Definition
An A record maps a hostname directly to an IPv4 address (e.g., example.com → 93.184.216.34). It's the most common DNS record type. When you set up a website, you point your domain's A record to your web server's IP. Multiple A records on the same hostname enable basic load balancing (round-robin DNS). A records cannot point to hostnames — use a CNAME for that.
Use the tool: DNS Lookup — check a record for any domain.