Area Code 302 – Mobile Network

Overview of Colombia's Mobile Prefix 302

In Colombia, the national numbering plan follows the ITU-T E.164 recommendation, with country code +57. Mobile numbers are non-geographic, meaning they are not tied to a specific city or region. The prefix 302 is one of the mobile prefixes assigned within the +57 country code. It is used by mobile network operators (MNOs) and mobile virtual network operators (MVNOs) to deliver cellular services across the entire country. Unlike geographic area codes, 302 does not indicate a physical location; it simply identifies the number as part of the mobile network.

Formatting and Dialing Procedures

Colombian mobile numbers, including those starting with 302, have a total length of 10 digits when dialed nationally. The structure is: the prefix (302) followed by a 7-digit subscriber number. For example, a typical mobile number would be 302 123 4567. When dialing from within Colombia, you must include the prefix and the subscriber number, without any leading trunk prefix (Colombia uses '0' for domestic long-distance, but for mobile-to-mobile calls, it is not required). For international callers, the format is: +57 302 123 4567. The plus sign represents the international access code, which varies by country (e.g., 00 from many countries, or 011 from the US and Canada).

Number Portability and Routing

Colombia implemented mobile number portability (MNP), allowing subscribers to retain their mobile number when switching operators. Therefore, a number starting with 302 may not necessarily be associated with the original operator that was assigned that prefix block. When routing calls, the network uses the full number to determine the current operator, ensuring connectivity regardless of the original allocation. This means that the prefix 302 is not a reliable indicator of the current service provider, but it remains a valid mobile number for voice, SMS, and data services.

International SMS and Voice Routing

For international SMS and voice calls to a 302 number, the sender must use the international format: +57 followed by the 10-digit mobile number. SMS messages from abroad are routed based on the country code and the mobile number, and they are delivered to the subscriber's handset. Voice calls are similarly routed through international gateways. It is important to note that while roaming, the subscriber may incur additional charges, but the dialing format remains the same.

Regulatory and Cost Considerations

The Colombian Communications Regulatory Commission (CRC) oversees the numbering plan and ensures fair allocation of prefixes. Mobile numbers are allocated in blocks to licensed operators. The cost of calling a 302 number depends on the caller's operator and plan; typically, calls to mobile numbers are charged at a higher rate than fixed-line calls. However, many mobile plans include unlimited or bundled minutes to any Colombian mobile number, regardless of the prefix. For businesses, it is essential to verify the number's portability status to ensure accurate billing and routing.