Country Codes (phone) 

The Apparel Industry is an international industry.   Often, clothing companies need to contact apparel factories or clothing buyers in other countries.  If e-mail does not enough, it is good to use the phone...  When you are desperate, to make sure your garment manufacturer understands your instructions, you may want to pick up the phone and make your point as clear as possible.  Anyway, if your supplier did not give you their complete phone number, using the country codes may help you.
 
If you are searching for country codes for making a long distance phone call, we suggestion you try the following:

Country Codes - CountryCode.org is your complete guide to call anywhere in the world.

https://www.countrycallingcodes.com/

http://www.embassyworld.com/directories/global_telephone.html

Find Area Codes & business phone #'s in the United States (from AllAreaCodes.com).