100.101.36.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (100.101.36.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 100.101.36.127 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 | 100.101.36.0/25 |
| Network Address | 100.101.36.0 |
| Broadcast Address | 100.101.36.127 |
| 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 | 100.101.36.1 |
| Last Usable IP | 100.101.36.126 |
| Network (Hex) | 0x64652400 |
| Broadcast (Hex) | 0x6465247F |
| 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 100.101.36.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.101.36.0/26 | 100.101.36.0 | 100.101.36.1 | 100.101.36.62 | 100.101.36.63 | 62 |
| 2 | 100.101.36.64/26 | 100.101.36.64 | 100.101.36.65 | 100.101.36.126 | 100.101.36.127 | 62 |
Split 100.101.36.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.101.36.0/27 | 100.101.36.0 | 100.101.36.1 | 100.101.36.30 | 100.101.36.31 | 30 |
| 2 | 100.101.36.32/27 | 100.101.36.32 | 100.101.36.33 | 100.101.36.62 | 100.101.36.63 | 30 |
| 3 | 100.101.36.64/27 | 100.101.36.64 | 100.101.36.65 | 100.101.36.94 | 100.101.36.95 | 30 |
| 4 | 100.101.36.96/27 | 100.101.36.96 | 100.101.36.97 | 100.101.36.126 | 100.101.36.127 | 30 |
Split 100.101.36.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.101.36.0/28 | 100.101.36.0 | 100.101.36.1 | 100.101.36.14 | 100.101.36.15 | 14 |
| 2 | 100.101.36.16/28 | 100.101.36.16 | 100.101.36.17 | 100.101.36.30 | 100.101.36.31 | 14 |
| 3 | 100.101.36.32/28 | 100.101.36.32 | 100.101.36.33 | 100.101.36.46 | 100.101.36.47 | 14 |
| 4 | 100.101.36.48/28 | 100.101.36.48 | 100.101.36.49 | 100.101.36.62 | 100.101.36.63 | 14 |
| 5 | 100.101.36.64/28 | 100.101.36.64 | 100.101.36.65 | 100.101.36.78 | 100.101.36.79 | 14 |
| 6 | 100.101.36.80/28 | 100.101.36.80 | 100.101.36.81 | 100.101.36.94 | 100.101.36.95 | 14 |
| 7 | 100.101.36.96/28 | 100.101.36.96 | 100.101.36.97 | 100.101.36.110 | 100.101.36.111 | 14 |
| 8 | 100.101.36.112/28 | 100.101.36.112 | 100.101.36.113 | 100.101.36.126 | 100.101.36.127 | 14 |
Split 100.101.36.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 100.101.36.0/29 | 100.101.36.0 | 100.101.36.1 | 100.101.36.6 | 100.101.36.7 | 6 |
| 2 | 100.101.36.8/29 | 100.101.36.8 | 100.101.36.9 | 100.101.36.14 | 100.101.36.15 | 6 |
| 3 | 100.101.36.16/29 | 100.101.36.16 | 100.101.36.17 | 100.101.36.22 | 100.101.36.23 | 6 |
| 4 | 100.101.36.24/29 | 100.101.36.24 | 100.101.36.25 | 100.101.36.30 | 100.101.36.31 | 6 |
| 5 | 100.101.36.32/29 | 100.101.36.32 | 100.101.36.33 | 100.101.36.38 | 100.101.36.39 | 6 |
| 6 | 100.101.36.40/29 | 100.101.36.40 | 100.101.36.41 | 100.101.36.46 | 100.101.36.47 | 6 |
| 7 | 100.101.36.48/29 | 100.101.36.48 | 100.101.36.49 | 100.101.36.54 | 100.101.36.55 | 6 |
| 8 | 100.101.36.56/29 | 100.101.36.56 | 100.101.36.57 | 100.101.36.62 | 100.101.36.63 | 6 |
| 9 | 100.101.36.64/29 | 100.101.36.64 | 100.101.36.65 | 100.101.36.70 | 100.101.36.71 | 6 |
| 10 | 100.101.36.72/29 | 100.101.36.72 | 100.101.36.73 | 100.101.36.78 | 100.101.36.79 | 6 |
| 11 | 100.101.36.80/29 | 100.101.36.80 | 100.101.36.81 | 100.101.36.86 | 100.101.36.87 | 6 |
| 12 | 100.101.36.88/29 | 100.101.36.88 | 100.101.36.89 | 100.101.36.94 | 100.101.36.95 | 6 |
| 13 | 100.101.36.96/29 | 100.101.36.96 | 100.101.36.97 | 100.101.36.102 | 100.101.36.103 | 6 |
| 14 | 100.101.36.104/29 | 100.101.36.104 | 100.101.36.105 | 100.101.36.110 | 100.101.36.111 | 6 |
| 15 | 100.101.36.112/29 | 100.101.36.112 | 100.101.36.113 | 100.101.36.118 | 100.101.36.119 | 6 |
| 16 | 100.101.36.120/29 | 100.101.36.120 | 100.101.36.121 | 100.101.36.126 | 100.101.36.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.