NNN is an abbreviation for a three number domain name.

NNN refers to the domain itself and makes no specification as to the Top Level Domain (TLD), such as com or net.

An example of an NNN.com domain name is 052.com.

An example of an NNN.net domain name is 052.net.

There are total of 1,000 NNN domain names available.

All NNN.com (three number .com) domains were registered by 1998. Due to their rarity and demand, they have been consistently valuable since their complete registration.