IP Subnet Calculator

IP Address: Subnet Mask:

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Network Class:

Usable IP Range:

Subnet Mask:

IP Class:

 

IP Address and Subnet Mask Explained:

IP Address:

An IP (Internet Protocol) address is a unique numerical label assigned to each device connected to a computer network that uses the IP for communication. It serves as the identifier for the device on the network and allows it to communicate with other devices. There are two versions of IP addresses:

1. IPv4 (Internet Protocol version 4): This is the most commonly used version, consisting of four sets of numbers separated by periods, for example, 192.168.1.1. Each set can range from 0 to 255.
2. IPv6 (Internet Protocol version 6): This is the next-generation IP address format, designed to provide a much larger address space (128-bit addresses). It is written as eight groups of four hexadecimal digits, separated by colons, e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

Subnet Mask:

A subnet mask is used to divide the IP address into network and host parts. It determines the network portion of an IP address and helps in identifying which part of the IP address belongs to the network and which part belongs to the host. The subnet mask is a 32-bit number (for IPv4) or 128-bit number (for IPv6), and it is typically written in a format similar to an IP address but with zeros in the host portion.

• For IPv4:
  • A subnet mask is written in a dotted decimal format similar to an IP address, e.g., 255.255.255.0.
  • The 255 indicates which parts of the address are used for the network, while the 0 indicates the part that is used for hosts.
• For IPv6:
  • Subnet masks are written in the same hexadecimal notation as IPv6 addresses. The subnet mask determines which bits in the IPv6 address are used for the network and which are used for hosts.

How to Use in the Tool:

1. Input Fields:
   • IP Address: Enter the IP address for which you want to calculate the subnet details.
   • Subnet Mask: Enter the subnet mask associated with the IP address.
2. Calculation:
   • The tool will process the input IP address and subnet mask to:
     • Determine the network class (A, B, C, D, or E) based on the first octet.
     • Calculate the usable IP range (the range of IPs from the network address to the broadcast address).
     • Provide the subnet mask.
     • Identify the IP class (e.g., Class A, Class B, Class C, etc.).
3. Example:
   • IP Address: 192.168.1.10
   • Subnet Mask: 255.255.255.0
   • Usage:
     • The IP 192.168.1.10 belongs to the network 192.168.1.0 with a subnet mask of 255.255.255.0.
     • The tool will output the network class as C, usable IP range from 192.168.1.1 to 192.168.1.254, the subnet mask, and classify the IP address as Class C.

This explanation helps you understand what IP addresses and subnet masks are, and how to use them in a subnet calculator tool to determine useful network information.