How to call Vatican City from the USA or from Canada:

dial 011 + 39 (or 379) + phone number

Calling from another country?

The time in Vatican City is now 03:05:06pm

Calling Vatican City from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
39 - Country Code for Italy
379 - Country Code for Vatican City

Phone Books:

Pagine Bianche - White Pages
Pagine Gialle - Yellow Pages