30.45.7.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (30.45.7.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 30.45.7.127 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 | 30.45.7.0/25 |
| Network Address | 30.45.7.0 |
| Broadcast Address | 30.45.7.127 |
| 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 | 30.45.7.1 |
| Last Usable IP | 30.45.7.126 |
| Network (Hex) | 0x1E2D0700 |
| Broadcast (Hex) | 0x1E2D077F |
| 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 30.45.7.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.45.7.0/26 | 30.45.7.0 | 30.45.7.1 | 30.45.7.62 | 30.45.7.63 | 62 |
| 2 | 30.45.7.64/26 | 30.45.7.64 | 30.45.7.65 | 30.45.7.126 | 30.45.7.127 | 62 |
Split 30.45.7.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.45.7.0/27 | 30.45.7.0 | 30.45.7.1 | 30.45.7.30 | 30.45.7.31 | 30 |
| 2 | 30.45.7.32/27 | 30.45.7.32 | 30.45.7.33 | 30.45.7.62 | 30.45.7.63 | 30 |
| 3 | 30.45.7.64/27 | 30.45.7.64 | 30.45.7.65 | 30.45.7.94 | 30.45.7.95 | 30 |
| 4 | 30.45.7.96/27 | 30.45.7.96 | 30.45.7.97 | 30.45.7.126 | 30.45.7.127 | 30 |
Split 30.45.7.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.45.7.0/28 | 30.45.7.0 | 30.45.7.1 | 30.45.7.14 | 30.45.7.15 | 14 |
| 2 | 30.45.7.16/28 | 30.45.7.16 | 30.45.7.17 | 30.45.7.30 | 30.45.7.31 | 14 |
| 3 | 30.45.7.32/28 | 30.45.7.32 | 30.45.7.33 | 30.45.7.46 | 30.45.7.47 | 14 |
| 4 | 30.45.7.48/28 | 30.45.7.48 | 30.45.7.49 | 30.45.7.62 | 30.45.7.63 | 14 |
| 5 | 30.45.7.64/28 | 30.45.7.64 | 30.45.7.65 | 30.45.7.78 | 30.45.7.79 | 14 |
| 6 | 30.45.7.80/28 | 30.45.7.80 | 30.45.7.81 | 30.45.7.94 | 30.45.7.95 | 14 |
| 7 | 30.45.7.96/28 | 30.45.7.96 | 30.45.7.97 | 30.45.7.110 | 30.45.7.111 | 14 |
| 8 | 30.45.7.112/28 | 30.45.7.112 | 30.45.7.113 | 30.45.7.126 | 30.45.7.127 | 14 |
Split 30.45.7.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 30.45.7.0/29 | 30.45.7.0 | 30.45.7.1 | 30.45.7.6 | 30.45.7.7 | 6 |
| 2 | 30.45.7.8/29 | 30.45.7.8 | 30.45.7.9 | 30.45.7.14 | 30.45.7.15 | 6 |
| 3 | 30.45.7.16/29 | 30.45.7.16 | 30.45.7.17 | 30.45.7.22 | 30.45.7.23 | 6 |
| 4 | 30.45.7.24/29 | 30.45.7.24 | 30.45.7.25 | 30.45.7.30 | 30.45.7.31 | 6 |
| 5 | 30.45.7.32/29 | 30.45.7.32 | 30.45.7.33 | 30.45.7.38 | 30.45.7.39 | 6 |
| 6 | 30.45.7.40/29 | 30.45.7.40 | 30.45.7.41 | 30.45.7.46 | 30.45.7.47 | 6 |
| 7 | 30.45.7.48/29 | 30.45.7.48 | 30.45.7.49 | 30.45.7.54 | 30.45.7.55 | 6 |
| 8 | 30.45.7.56/29 | 30.45.7.56 | 30.45.7.57 | 30.45.7.62 | 30.45.7.63 | 6 |
| 9 | 30.45.7.64/29 | 30.45.7.64 | 30.45.7.65 | 30.45.7.70 | 30.45.7.71 | 6 |
| 10 | 30.45.7.72/29 | 30.45.7.72 | 30.45.7.73 | 30.45.7.78 | 30.45.7.79 | 6 |
| 11 | 30.45.7.80/29 | 30.45.7.80 | 30.45.7.81 | 30.45.7.86 | 30.45.7.87 | 6 |
| 12 | 30.45.7.88/29 | 30.45.7.88 | 30.45.7.89 | 30.45.7.94 | 30.45.7.95 | 6 |
| 13 | 30.45.7.96/29 | 30.45.7.96 | 30.45.7.97 | 30.45.7.102 | 30.45.7.103 | 6 |
| 14 | 30.45.7.104/29 | 30.45.7.104 | 30.45.7.105 | 30.45.7.110 | 30.45.7.111 | 6 |
| 15 | 30.45.7.112/29 | 30.45.7.112 | 30.45.7.113 | 30.45.7.118 | 30.45.7.119 | 6 |
| 16 | 30.45.7.120/29 | 30.45.7.120 | 30.45.7.121 | 30.45.7.126 | 30.45.7.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.