United Nations
The United Nations (UN) is named in the SETI post-detection-protocols as the body through which the international consultation required before any reply to an extraterrestrial intelligence must occur — the “No Reply” principle. Under the protocols, transmitting a response to an ETI is a decision belonging to all of humanity and should not be made unilaterally by any individual, institution, or state.
The 2026 revision of the protocols additionally calls for the Declaration to be lodged with the United Nations among other stakeholders (src-seti-detection-protocols-revision-2026-06). The UN’s existing space-governance framework is anchored by the outer-space-treaty.