Code Value Notes
Alpha-2 AO Alpha-2 code from ISO 3166-1
Alpha-3 AGO Alpha-3 code from ISO 3166-1
Numeric 024 Numeric code from ISO 3166-1
ITU AGL Codes assigned by the International Telecommunications Union
FIPS AO Codes from the U.S. standard FIPS PUB 10-4
IOC ANG Codes assigned by the International Olympics Committee
FIFA ANG Codes assigned by the Fédération Internationale de Football Association
DS   Distinguishing signs of vehicles in international traffic
WMO AN Country abbreviations used in weather reports from the World Meteorological Organization
GAUL 8 Global Administrative Unit Layers from the Food and Agriculture Organization
MARC ao MAchine-Readable Cataloging codes from the Library of Congress
DIAL 244 Country code from ITU-T recommendation E.164 (international dialing code)
TLD .ao Country code Top Level Domain