Africa · DX entity · DXCC 219

Sao Tome and Principe

Sao Tome and Principe is a DX entity in Africa, in CQ zone 36 and ITU zone 47. Its primary prefix is S9.

Flag of Sao Tome and Principe.

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Figure 1. Sao Tome and Principe and its first-level subdivisions. 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 0.002253 degrees, about 251 m; exported 30 October 2026. Projection: Lambert azimuthal equal-area centred on 0.9° N 7° E.

Data sheet

DXCC entity code	219
Name in the ADIF standard	SAO TOME & PRINCIPE
Continent	Africa
Primary prefix	S9
CQ zone	36
ITU zone	47

Prefixes

S9 is the primary prefix. The country files list 1 prefix for Sao Tome and Principe.

Show all prefixes

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.