Domain Name System
Internet Protocol Address is a 32-bit unique numeric label that helps to indentify Network or Host Location on the Internet. IP Address is formatted with four numbers and separated with three decimal points, an example is 127.27.15.37. Each number can define from 0 to 255. IP Address is defined with 32-bit number based on Internet Protocol Version 4 or IPv4 and IP Address can categories into three types are called Class A, Class B and Class C. Class A is support 16 Million Hosts on each of 126 Networks. Class B is support 65,000 Hosts on each of 16,000 Networks Class C is support 254 Hosts on each of 2 Million Networks.
Domain Name System was invented to simplify the Internet communication from traditional IP Address Method. Domain Name is a unique name that helps to identify Web Server IP Address information on Internet. An instance, open a browser application and type www.google.com in the address column, the system should communicate with different IP Addresses on Internet. Every Domain name has a suffix that designates Top Level Domain on Internet.
ICANN - Internet Corporation for Assigned Names and Numbers is non-profit organization founded on 1998. ICANN is maintaining Domain Names, Global Internet Protocol Address Space Allocation, Protocol Identifier Assignment, Generic Top Level Domain Name, Country Code Top Level Domain Name and Main Internet Server System Management Functions with IANA - Internet Assigned Numbers Authority.
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