When you send a commercial text message, it goes to a carrier that looks up which destination carrier a phone number belongs to, then the message is sent.
In order to get accurate carrier information, it needs to tap into the master database of all phone numbers in real-time to determine not only carrier id but also state, rate center location so that proper billing is assessed.
If you want to know which carrier a phone number belongs to or find out if the phone number is a landline or mobile number, a carrier lookup service can provide this information. Carrier lookup service provides the following information:
A typical cost for carrier lookup starts at around $0.005 per records. If you need to know if your landline is enabled for SMS (Messaging Enabled), it costs another $0.005 per record.
The most accurate result comes from tapping into real-time carrier lookup service. There is a cost associated with this service. If you need the inexpensive solution, find out from here www.SubscriberVerify.com.