Twilio's API has this functionality. I've mostly used it to identify scammers using VOIP or phone numbers I don't recognize - it usually returns nothing but net

Twilio's API has this functionality. I've mostly used it to identify scammers using VOIP or phone numbers I don't recognize - it usually returns nothing but network info, but sometimes it'll return the account owner's name if it's a cellular (and landline maybe) https://www.twilio.com/docs/lookup https://www.twilio.com/docs/lookup