65.3.172.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (65.3.172.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 65.3.172.127 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 | 65.3.172.0/25 |
| Network Address | 65.3.172.0 |
| Broadcast Address | 65.3.172.127 |
| 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 | 65.3.172.1 |
| Last Usable IP | 65.3.172.126 |
| Network (Hex) | 0x4103AC00 |
| Broadcast (Hex) | 0x4103AC7F |
| 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 65.3.172.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 65.3.172.0/26 | 65.3.172.0 | 65.3.172.1 | 65.3.172.62 | 65.3.172.63 | 62 |
| 2 | 65.3.172.64/26 | 65.3.172.64 | 65.3.172.65 | 65.3.172.126 | 65.3.172.127 | 62 |
Split 65.3.172.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 65.3.172.0/27 | 65.3.172.0 | 65.3.172.1 | 65.3.172.30 | 65.3.172.31 | 30 |
| 2 | 65.3.172.32/27 | 65.3.172.32 | 65.3.172.33 | 65.3.172.62 | 65.3.172.63 | 30 |
| 3 | 65.3.172.64/27 | 65.3.172.64 | 65.3.172.65 | 65.3.172.94 | 65.3.172.95 | 30 |
| 4 | 65.3.172.96/27 | 65.3.172.96 | 65.3.172.97 | 65.3.172.126 | 65.3.172.127 | 30 |
Split 65.3.172.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 65.3.172.0/28 | 65.3.172.0 | 65.3.172.1 | 65.3.172.14 | 65.3.172.15 | 14 |
| 2 | 65.3.172.16/28 | 65.3.172.16 | 65.3.172.17 | 65.3.172.30 | 65.3.172.31 | 14 |
| 3 | 65.3.172.32/28 | 65.3.172.32 | 65.3.172.33 | 65.3.172.46 | 65.3.172.47 | 14 |
| 4 | 65.3.172.48/28 | 65.3.172.48 | 65.3.172.49 | 65.3.172.62 | 65.3.172.63 | 14 |
| 5 | 65.3.172.64/28 | 65.3.172.64 | 65.3.172.65 | 65.3.172.78 | 65.3.172.79 | 14 |
| 6 | 65.3.172.80/28 | 65.3.172.80 | 65.3.172.81 | 65.3.172.94 | 65.3.172.95 | 14 |
| 7 | 65.3.172.96/28 | 65.3.172.96 | 65.3.172.97 | 65.3.172.110 | 65.3.172.111 | 14 |
| 8 | 65.3.172.112/28 | 65.3.172.112 | 65.3.172.113 | 65.3.172.126 | 65.3.172.127 | 14 |
Split 65.3.172.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 65.3.172.0/29 | 65.3.172.0 | 65.3.172.1 | 65.3.172.6 | 65.3.172.7 | 6 |
| 2 | 65.3.172.8/29 | 65.3.172.8 | 65.3.172.9 | 65.3.172.14 | 65.3.172.15 | 6 |
| 3 | 65.3.172.16/29 | 65.3.172.16 | 65.3.172.17 | 65.3.172.22 | 65.3.172.23 | 6 |
| 4 | 65.3.172.24/29 | 65.3.172.24 | 65.3.172.25 | 65.3.172.30 | 65.3.172.31 | 6 |
| 5 | 65.3.172.32/29 | 65.3.172.32 | 65.3.172.33 | 65.3.172.38 | 65.3.172.39 | 6 |
| 6 | 65.3.172.40/29 | 65.3.172.40 | 65.3.172.41 | 65.3.172.46 | 65.3.172.47 | 6 |
| 7 | 65.3.172.48/29 | 65.3.172.48 | 65.3.172.49 | 65.3.172.54 | 65.3.172.55 | 6 |
| 8 | 65.3.172.56/29 | 65.3.172.56 | 65.3.172.57 | 65.3.172.62 | 65.3.172.63 | 6 |
| 9 | 65.3.172.64/29 | 65.3.172.64 | 65.3.172.65 | 65.3.172.70 | 65.3.172.71 | 6 |
| 10 | 65.3.172.72/29 | 65.3.172.72 | 65.3.172.73 | 65.3.172.78 | 65.3.172.79 | 6 |
| 11 | 65.3.172.80/29 | 65.3.172.80 | 65.3.172.81 | 65.3.172.86 | 65.3.172.87 | 6 |
| 12 | 65.3.172.88/29 | 65.3.172.88 | 65.3.172.89 | 65.3.172.94 | 65.3.172.95 | 6 |
| 13 | 65.3.172.96/29 | 65.3.172.96 | 65.3.172.97 | 65.3.172.102 | 65.3.172.103 | 6 |
| 14 | 65.3.172.104/29 | 65.3.172.104 | 65.3.172.105 | 65.3.172.110 | 65.3.172.111 | 6 |
| 15 | 65.3.172.112/29 | 65.3.172.112 | 65.3.172.113 | 65.3.172.118 | 65.3.172.119 | 6 |
| 16 | 65.3.172.120/29 | 65.3.172.120 | 65.3.172.121 | 65.3.172.126 | 65.3.172.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.