What error will be received if a number is blocked for short code traffic?


If a number is blocked from receiving short code traffic, what error will be received?

Applies To

  • Error Code 6
  • Spam
  • Short Codes


Some operators in US block the reception of SMS from short codes on pre-paid numbers to prevent the receiving number from incurring premium charges. The error that will be received when messages are blocked due to this limitation is error code 6 (Anti-Spam Rejection/Content Blocking).

The end user would need to contact the Carrier to specifically request the blocking to be lifted for the number.

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