UNMAS is based at the United Nations Headquarters in New York.
1 United Nations Plaza, New York, NY 10017
UNMAS also has an office in Geneva.
United Nations Mine Action Service (UNMAS) – Geneva Office
Palais des Nations, 8-14 Avenue de la Paix
Villa Bocage, Geneva, Switzerland
Tel: +41 22 917 1779
Email: unmasgeneva[at]un.org