en.wikipedia.org/wiki/Telephone_numbers_in_the_Americas

All countries in the Americas use codes that start with "5" except for: Canada, the United States and some Caribbean countries under the North American ...

countrycode.org/usa

EASY TO REMEMBER URL: 'CountryCode.org/usa' for United States country code 1 country codes US and United States phone number.

ccm.net/faq/48001-how-to-call-the-united-states

If you are located within the United States and are ... by the applicable country code and 7 or 8-digit phone number.

www.howtocallabroad.com/usa

Complete resource on how to call the United States of America: country code, area codes and more international calling info.

www.tripadvisor.com/Travel-g191-s605/United-States:Telephones.html

Inside United States: Telephones - Before you visit United States, visit ... If you make a call from a phone with an area code which is different from the area code  ...

www.csgnetwork.com/usphoneareacodesbyac.html

Provided for your use by CSGNetwork.Com and Computer Support Group.

fakenumber.org

Were you to make up a random US phone number yourself, there is a high chance of your number ending up being valid. However, with Fake Number's free and ...

www.forbes.com/sites/josephsteinberg/2014/02/01/dont-return-calls-from-these-area-codes-its-a-scam

Feb 1, 2014 ... ... forms every few years is once again spreading throughout the United States. Don't be a victim! Criminals target people simply by calling them ...

tollfreeforwarding.com/virtual-phone-number/usa

Activate USA Phone Numbers today to boost your brand's global presence and ... A TollFreeForwarding.com number in the United States can help you make the ...