What is DNS and how does it work?
DNS stands for Domain Name System and is the system that the Internet uses to find the information on the web. Domain names are registered with a central organization in each country and each domain name is associated with two DNS servers, a primary server and a backup server. In the United States the registry is called InterNIC.
DNS stands for Domain Name System and is the system that the Internet uses to find the information on the web. Domain names are registered with a central organization in each country and each domain name is associated with two DNS servers, a primary server and a backup server. In the United States the registry is called InterNIC. When someone types in a Domain Name into a web browser their Internet Service Provider’s (ISPs) DNS computer looks into its cache for an IP (Internet Protocol) address associated with that domain name. If the ISP does not have an entry cached it sends a lookup query to InterNIC’s root servers which returns the DNS location associated with the domain name back to the ISP. Once the ISP’s computer finds the IP address it can access the web site. IP addresses are typically 12 digit numbers which identify a computer on the Internet. IP addresses are like street addresses. They refer to specific servers and their physical location on the network. Domain names are li
