I have a service that verifies mobile numbers for sms on local GBP pages. I also see a lot of VOIP numbers. I usually disregard those numbers however I know many VOIP providers allow messaging. Does anyone know of a 3rd party verification service that checks VOIP numbers on a list for sms/mms capabilities?
I could ping them butI don't want to ruin my A2P or spam compliance with a bunch of error codes from bounced texts.