What is "resporg"

In the North American Numbering Plan, a RespOrg (a contraction for responsible organization) is a company which maintains the registration for individual toll-free telephone numbers in the distributed Service Management System/800 database. Their function in North American telephony is analogous to that of an individual registrar in the Internet's Domain Name System.

RespOrgs were established in 1993 as part of a Federal Communications Commission order instituting toll-free number portability. A RespOrg (pronounced as though it were a single word, something like "ressborg") can be a long distance company, reseller, end user or an independent that offers an outsourced service.