International Amateur Radio Club

The International Amateur Radio Club "(IARC)" maintains and operates the amateur radio station 4U1ITU at the International Telecommunications Union building in Geneva, Switzerland. Intended to serve as a model of amateur radio operation, the station was created under the auspices of the Secretary-General of the United Nations and the Secretary-General of the International Telecommunications Union "(ITU)".
In many radio contests, amateur radio operators are allowed to consider the International Telecommunications Union station 4U1ITU a special entity and because of its significance to world telecommunications and it is given similar status to a separate country when making a radio contact. No other UN location is given this honor.
See also.
International Amateur Radio Union