Number keeps calling and leaves no message. When you call back, you get "Hello, no one can take your call right now, leave a message". According to "Why Call Me", it says

Phone number: 623-349-1792

is located in Scottsdale, Arizona.

Its exchange 349 is managed by MOUNTAIN TELECOMMUNICATIONS, I.

The number is currently on switch number SCDLAZQFDS0 (switch is a technical specification for phone hobbyists) .