Area Code 317 – Mobile Network
The phone area code for Mobile Network is 317 (international format +57317). Browse local exchange codes (NXX) and carrier assignments below.
Overview of Colombia's Mobile Prefix 317
In Colombia's national numbering plan, the prefix 317 is a non-geographic mobile identifier assigned to mobile network operators (MNOs) and mobile virtual network operators (MVNOs). Unlike geographic area codes that correspond to specific cities or departments, 317 is location-independent, meaning it does not indicate the caller's or subscriber's physical location. This prefix is part of the country's 10-digit mobile numbering scheme, which always begins with the digit '3' followed by a two-digit network identifier (e.g., 300, 310, 317) and then a 7-digit subscriber number.
Dialing Format and Number Structure
Colombian mobile numbers using prefix 317 follow the international E.164 format: +57 317 XXX XXXX. The country code is +57, the national destination code (NDC) for mobile services is '317', and the subscriber number is seven digits long. When dialing domestically, callers must include the full 10-digit number (e.g., 317 123 4567) even for local calls, as there are no local area codes for mobile numbers. For international callers, the format is +57 317 123 4567 (or 0057 317 123 4567 from countries using the international prefix 00).
Network Allocation and Portability
The 317 prefix is currently allocated to Partners Telecom Colombia S.A.S., operating under the brand name Flash Mobile, an MVNO that provides services over the networks of established MNOs. However, due to mobile number portability (MNP), a number starting with 317 may have been ported to another operator. Therefore, the prefix does not guarantee the current service provider; it only indicates the original allocation. This is important for SMS and voice routing, as calls and messages are directed based on the number's current home network, not the original prefix.
Usage and Considerations
As with all Colombian mobile numbers, calls to 317 numbers are typically charged at mobile rates, which may vary depending on the caller's plan and whether the call is on-net or off-net. For businesses, 317 numbers are often used for customer engagement, but they are not toll-free; the caller may incur charges. When dialing from abroad, ensure you have the correct international exit code (e.g., 011 from the US, 00 from most European countries) followed by 57 and the full 10-digit number. For SMS, the same international format applies. Always verify the number's current operator if you need to contact customer service, as ported numbers may have different support channels.