Asia · DX entity · DXCC 506

Scarborough Reef

Scarborough Reef is a DX entity in Asia, in CQ zone 27 and ITU zone 50. Its primary prefix is BS7.

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Figure 1. Scarborough Reef. 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. At the full detail of the source; exported 30 October 2026. Projection: Lambert azimuthal equal-area centred on 15.2° N 117.8° E.

Data sheet

DXCC entity code	506
Name in the ADIF standard	SCARBOROUGH REEF
Continent	Asia
Primary prefix	BS7
CQ zone	27
ITU zone	50

Prefixes

BS7 is the primary prefix. The country files list 1 prefix for Scarborough Reef.

Show all prefixes

BS7

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