Area Code 301 – Mobile Network

Overview of Colombia's +57 301 Mobile Prefix

The +57 301 prefix in Colombia is a non-geographic mobile network code assigned to mobile services. It is not tied to any specific city or region, meaning that a number beginning with 301 can be registered anywhere in the country. This prefix is used by one of Colombia's major mobile network operators (MNOs) and is also available to mobile virtual network operators (MVNOs) through agreements. As with all Colombian mobile numbers, the full national significant number is 10 digits long, including the prefix, and must be dialed in full even for local calls.

Dialing Format and Usage

To call a Colombian mobile number with prefix 301 from abroad, you must dial the international access code (e.g., 00 or +), followed by Colombia's country code 57, and then the 10-digit mobile number. For example, a number like 301 234 5678 would be dialed as +57 301 234 5678 from outside Colombia. From within Colombia, you simply dial the 10-digit number: 301 234 5678. There is no trunk prefix like '0' used for domestic calls to mobile numbers.

Mobile Number Portability and Routing

Colombia implemented mobile number portability (MNP), allowing subscribers to keep their number when switching operators. Therefore, a number with the 301 prefix may no longer be associated with its original operator. When routing calls, the network uses a central database to determine the current operator of the number. This ensures that calls and SMS messages are delivered correctly regardless of the subscriber's current carrier.

International SMS and Voice Services

For international SMS delivery, the message should be addressed to +57 301 234 5678. Standard international SMS rates apply, and the recipient receives the message on their mobile device. Voice calls to 301 numbers are routed through international gateways and are subject to international calling rates. It is important to note that some services may have restrictions on international calls to mobile numbers, but generally, +57 301 numbers are accessible worldwide.

Regulatory and Technical Notes

The 301 prefix is part of Colombia's national numbering plan, administered by the Ministry of Information and Communication Technologies (MinTIC). The plan follows ITU-T E.164 recommendations, ensuring global interoperability. The prefix is considered non-geographic, meaning it is not tied to a specific geographic area code. This allows users to retain their number even if they move to a different region within Colombia. For businesses, using a 301 number can provide a nationwide presence without the need for multiple geographic lines.