Telgorithm's Number Verification is a lookup API that automatically reviews the phone numbers on your text messaging outbounding list to ensure that they are legitimate and in-service at the time of sending. Any numbers that are not will be removed so you have a clean list.

The ability to do a Number Verification is essential for boosting your messaging ROI as the majority of providers will charge you for sent messages, regardless if they are actually able to be delivered. Removing any out-of-service or fake phone numbers will prevent this and will give you a more accurate view of your legitimate list size and deliverability.