IPv6 Addresses CIDR Notations Boundary Range Tool

Check if an IP address range is in a CIDR range

You can use this tool to calculate the IP Address range (in IPv6 format) is a part of a specified CIDR notation range. It also helps to show the smaller range and the list of ranges for the specific IP v6 network addresses. 

Use this tool to evaluate testing the IP address range presence without any complicated calculations or reasoning. 

How to determine IP addresses smallest range

1. Input a valid IP address in IPv6 format
2. Input a valid IP address in IPv6 format with the CIDR notation range
3. Click 'Check' to find the range information.
4. For instance, to test it, enter the 2001:DB8::16 and 2001:DB8::64 calculate the ranges.

IPv6 Addresses 

• 2001:0db8:1234:5678:9abc:def0:1234:5678
• fd12:3456:789a:1::2
• 2001:0:9d38:6abd:0:0:0:1
• 2409:8a61:3c0c:85::abcd:5678
• 2001:0db8::1:0:0:0:1
• fe80::1
• 2001:db8::
• 2a02:120b:2c0d:0010:0000:0000:0a0b:0304

These are IPv6 addresses. IPv6 (Internet Protocol version 6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion.

Network layer supernetting

The reverse of subnetting is supernetting. A single large network is partitioned into numerous smaller subnetworks through subnetting. Supernetting is the process of fusing several networks into a larger network called a Supernetwork or Supernet.

Supernetting is mostly used in route summarization, which combines routes to numerous networks with similar network prefixes into a single routing entry that points to a Super network that includes all the networks. As a result, the size of routing databases and routing updates sent across routing protocols are greatly reduced. For example, 192.168.1.0/25 and route 193.168.1.128/25 cannot be combined.

Only a route with a larger block size than the route being summarised can do so. For instance, a route of block size 64 cannot be condensed into a route of block size 32, but two routes of block size 32 can be condensed into a single route of block size 64.

Adding the block sizes of all sequential routes and employing Subnetting, which provides the block size needed to calculate the summary route, are the simplest methods.For example, if we have two sequential routes of block size 16, we can summarize them in a single route of block size 32.