How To Register A Website Domain Name http Millions of .COMs have already been purchased. Do you have yours? One of the very first Top-Level Domains (TLD) established in January 1985, .COM has since grown to become the worlds most popular TLD. Dozens of other TLDs are now available, but no matter how many new extensions may be added, everyone agrees .COM is still the "Rodeo Drive of the Web." ( Do you have yours?