2 Letters

Domain names consisting of two letters (LL) are highly memorable due to the keyword's brevity. Anyone can memorize a two-letter combination, regardless of the top-level domain (TLD) that it's associated with.

Why do domain names have to be unique?

For your website to have a unique identity, a domain name is essential. The domain name has to be unique to ensure that no two parties hold the same domain name as this can create a problem and will defeat the purpose of building your brand identity.