I get it, not everyone has multiple numbers. You may be a little unsure of which number you should call. I will address the best option for you. International callers, you would need to contact your carrier to decide the best number for you to call with regards to my International Numbers.
US Callers
This is simple, you are best to call my [Cellular] Number. Every carrier I know of treats a US phone number as if it was a local call. Therefore, calling Pennsylvania from California will cost the same as calling next door. While you could call the [NANP] Number, I will likely ask to call you back if I know you are calling from within the US. This is because calls from within the continental US is 3¢ per minute, and that is a waste of money when you’re not saving resources on your end.
One exception will be Alaskan callers. If you suspect that your phone service provider will charge you for calling outside of Alaska, you can call my dedicated Alaskan telephone number. This will allow you to reach me in Pennsylvania by dialing the Alaskan number. It is free to you, and 3¢ per minute for me. In which case, if I notice you are calling from Alaska, I might ask to call you back.
NANP Callers
If you live in America Samoa, Canada, Guam, Northern Mariana Islands, Puerto Rico, or the US Virgin Islands, you would want to call my NANP number. This is because my NANP (toll-free) number is supported by these countries/territories. If you live within the NANP, but not in these locations, you would want to check with your phone provider to find out what is the best country to call to. Since calling my NANP number is toll-free, you don’t have to worry about the cost of calling me. My NANP number also has the 4th-10th digit as the same as my [Cellular] Number, therefore making it easy for you.
International Callers
If you live outside of the NANP locations I mentioned, then you would need to contact your carrier to decide which of my [International] Numbers vs. my [Cellular] Number to call. Whichever number is the best should be the one that you would want to call. Keep in mind, I will not reimburse you for calls you make to me just as I wouldn’t expect you to reimburse me for calls I make to you. The reason I am not recommending my [NANP] number for international calls is some countries may not allow for such, and even if they did – we both will be paying for the call you make.