Area code 021
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021 is:
- in Indonesia, the area code for the city of Jakarta.
- in Iran, the telephone area code for the city of Tehran. This code became popularized by Tehrani rapper Hich Kas.
- in South Africa, the area code for the city of Cape Town.
- in Ireland, the area code for the city of Cork and a surrounding part of County Cork.
- in the United Kingdom, the former area code for Birmingham England (changed to 0121 on 16 April 1995).
- in New Zealand, the "area code" for cellular phones on the Vodafone network.
- in Pakistan, the area code for the city of Karachi.