GMS Registrar is a Federal Risk Authorization and Management Program (FedRAMP) accredited Third Party Assessment Organization (3PAO) providing security assessments for Cloud Service Providers.
This firm shows no currently active assessments in the Marketplace export. That's common for firms that are newly recognized or whose federal work isn't yet reflected in this dataset — it isn't necessarily a signal about capability.
Beyond FedRAMP, the Marketplace export lists this firm as offering assessment or certification services for: