How to call Mauritania from the USA/Canada:

dial 011 + 222 + phone number

Calling from another country?

The time in Mauritania is now 01:45:17pm

Calling Mauritania from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
222 - Country Code for Mauritania
Phone Number - 8 digits, landlines can start with 25, 35 and 45 (example: 25?? ????); all other numbers are cellular phones
US to Mauritania international dialing format: 011 222 ???? ????

Phone Books:

Yellow Pages of Africa - business directory for Mauritania

Updates:

Mauritania telephone numbering changes - January 2011