You should know the carrier or service provider of the number to send the text. Every service provider has a unique code and it is compulsory to make a call or send a text message. The phone number can be the same but service provider number will always be unique.
I Would Like To Text Someone Who Has A Track Phone And Don't Know Who The Server Is How Can I Text Them?
TracPhone is its own service provider. That is the brand name just like T-Mobile or Sprint. I don't know if TracPhone users have texting capabilities though. The user purchases prepaid minutes from a store and then applies them to the phone.