What is Carrier Documentation vetting?

Carrier Documentation is an alternate vetting method that allows the client to submit documented proof of their right to use a phone number. This documentation must be an invoice from their calling platform provider(s) dated within the past 30 days

Two Options:  

1. PREFERRED: Phone Bill(s) that include itemized list of SENTRY phone numbers 
2. Alternative: Phone Bill(s), without itemized list of SENTRY phone numbers, plus a standalone Excel file of phone numbers