This is the merchant's choice and is determined by the merchant's location. Clickatell supports both long numbers and short codes for SMS. Merchants also have the option to apply for new numbers or use their existing numbers for this service. Please note, however, that different geographies have restrictions on the availability of long numbers and short codes.
Details about geographical support for long numbers and short codes can be found here.
SMS and two-way channels, automation, call center integration, payments – do it all with Clickatell’s Chat Commerce platform.