How to Call Internationally From the USA

International Calling Format From the USA

The standard code to call international from USA landlines begins with 011, the United States international exit code. After that, enter the destination country code, the area or city code if required, and the local number.

The usual sequence is:

• US international exit code: 011
• Destination country code
• Area or city code, with any domestic trunk prefix removed when required
• Local subscriber number

Written as a template, the sequence is 011 + country code + area or city code + local number. Do not add spaces, parentheses, or dashes unless your device accepts them. Those marks help people read a number but are not part of the international dialing sequence.

The exact length varies by destination. Some places use area codes, while others organize numbers differently. Use the complete international version supplied by the person or organization you are calling.

How to Dial an International Number

If you need to know how to call international from USA right now, first confirm that the number is written in international format. Then follow the steps for your device.

From a mobile phone:

1. Open the phone dialer.
2. Enter a plus sign, or enter 011 if your mobile service requires the US exit code.
3. Enter the destination country code.
4. Enter the remaining number, omitting a leading domestic trunk prefix when the destination’s rules require it.
5. Review the full sequence, then tap the call button.

From a landline:

1. Make sure the line can place international calls.
2. Dial 011.
3. Dial the destination country code.
4. Dial the area or city code and local number in the required international format.
5. Wait for the call to connect. International routing may take longer than a domestic call.

A hotel, office, campus, or other shared phone system may require an internal step to reach an outside line. Check the instructions displayed near the phone or ask the system administrator. Do not assume that the procedure is the same as dialing from a private landline.

Using the Plus Sign Instead of an Exit Code

Many mobile phones let you use the plus sign in place of the international exit code. Press and hold the zero key in the dialer until the plus sign appears. Then enter the country code and the rest of the destination number.

The mobile format is + country code + area or city code + local number. Do not enter 011 after the plus sign because they serve the same purpose. Also do not add a second plus sign before the area code.

Using the plus sign can be helpful when saving an international contact because it identifies the number as international. Support can vary by device and service provider. If the plus format does not work, check your carrier’s official support information for its current international-dialing instructions.

Country Codes and Leading Zeros

Find the destination country code through an authoritative source, such as the destination country’s telecommunications regulator or your carrier’s official international-calling help page. Search that page by country name and verify the result before dialing. A country code is not the same as an area or city code.

Numbers written for domestic use sometimes begin with a trunk prefix. This is often a leading zero, but formats differ by country. The trunk prefix may need to be omitted when calling from abroad. For example, if a contact writes an area code with a zero in parentheses, the parentheses may indicate that the zero is used only for calls placed inside that country.

Do not remove a leading zero automatically. In some numbering systems it may be part of the actual number. Confirm the international format with the recipient or an official numbering guide for the destination.

If the International Call Does Not Connect

Start by checking the number from left to right. Make sure you used either 011 or the plus sign, followed by the correct country code and the complete destination number. Check for a duplicated country code, an extra domestic trunk prefix, missing digits, or copied punctuation.

If the format looks correct, try these checks:

• Confirm that international calling is allowed on your line or account.
• Check whether outgoing calls, call barring, parental controls, or workplace restrictions are enabled.
• Make sure the phone has cellular service or that the landline has a dial tone.
• Restart the device if its dialer or network connection appears stuck.
• Ask the recipient to confirm the number in international format and verify that the line can receive calls.

If the call still fails, contact your carrier through the support section of its official website or app. Look for a link labeled Contact Us, Support, or International Calling. Tell the representative the destination country, the format you entered, the device type, and any recorded message or error shown. Do not post the full destination number in a public support forum.

Before Placing the Call

Check the destination’s current local time and date, including any daylight-saving difference. Confirm whether you are calling a mobile number, landline, business extension, or another number type, since the required format may differ.

Have the number in verified international format before opening the dialer. If you are using a managed, shared, or restricted phone, confirm any outside-line or international-calling requirements with the person responsible for that system. Carrier procedures can differ, so consult your own carrier’s official instructions if its requirements are unclear.