North America · DX entity · DXCC 289

United Nations Headquarters

United Nations Headquarters is a DX entity in North America, in CQ zone 5 and ITU zone 8. Its primary prefix is 4U1U.

Flag of United Nations Headquarters.

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

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

Data sheet

DXCC entity code	289
Name in the ADIF standard	UNITED NATIONS HQ
Continent	North America
Primary prefix	4U1U
CQ zone	5
ITU zone	8

Prefixes

4U1U is the primary prefix. The country files list 1 prefix for United Nations Headquarters.

Show all prefixes

4U1U

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.