Europe · DX entity · DXCC 117

ITU Headquarters

ITU Headquarters is a DX entity in Europe, in CQ zone 14 and ITU zone 28. Its primary prefix is 4U1I.

Flag of the United Nations.

The map of this entity arrives with the DXEntity boundary layer.

Figure 1. ITU Headquarters. The boundary is to come. Boundaries: not yet published (GIS-Architecture, the DXEntity layer).

Data sheet

DXCC entity code	117
Name in the ADIF standard	ITU HQ
Continent	Europe
Primary prefix	4U1I
CQ zone	14
ITU zone	28

Prefixes

4U1I is the primary prefix. The country files list 1 prefix for ITU Headquarters.

Show all prefixes

4U1I

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.