179.194.21.0/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (179.194.21.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 179.194.21.127 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 | 179.194.21.0/25 |
| Network Address | 179.194.21.0 |
| Broadcast Address | 179.194.21.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class B |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 179.194.21.1 |
| Last Usable IP | 179.194.21.126 |
| Network (Hex) | 0xB3C21500 |
| Broadcast (Hex) | 0xB3C2157F |
| 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 179.194.21.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 179.194.21.0/26 | 179.194.21.0 | 179.194.21.1 | 179.194.21.62 | 179.194.21.63 | 62 |
| 2 | 179.194.21.64/26 | 179.194.21.64 | 179.194.21.65 | 179.194.21.126 | 179.194.21.127 | 62 |
Split 179.194.21.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 179.194.21.0/27 | 179.194.21.0 | 179.194.21.1 | 179.194.21.30 | 179.194.21.31 | 30 |
| 2 | 179.194.21.32/27 | 179.194.21.32 | 179.194.21.33 | 179.194.21.62 | 179.194.21.63 | 30 |
| 3 | 179.194.21.64/27 | 179.194.21.64 | 179.194.21.65 | 179.194.21.94 | 179.194.21.95 | 30 |
| 4 | 179.194.21.96/27 | 179.194.21.96 | 179.194.21.97 | 179.194.21.126 | 179.194.21.127 | 30 |
Split 179.194.21.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 179.194.21.0/28 | 179.194.21.0 | 179.194.21.1 | 179.194.21.14 | 179.194.21.15 | 14 |
| 2 | 179.194.21.16/28 | 179.194.21.16 | 179.194.21.17 | 179.194.21.30 | 179.194.21.31 | 14 |
| 3 | 179.194.21.32/28 | 179.194.21.32 | 179.194.21.33 | 179.194.21.46 | 179.194.21.47 | 14 |
| 4 | 179.194.21.48/28 | 179.194.21.48 | 179.194.21.49 | 179.194.21.62 | 179.194.21.63 | 14 |
| 5 | 179.194.21.64/28 | 179.194.21.64 | 179.194.21.65 | 179.194.21.78 | 179.194.21.79 | 14 |
| 6 | 179.194.21.80/28 | 179.194.21.80 | 179.194.21.81 | 179.194.21.94 | 179.194.21.95 | 14 |
| 7 | 179.194.21.96/28 | 179.194.21.96 | 179.194.21.97 | 179.194.21.110 | 179.194.21.111 | 14 |
| 8 | 179.194.21.112/28 | 179.194.21.112 | 179.194.21.113 | 179.194.21.126 | 179.194.21.127 | 14 |
Split 179.194.21.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 179.194.21.0/29 | 179.194.21.0 | 179.194.21.1 | 179.194.21.6 | 179.194.21.7 | 6 |
| 2 | 179.194.21.8/29 | 179.194.21.8 | 179.194.21.9 | 179.194.21.14 | 179.194.21.15 | 6 |
| 3 | 179.194.21.16/29 | 179.194.21.16 | 179.194.21.17 | 179.194.21.22 | 179.194.21.23 | 6 |
| 4 | 179.194.21.24/29 | 179.194.21.24 | 179.194.21.25 | 179.194.21.30 | 179.194.21.31 | 6 |
| 5 | 179.194.21.32/29 | 179.194.21.32 | 179.194.21.33 | 179.194.21.38 | 179.194.21.39 | 6 |
| 6 | 179.194.21.40/29 | 179.194.21.40 | 179.194.21.41 | 179.194.21.46 | 179.194.21.47 | 6 |
| 7 | 179.194.21.48/29 | 179.194.21.48 | 179.194.21.49 | 179.194.21.54 | 179.194.21.55 | 6 |
| 8 | 179.194.21.56/29 | 179.194.21.56 | 179.194.21.57 | 179.194.21.62 | 179.194.21.63 | 6 |
| 9 | 179.194.21.64/29 | 179.194.21.64 | 179.194.21.65 | 179.194.21.70 | 179.194.21.71 | 6 |
| 10 | 179.194.21.72/29 | 179.194.21.72 | 179.194.21.73 | 179.194.21.78 | 179.194.21.79 | 6 |
| 11 | 179.194.21.80/29 | 179.194.21.80 | 179.194.21.81 | 179.194.21.86 | 179.194.21.87 | 6 |
| 12 | 179.194.21.88/29 | 179.194.21.88 | 179.194.21.89 | 179.194.21.94 | 179.194.21.95 | 6 |
| 13 | 179.194.21.96/29 | 179.194.21.96 | 179.194.21.97 | 179.194.21.102 | 179.194.21.103 | 6 |
| 14 | 179.194.21.104/29 | 179.194.21.104 | 179.194.21.105 | 179.194.21.110 | 179.194.21.111 | 6 |
| 15 | 179.194.21.112/29 | 179.194.21.112 | 179.194.21.113 | 179.194.21.118 | 179.194.21.119 | 6 |
| 16 | 179.194.21.120/29 | 179.194.21.120 | 179.194.21.121 | 179.194.21.126 | 179.194.21.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.