Telephone numbers in Indonesia have different systems for land lines and mobile phones: land lines use area codes, while mobile phones do not. For land line area codes, the digit "0" is added in front when dialing domestic long distance from within Indonesia, but is always omitted when calling from abroad. Instead, callers would use the Indonesian country code +62, followed by the area code, without the "0". Domestic phone numbers in large cities have 8 digits, and in other areas 7 digits. Mobile phone numbers have a total of 10 or 11 digits for postpaid depending on the operator, whereas prepaid services get 11 to 13 digits determined by the operator.