Every device that is connected to the world wide web has a special identifier referred to as IP (Internet Protocol) address. This includes computer systems, web servers, smartphones, switches, and so on. The pool of IP addresses, that was introduced originally, has been distributed, therefore the so-called IPv4 IP addresses are progressively getting replaced with IPv6 addresses. Every domain name which opens a website has an IP record, that is the address of the server where it is hosted. With the IPv4 system, the record is called A and it is comprised of 4 sets of numbers from 1 to 255 separated using a dot, while within the IPv6 system it is called AAAA and it is made up of eight groups of hexadecimal numbers i.e. this kind of records use digits from 0 to 9 and letters from A to F. An example of an AAAA record is 2010:0c48:43d3:2142:1012:8c3a:2475:2435 and this format can handle a considerably larger amount of IPs compared with the IPv4 format.