This name would be ideally suited to a company in the AR or business sectors.
The word "123stop" contains seven characters and three syllables. Examples of popular three syllable names include Sainsbury's, Nescafé and Mastercard.
123stop.com is a dot com domain. Dot com domains are the most sought after top-level-domain in the world, used by famous websites like twitter.com. When you own a dot com, it is much easier to rank for your own name in search engines.