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What does it mean when a number is invalid?
What does it mean when a number is invalid?

Understand why your SMS status is flagged as Invalid Number

Amy avatar
Written by Amy
Updated over a week ago

The recipient's number is invalid and cannot be recognised by our system for delivery.

This may be caused if:

Different countries have strict regulations on message sending; please see the Laws and Regulations knowledgebase category for more information.

If a certain number is on a country's 'Do not call list', your message will not send.

If you require a mobile number lookup, please create a ticket for our support team with details such as:

  • Your SMSGlobal username

  • A list of phone numbers you wish to look up (Excel or CSV format is preferred)

  • Countries that you're trying to send to

  • Sender ID that you're using for SMS

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