The NALENND Basic NPA NXX Validation API allows users to validate a North American telephone area code and exchange NPA NXX combination. This API can also identify the exchange's service area, local access and transport area (LATA), operating company number (OCN), COMMON LANGUAGE Location Identifier Code (CLLI code), and carrier-defined line type.
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.