52.101.81.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (52.101.81.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 52.101.81.127 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 | 52.101.81.0/25 |
| Network Address | 52.101.81.0 |
| Broadcast Address | 52.101.81.127 |
| 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 | 52.101.81.1 |
| Last Usable IP | 52.101.81.126 |
| Network (Hex) | 0x34655100 |
| Broadcast (Hex) | 0x3465517F |
| 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 52.101.81.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 52.101.81.0/26 | 52.101.81.0 | 52.101.81.1 | 52.101.81.62 | 52.101.81.63 | 62 |
| 2 | 52.101.81.64/26 | 52.101.81.64 | 52.101.81.65 | 52.101.81.126 | 52.101.81.127 | 62 |
Split 52.101.81.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 52.101.81.0/27 | 52.101.81.0 | 52.101.81.1 | 52.101.81.30 | 52.101.81.31 | 30 |
| 2 | 52.101.81.32/27 | 52.101.81.32 | 52.101.81.33 | 52.101.81.62 | 52.101.81.63 | 30 |
| 3 | 52.101.81.64/27 | 52.101.81.64 | 52.101.81.65 | 52.101.81.94 | 52.101.81.95 | 30 |
| 4 | 52.101.81.96/27 | 52.101.81.96 | 52.101.81.97 | 52.101.81.126 | 52.101.81.127 | 30 |
Split 52.101.81.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 52.101.81.0/28 | 52.101.81.0 | 52.101.81.1 | 52.101.81.14 | 52.101.81.15 | 14 |
| 2 | 52.101.81.16/28 | 52.101.81.16 | 52.101.81.17 | 52.101.81.30 | 52.101.81.31 | 14 |
| 3 | 52.101.81.32/28 | 52.101.81.32 | 52.101.81.33 | 52.101.81.46 | 52.101.81.47 | 14 |
| 4 | 52.101.81.48/28 | 52.101.81.48 | 52.101.81.49 | 52.101.81.62 | 52.101.81.63 | 14 |
| 5 | 52.101.81.64/28 | 52.101.81.64 | 52.101.81.65 | 52.101.81.78 | 52.101.81.79 | 14 |
| 6 | 52.101.81.80/28 | 52.101.81.80 | 52.101.81.81 | 52.101.81.94 | 52.101.81.95 | 14 |
| 7 | 52.101.81.96/28 | 52.101.81.96 | 52.101.81.97 | 52.101.81.110 | 52.101.81.111 | 14 |
| 8 | 52.101.81.112/28 | 52.101.81.112 | 52.101.81.113 | 52.101.81.126 | 52.101.81.127 | 14 |
Split 52.101.81.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 52.101.81.0/29 | 52.101.81.0 | 52.101.81.1 | 52.101.81.6 | 52.101.81.7 | 6 |
| 2 | 52.101.81.8/29 | 52.101.81.8 | 52.101.81.9 | 52.101.81.14 | 52.101.81.15 | 6 |
| 3 | 52.101.81.16/29 | 52.101.81.16 | 52.101.81.17 | 52.101.81.22 | 52.101.81.23 | 6 |
| 4 | 52.101.81.24/29 | 52.101.81.24 | 52.101.81.25 | 52.101.81.30 | 52.101.81.31 | 6 |
| 5 | 52.101.81.32/29 | 52.101.81.32 | 52.101.81.33 | 52.101.81.38 | 52.101.81.39 | 6 |
| 6 | 52.101.81.40/29 | 52.101.81.40 | 52.101.81.41 | 52.101.81.46 | 52.101.81.47 | 6 |
| 7 | 52.101.81.48/29 | 52.101.81.48 | 52.101.81.49 | 52.101.81.54 | 52.101.81.55 | 6 |
| 8 | 52.101.81.56/29 | 52.101.81.56 | 52.101.81.57 | 52.101.81.62 | 52.101.81.63 | 6 |
| 9 | 52.101.81.64/29 | 52.101.81.64 | 52.101.81.65 | 52.101.81.70 | 52.101.81.71 | 6 |
| 10 | 52.101.81.72/29 | 52.101.81.72 | 52.101.81.73 | 52.101.81.78 | 52.101.81.79 | 6 |
| 11 | 52.101.81.80/29 | 52.101.81.80 | 52.101.81.81 | 52.101.81.86 | 52.101.81.87 | 6 |
| 12 | 52.101.81.88/29 | 52.101.81.88 | 52.101.81.89 | 52.101.81.94 | 52.101.81.95 | 6 |
| 13 | 52.101.81.96/29 | 52.101.81.96 | 52.101.81.97 | 52.101.81.102 | 52.101.81.103 | 6 |
| 14 | 52.101.81.104/29 | 52.101.81.104 | 52.101.81.105 | 52.101.81.110 | 52.101.81.111 | 6 |
| 15 | 52.101.81.112/29 | 52.101.81.112 | 52.101.81.113 | 52.101.81.118 | 52.101.81.119 | 6 |
| 16 | 52.101.81.120/29 | 52.101.81.120 | 52.101.81.121 | 52.101.81.126 | 52.101.81.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.