Asia · DX entity · DXCC 339

Japan

Japan is a DX entity in Asia, in CQ zone 25 and ITU zone 45. Its primary prefix is JA.

Flag of Japan.

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Figure 1. Japan and its prefectures, with neighbouring land in grey. Hover for names; scroll to zoom. Boundaries: Natural Earth, Admin 0 Map Subunits and Admin 1 States and Provinces, 1:10m, version 5.1.2 (13 May 2022), public domain, retrieved 2026-10-15. https://www.naturalearthdata.com/. DX entity boundaries assembled by The DX Atlas Project from the sources named, one recipe row per DXCC entity (subunits matched, merged, split by box or carved from a parent; DXEntity-Recipe.md), 2026. Simplified for this page to 0.02238 degrees, about 2 km; exported 30 October 2026. Projection: Lambert azimuthal equal-area centred on 34.9° N 134.4° E.

Data sheet

DXCC entity code	339
Name in the ADIF standard	JAPAN
Continent	Asia
Primary prefix	JA
CQ zone	25
ITU zone	45

Prefixes

JA is the primary prefix. The country files list 26 prefixes and prefix blocks for Japan.

Show all prefixes

JA 7J 7K 7L 7M 7N 8J 8K 8L 8M 8N JE JF JG JH JI JJ JK JL JM JN JO JP JQ JR JS

Sources: Jim Reisert AD1C, Big CTY country files, 15 September 2026. https://www.country-files.com/ (MIT licence); ADIF Development Group, ADIF Specification version 3.1.8 (2026-10-12), DXCC Entity Code enumeration. https://adif.org/; ARRL, DXCC List (current and deleted entities), January 2026. https://www.arrl.org/country-lists-prefixes; Flag: Flagpedia.net (flagcdn.com), SVG, public domain, retrieved 2026-10-10.