If you are staying in a hotel, ask someone at the front desk about the cost of international calls.

As your call progresses, you may be prompted to insert more money or, if you are using a credit card, you may be warned about additional costs that are accruing.

Not all countries have the same exit code, but 00 applies in most of Europe and quite a few other countries as well. For example, if you were calling from the United States, Canada or any other country that participates in the North American Numbering Plan, the exit code would be 011 instead. [2] X Research source

The country code 1 also applies to any country in the North American Numbering Plan.

There are many online resources that will help you calculate possible area codes for each US ZIP code. US mobile phones may be assigned to any area code. Usually a mobile phone’s area code indicates the area in which service was first established. But an individual can keep the same cell phone number, including area code, when they relocate, so the cell phone’s area code doesn’t always match the geographical location of the user. If the 3-digit prefix is 800, 877, 866 or 888, this indicates that you’re calling a toll-free number. The phone receiving a toll-free call could be anywhere in the country, or the call could even be routed to a call center in another country.

Check the world times to ensure that whoever you are calling in the United States is available to take your call.

Many international calling cards sold in the US can only be used for international calls starting in the US.

This access number is typically located on the back of the calling card.

On many calling cards this number will need to be exposed by rubbing over an area on the back of the card with a coin.

The Skype app is available for iPhone, Windows 10 Mobile, and Android.

Wait to be connected to your number. It may take a few minutes for Skype to connect you to the number you are calling.