042 area code — San Martín
In Peru, the area code 042 covers San Martín. Numbers are written internationally as +51 42.
How to call San Martín
- From abroad
- +51 42 XXX XXXX
- Within Peru
- 042 XXX XXXX
- Country calling code
- +51
About the 042 area code
When you see a number beginning +51 42, it belongs to San Martín: the 51 is Peru's country calling code and 42 is the area code.
Area codes like 042 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 Peru number. To actually receive an SMS on a Peru number, a temporary or virtual line does the job without exposing your own SIM.
Frequently asked questions
What area code is San Martín?
San Martín uses the area code 042, written internationally as +51 42.
How do I call San Martín from another country?
Dial your international access code, then +51 42, then the local number — dropping the national leading 0.
What time is it in San Martín?
San Martín is in the America/Lima time zone; the live clock above shows the current local time.
Is 042 a mobile or a landline code?
042 is a geographic (landline) area code for San Martín. Mobile numbers in Peru use their own separate prefixes.