Area Code 300 – Mobile Network
The phone area code for Mobile Network is 300 (international format +57300). Browse local exchange codes (NXX) and carrier assignments below.
Overview of Colombia's Mobile Prefix 300
In Colombia, the national numbering plan follows the ITU-T E.164 standard, with country code +57. Mobile numbers are non-geographic and are identified by a three-digit prefix that follows the country code. The prefix 300 is allocated to COMUNICACIÓN CELULAR S.A. (COMCEL S.A.), operating under the brand Claro. This prefix is used exclusively for mobile services, including voice, SMS, and data, and is not tied to any specific geographic region within Colombia.
Numbering Format and Dialing Procedures
Colombian mobile numbers consist of the country code +57, followed by a three-digit mobile prefix (e.g., 300) and a seven-digit subscriber number, totaling 10 digits when dialed internationally. The national format is 300 XXX XXXX, and the international format is +57 300 XXX XXXX.
For local callers within Colombia, mobile numbers are dialed as 300 XXX XXXX without the country code. For international callers, the format is +57 300 XXX XXXX (or the international access code of the originating country, e.g., 011 from the US/Canada, followed by 57 300 XXX XXXX).
Regulatory and Technical Considerations
Colombia's telecommunications regulator, the Comisión de Regulación de Comunicaciones (CRC), oversees the assignment and management of numbering resources. Mobile number portability (MNP) is fully implemented in Colombia, meaning that a subscriber can retain their 300 number when switching to another mobile operator. Therefore, a 300 prefix does not guarantee that the subscriber is currently using Claro's network; it only indicates the original allocation.
For SMS and voice services, international routing to 300 numbers is handled through standard interconnection agreements. Calls from abroad to Colombian mobile numbers are typically charged at international rates, while the called party may incur airtime charges depending on their plan. It is important to note that 300 numbers are not reachable via geographic landline dialing patterns; they require the full mobile number format.
Usage and Availability
Claro is one of the largest mobile network operators in Colombia, and 300 numbers are widely used across the country. These numbers support all modern mobile services, including 4G LTE and 5G, and are compatible with VoIP and OTT applications. When contacting a Colombian mobile user, always verify the complete 10-digit number to avoid misdialing.