IPTP-Style Network Utility
IP Subnet Calculator
The IP Subnet Calculator computes network values using network class, IP address, and subnet mask to generate full diagnostic data for IPv4, IPv6, and VLSM subnets.
Invalid IPv4 address format. Please enter four octets (e.g. 192.168.1.1).
Subnet Calculation Details
Class C
Private
| CIDR Notation | 192.168.1.0/24 |
|
| Input IP Address | 192.168.1.100 |
|
| Network Address | 192.168.1.0 |
|
| Subnet Mask | 255.255.255.0 |
|
| Wildcard (Inverse) Mask | 0.0.0.255 |
|
| Broadcast Address | 192.168.1.255 |
|
| First Usable Host (Min) | 192.168.1.1 |
|
| Last Usable Host (Max) | 192.168.1.254 |
|
| Usable Host Range | 192.168.1.1 - 192.168.1.254 |
|
| Total Address Count | 256 | |
| Usable Host Capacity | 254 |
32-Bit Binary Breakdown
Input IP:
Subnet Mask:
Network ID:
Broadcast ID:
Subnet Requirements (VLSM Allocation)
Specify required host capacities per department. The algorithm automatically allocates non-overlapping subnets sorted by host requirements.
VLSM Subnet Allocation Map
| Subnet Name | Req. Hosts | Allocated Network / CIDR | Subnet Mask | Usable Host Range | Broadcast IP | Capacity |
|---|---|---|---|---|---|---|
| Click "Calculate VLSM Allocation" above to generate subnet map. | ||||||
Invalid IPv6 address format.
IPv6 Subnet Details
| Compressed IPv6 | 2001:db8:85a3::8a2e:370:7334 |
|
| Full Expanded IPv6 | 2001:0db8:85a3:0000:0000:8a2e:0370:7334 |
|
| Network Prefix | 2001:db8:85a3::/64 |
|
| Number of /64 Subnets | 1 | |
| Subnet Address Range | 2001:db8:85a3:: - 2001:db8:85a3::ffff:ffff:ffff:ffff |
|
| Total Address Capacity | 18,446,744,073,709,551,616 |