Communicative domain name which sound like an expression "call who?". Incredibly catchy and professional.
The word "calhoo" contains only six characters and just two syllables. Two syllable names make popular global brands. Established brands using two syllable names include Kleenex, Google and Disney.
Calhoo.com is a dot com domain. Dot com domains are the most valuable top-level-domain in the world, used by famous websites like facebook.com. Owning a dot com says that you own the word "calhoo" online.
This domain was first registered in June 2016. Older domains have an advantage when ranking in search engines.