International area codes 031
Country Code + CITY AREA CODE + NUMBER
Which country code is 031? The area code for city is 031.
Please look country code, the area code and 031 phone code.
Start with the international code which is 00,and then dial the city code and the number.
For example: 81-138-864-8972. Tip: Country code 81，area code 138，and the number is 864-8972.
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