01 area code — Buenos Aires
In Argentina, the area code 01 covers Buenos Aires. Numbers are written internationally as +54 1.
* Argentina spans more than one time zone; the clock shows its primary zone.
How to call Buenos Aires
- From abroad
- +54 1 XXX XXXX
- Within Argentina
- 01 XXX XXXX
- Country calling code
- +54
About the 01 area code
When you see a number beginning +54 1, it belongs to Buenos Aires: the 54 is Argentina's country calling code and 1 is the area code.
Area codes like 01 tie a phone number to a place — useful for knowing where a call or message originates, and for signing up to services that expect a local Argentina number. To actually receive an SMS on a Argentina number, a temporary or virtual line does the job without exposing your own SIM.
Frequently asked questions
What area code is Buenos Aires?
Buenos Aires uses the area code 01, written internationally as +54 1.
How do I call Buenos Aires from another country?
Dial your international access code, then +54 1, then the local number — dropping the national leading 0.
What time is it in Buenos Aires?
Buenos Aires is in the America/Argentina/Buenos_Aires time zone; the live clock above shows the current local time.
Is 01 a mobile or a landline code?
01 is a geographic (landline) area code for Buenos Aires. Mobile numbers in Argentina use their own separate prefixes.