Registration information on SSTL-300 S1-004 (international designator 2018-071A) and change of status of Inmarsat 5F4 (international designator 2017-025A)
United Nations Office at Vienna
Vienna International Centre
Wagramerstrasse 5
A-1220 Vienna
AUSTRIA
Tel.: +43-1 26060-84950
Fax: +43-1-26060-5830