Invented brand name, that vaguely alludes to the expression "on the trail".
The name "ontrel" has only six characters and just two syllables. Two-syllable names are highly rare and extremely sought after. Leading companies using two syllable names include Pepsi, Starbucks and Subway.
Ontrel.com is a dot com domain. Dot com domains are the most valuable top-level-domain in the world, used by famous websites like twitter.com. When most people think of a website, they think of a dot com.