Real Phone Validation’s API allows users to identify disconnected and invalid numbers. The real-time API uses live telco data - pinging the phone switch - for up to the minute accuracy (no stale database look-ups). Allowing users to determine whether the numbers they are collecting are accurate and contactable. The service also identifies if the number is a landline or mobile, provides phone carrier, and callerID information.
The following is a list of how-to and tutorial content that matched your search term. ProgrammableWeb's how-to content comes from two sources; full-blown tutorials that we publish ourselves and other highly relevant tutorials that we find elsewhere on the Web. This list represents on combination of both tutorial types and if you go to ProgrammableWeb's API University, you'll not only be able to find more, they are organized based on your role (API providers or developers who consumes APIs). If you know of a tutorial that would be of interest to the ProgrammableWeb community, we'd like to know about it. Be sure to check our guidelines for making contributions to ProgrammableWeb.