What’s the difference between Long Codes and Short Codes?

Long Codes (LC) were designed to support P2P (Person to Person) messages – with a relatively low throughput of messages.

Short Codes (SC) were designed to support A2P (Application to Person) bulk, higher throughput messaging – this a preapproved route, which eliminates filtering.

Over time, demand for and use of messaging channels has changed. A2P messages are being sent on Long Codes, and some Short Code based campaigns support P2P like experiences with the application only hosting the consent and communication experience. The carriers have stepped in to get better control of the traffic on their networks in effort to increase security and deliverability.

Click here to learn more about how you can get access to a complete range of carefully-tested phone numbers, to use with all your communication services from Sinch. To see what numbers are available in the country you wish to send messages to, please check the Sinch Build Dashboard.  

If you would like to discuss the details of the numbers and what is available, please contact our online team via onlineteam@sinch.com and they will be happy to help.

Take a look at the Sinch SMS Product page to learn more about our SMS products, or click here to sign up to our self-service portal and get started today.