UCLA Dataverse
UCLA's research data repository, running open-source Dataverse on a UCLA-owned host under a UCLA-issued certificate with no vendor CNAME - which distinguishes it from the Figshare and Elsevier Pure tenancies that dominate this cohort. Recorded as a relationship rather than a contract because the host answers HTTP 200 with an Anubis bot challenge to every path including /api/info/version and /oai, so neither the Dataverse version, the DOI prefix nor OAI-PMH conformance could be confirmed, and none is claimed.