Ipv6 Calculator

This IPv6 Calculator allows users to input an IPv6 address and prefix length to compute and display the network address, host addresses, total number of hosts, subnet mask, and both binary and notational representations of the address.

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How to Use the IPv6 Calculator

This guide will walk you through the use of an IPv6 Calculator for managing and understanding IPv6 addressing. The calculator allows you to input a desired IPv6 address, choose the address format, and calculate various related fields, such as the network address and the total number of hosts.

Input Section

Start by providing the necessary inputs in the calculator. This section consists of a few fields:

  • IPv6 Address Format: This is a drop-down selection where you determine the format of the IPv6 address you are working with. You have two options:

    • Full Address: This consists of 8 groups of 4 hexadecimal digits (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
    • Compressed Address: This uses “::” to represent consecutive sections of zero values (e.g., 2001:db8::370:7334).
  • IPv6 Address: Enter the target IPv6 address you want to calculate further information on. This should be in the notation as chosen in the previous step.
  • Prefix Length: Specify the prefix length, which can range from 1 to 128. This length indicates the number of bits that represent the network portion of the address.

Result Fields

Once you have entered the input data, the calculator will provide several pieces of related information. These are computed based on your inputs:

  • Network Address: This is the calculated network address. It restricts the address to the network portion of the IP range, calculated by flooring the network portion logic.
  • First Host Address: Represents the first usable address in the subnet, derived as one unit higher than the network address.
  • Last Host Address: This is the highest address in the address block, generally two less than the last possible address.
  • Total Number of Hosts: Calculates the total count of possible host addresses in the specified network, minus the network and broadcast addresses.
  • Subnet Mask: Shows the subnet mask based on the prefix length, calculated as the total length minus the prefix length.
  • Binary Representation: Presents the entire IPv6 address in a 128-bit binary format, indicating fully expanded groups also in binary.
  • Expanded Notation: Displays your IPv6 address in a fully expanded hexadecimal notation.
  • Compressed Notation: Provides the compressed form of your IPv6 address using “::” to replace consecutive zeros.

By following the steps above, the IPv6 Calculator will help you better understand and use IPv6 addresses effectively.