This number is spoofed as there is no "172" exchane in any area code in the USA or Canada.

Found this number in my call logs, I wasn't in the house to hear the phone ring, because I had run outside to roll up the car windows as a powerful rainstorm was beginning. When I came back inside I did not look at the phone. The caller left no voice mail.
Name                           Number                When                       Length
NAME NOT FOUND     512-172-4226     Tue, Jul 26, 2016     0:00