An A Record connects a domain name to the IP address (Version 4) of the computer that hosts it. The IP address of a machine connected to the internet is determined by the A record, which uses a domain name. Address is represented by the letter A in the A Record.
The address you type when visiting a website, sending an email, connecting to Twitter or Facebook, or doing nearly anything else on the Internet is a string of words joined by dots. Enter www.dnsimple.com, for example, to get to the DNSimple website.
The IP address 188.8.131.52 is referenced by the A Record on our name server. This means that a request to www.dnsimple.com from your browser will be sent to the server at IP address 184.108.40.206.
A Records can be used for a variety of purposes, including providing redundancy and fallbacks by employing numerous A records for the same domain. Additionally, many names could point to the same IP address, in which case each would have its own A Record. RFC 1035 specifies the DNS A record.