How Are Toll-Free Numbers Assigned?
Toll-free numbers are assigned on a first-come, first-served basis by entities called "Responsible Organizations" or "RespOrgs." Many of these entities also provide toll-free service. RespOrgs have access to a toll-free database that contains information regarding the status of all toll-free numbers. RespOrgs are certified by Somos, Inc., administrator of the toll-free number database.