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Dial: Invalid From number (caller ID)



ERROR: 13247

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PROGRAMMABLE VOICE
ERROR

You attempted to initiate an outbound phone call or message, but the 'From' parameter you supplied was not a valid phone number or alphanumeric sender ID.

Twilio accepts phone numbers in E.164 format(link takes you to an external page) (i.e. "+1 format"), 10-digit US and Canadian numbers with any combination of non-digit separators, or Alphanumeric Sender IDs (SMS only) with up to 11 alphanumeric characters [a-zA-Z0-9]. Refer to this page(link takes you to an external page) for acceptable characters.

The number must not be on a do-not-originate (DNO) list, and Alpha Sender IDs may not be generic.

Possible Causes

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  • You have supplied a phone number that was not in E.164 format(link takes you to an external page)
  • Your From phone number is on a do-not-originate (DNO) list

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