Every device that is connected to the world wide web has a special identifier called IP (Internet Protocol) address. This includes computers, web servers, smart phones, switches, etc. The pool of IPs, that was introduced originally, is already distributed, so the so-called IPv4 IP addresses are steadily getting replaced with IPv6 addresses. Every domain that opens an internet site has an IP record, which is the address of the server where it is hosted. Using the IPv4 system, the record is called A and it is comprised of 4 groups of numbers from 1 to 255 split up with a dot, while with the IPv6 system it is called AAAA and it comprises of 8 groups of hexadecimal numbers i.e. this kind of records use digits from 0 to 9 and letters from A to F. An illustration of an AAAA record is 2010:0c48:43d3:2142:1012:8c3a:2475:2435 and this format can handle a significantly larger amount of IPs in comparison with the IPv4 format.