I've tested this repeatedly and I always get these harrassment calls the day after orbot is used or any app that re-routes my ip address on my smart phone. It's quite predictable. Numbers received so far: 458-201-1445, 458-201-1419, 541-257-1569, 262-298-8151, 505-982-8520, 979-320-9017, 804-843-6509, 303-489-4730, 918-275-8654, and others. Likely your tax dollars at work to harrass citizens and something Edward Snowden knows all about.
Called my phone...Oklahoma area code - I live in FL and don't know anybody in Oklahoma. I didn't pick up. They didn't leave a message, and they didn't call back.
WARNING--BEWARE!! These callers are B I G credit card criminals, known as the card service scammers! Under NO circumstances, give these lowlifes your credit card number, or you will regret it forever!