Introduced in 1985, the Domain Name System is at the heart of the Internet browsing experience — enabling users to easily find anything that is connected. Each entity on the network is assigned a string of numbers — eight under IPv4 — or, in IPv6, a series of numbers and letters. Invisible to users, each request to visit a site, device, etc., is switched from the typical ‘name@domainname.suffix’ to the assigned numerical or alphanumerical string, which is then verified by the receiving server before the connection is made.