Extend the maintenance term for an Infoblox NS1 Grid 33 Plus environment with an additional year of Level 3 coverage. RB-MAIN-1020-NS1GRID-33PLUS is an add-on maintenance service rather than a standalone appliance, subscription platform, or software installation. Its stated purpose is to add 1 year to an existing 3-plus-year Level 3 maintenance term associated with the supported NS1 Grid service. This service is suited to organizations maintaining a continuing NS1 Grid deployment and requiring the same Level 3 maintenance tier beyond the current covered period. The add-on structure matters: it is intended to extend qualifying coverage already in place, rather than establish an initial maintenance term. The service scope is tied to NS1 Grid 33 Plus, helping administrators keep the maintenance designation aligned with the covered platform. Select this maintenance add-on when the required outcome is a one-year extension of the existing Level 3 maintenance period for the specified NS1 Grid service. The product name distinguishes the covered platform, the Level 3 support tier, and the one-year add-on duration. It does not represent physical equipment, so it should be associated with the applicable existing service entitlement rather than deployed as hardware.