Call San Diego from Italy

To make an international call to San Diego, CA from Italy, please follow the dialing steps shown below.

Because US phone numbers are highly standardized, dialing US phone numbers is easy - and the same international dialing procedure applies whether you are calling San Diego from Rome, Naples, Milan, Genoa, Venice, or any other Italy location.

When dialing San Diego from Italy, it makes no difference whether you are calling from a Italy landline or mobile phone - the dialing procedure is the same (although you should double check with your carrier to confirm that your plan allows international calls and that no special charges apply).

As well, when dialing, it also doesn't matter if you are calling to a San Diego landline phone or a San Diego mobile phone - both have the same format and the procedure is the same.

However, please note that for some calling cards, prepaid plans, and other service plans, extra charges may apply when calling to mobile phones in United States. Please check with your provider for details.

For further information:

Phone Number Formats to Call San Diego from Italy

In the United States, phone number formats are highly standardized with no variation across the country. As well, landline and mobile phone numbers are formatted exactly the same. It is not possible to tell, simply by looking at a US phone number, whether it is a mobile or landline number - and it doesn't matter for dialing purposes.

All US phone numbers are 10-digits long and include a 3-digit area code and 7-digit local subscriber number. Increasingly, the same region may have multiple area codes. Local subscriber numbers are unique within an area code. Please check here for more information on San Diego area codes.

US phone numbers may be written to include a leading ' 1 '. This ' 1 ' can serve as either the US country code for inbound international calls or as a national direct code for national long distance dialing in the US.

If the San Diego phone number you have does not contain the full 10-digit phone number, then you'll need to double check to find the correct number.

To make an international phone call to San Diego from Italy, you need to dial a phone number formatted as follows:

Call San Diego Landline Phone from Italy

00  1   aaa  nnn nnnn
international
access code		 country
code		 3-digit
area code		 7-digit
landline number

Call San Diego Mobile Phone from Italy

00  1   aaa  nnn nnnn
international
access code		 country
code		 3-digit
area code		 7-digit
mobile number

Click here for more on San Diego landline vs. mobile phone numbers.

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Dialing Steps to Call San Diego from Italy

To call a San Diego landline or mobile phone number from Italy, follow this dialing procedure.

1. Dial Italy int'l access code / IDD:  00

Note that some mobile operators may not require you to dial an IDD and/or may allow use of substitute characters (such as '+') in lieu of an IDD.

2. Dial US country code: + 1 

If your San Diego destination phone number starts with a ' 1 ' - e.g., 1 619 454 8180, then this serves as the country code. Don't dial ' 1 ' twice.

3. Dial a 10-digit San Diego phone number

To reach a San Diego landline number or a San Diego mobile phone, dial a 10-digit number as follows:

a. Dial a 3-digit San Diego area code:  aaa 

b. Dial a 7-digit local subscriber number: nnn nnnn

Some common San Diego area codes are: 619 , 858 , and 760 . List of San Diego area codes

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