
| 13 | 30.5.157.96/29 | 30.5.157.96 | 30.5.157.97 | 30.5.157.102 | 30.5.157.103 | 6 |
| 14 | 30.5.157.104/29 | 30.5.157.104 | 30.5.157.105 | 30.5.157.110 | 30.5.157.111 | 6 |
| 15 | 30.5.157.112/29 | 30.5.157.112 | 30.5.157.113 | 30.5.157.118 | 30.5.157.119 | 6 |
| 16 | 30.5.157.120/29 | 30.5.157.120 | 30.5.157.121 | 30.5.157.126 | 30.5.157.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.