United States ham radio callsigns
aid: callook-info name: Callook.info description: "United States ham radio callsigns" url: https://callook.info specificationVersion: '0.20' created: '2026-05-28' modified: '2026-05-28' x-source: public-apis/public-apis x-category: "Open Data" x-tier: 3 x-tier-reason: bulk-registered-from-public-apis tags: - Open Data - Public APIs apis: - name: Callook.info description: "United States ham radio callsigns" humanURL: https://callook.info baseURL: https://callook.info tags: - Open Data properties: - type: Documentation url: https://callook.info common: - type: Website url: https://callook.info - type: PublicAPIsListing url: https://github.com/public-apis/public-apis maintainers: - FN: Kin Lane email: [email protected]