Area Code 320 – Mobile Network
The phone area code for Mobile Network is 320 (international format +57320). Browse local exchange codes (NXX) and carrier assignments below.
The Colombian mobile prefix 320 is a non-geographic number range assigned to mobile network operators (MNOs) and mobile virtual network operators (MVNOs) operating within Colombia's national numbering plan. Unlike geographic area codes that correspond to specific cities or departments, the 320 prefix does not indicate the caller's or subscriber's physical location. Instead, it is part of the country's mobile allocation under the +57 country calling code, managed by the Comisión de Regulación de Comunicaciones (CRC).
Technical Format and Dialing
Colombian mobile numbers using the 320 prefix have a total length of 10 digits when dialed nationally, including the prefix. The international format is +57 320 XXX XXXX, where the leading '0' is omitted when dialing from abroad. For example, a Bogotá-based mobile subscriber might have the number +57 320 123 4567. When calling from a landline or another mobile within Colombia, users dial the full 10-digit number: 320 123 4567. No trunk prefix (like '0') is required for domestic calls, as the 10-digit number is dialed directly.
Number Portability and Routing
Colombia implemented mobile number portability (MNP), allowing subscribers to retain their 320 numbers when switching between MNOs or MVNOs. Consequently, the prefix does not permanently identify the current service provider. Routing of calls and SMS to 320 numbers is handled through the national signaling network, with queries to the central reference database to determine the current network. This ensures that calls are correctly terminated regardless of the original allocation.
Usage and Services
The 320 range is used for voice, SMS, and mobile data services, supporting both prepaid and postpaid plans. It is also used for machine-to-machine (M2M) communications and IoT applications, as the CRC has designated certain sub-ranges for such services. The prefix is not restricted to any geographic region, making it suitable for nationwide mobile services.
Caller Guidance
For local callers within Colombia, dial the 10-digit mobile number directly. For international callers, dial the international access code (e.g., 00 or +), followed by Colombia's country code 57, and then the 10-digit mobile number, omitting any leading '0'. For example, a caller from the United States would dial 011 57 320 123 4567 or +57 320 123 4567 from a mobile phone. It is important to note that calls to 320 numbers are charged according to the caller's plan, and international rates apply when calling from abroad.