In June 2017, the Commission began a rulemaking to streamline, consolidate, and harmonize rules governing earth stations in motion (ESIMs) used to provide satellite-based services on ships, airplanes and vehicles communicating with geostationary-satellite orbit (GSO), fixed-satellite service (FSS) satellite systems. In September 2018, the Commission adopted rules governing communications of ESIMs with GSO satellites. These rules addressed communications in the conventional C-, Ku-, and Ka-bands, as well as portions of the extended Ku-band. At the same time, the Commission also released a Further Notice of Proposed Rulemaking that sought comment on allowing ESIMs to operate in all of the frequency bands in which earth stations at fixed locations operating in GSO FSS satellite networks can be blanket-licensed. Specifically, comment was sought on expanding the frequencies available for communications of ESIMs with GSO FSS satellites to include the following frequency bands: 10.7-10.95 GHz, 11.2-11.45 GHz, 17.8-18.3 GHz, 18.8-19.3 GHz, 19.3-19.4 GHz, 19.6-19.7 GHz (space-to-Earth); and 28.6-29.1 GHz (Earth-to-space).