ISO 3166-1 alpha-3

ISO 3166-1 alpha-3 is used in ISO/IEC 7501-1 for machine-readable passports.

For current codes see: 3166-1

Reserved Code Elements list

The following alpha-3 codes are subject to a transitional reservation:

BUR - Burma, now Myanmar
BYS - Byelorussian SSR, now Belarus
CSK - Czechoslovakia, now Czech Republic and Slovakia
NTZ - Saudi-Iraqi neutral zone
ZAR - Zaire

The following three letter codes are subject to an indeterminate reservation, having been notified to the United Nations Secretary-General under the 1949 and/or 1968 Road Transport Conventions:

ADN - Aden
BDS - Barbados
BRU - Brunei
CDN - Canada
EAK - Kenya
EAT - Tanganyika
EAU - Uganda
EAZ - Zanzibar
GBA - Alderney
GBG - Guernsey
GBJ - Jersey
GBM - Isle of Man
GBZ - Gibraltar
GCA - Guatemala
HKJ - Jordan
MAL - Malaysia
RCA - Central African Republic
RCB - People's Republic of Congo
RCH - Chile
RMM - Mali
RNR - Zambia
ROK - South Korea
ROU - Uruguay
RSR - Southern Rhodesia
RSM - San Marino
SLO - Slovenia
SME - Suriname
TMN - Turkmenistan
WAG - Gambia
WAL - Sierra Leone
ZRE - Zaire

The following alpha-3 code elements are subject to an exceptional reservation:

ASC - Ascension Island - reserved for UPU, also used by ITU
CPT - Clipperton Island - reserved for ITU
DGA - Diego Garcia - reserved for ITU
FXX - Metropolitan France - reserved on behalf of France
GGY - Guernsey - reserved for UPU
IMN - Isle of Man - reserved for UPU
JEY - Jersey - reserved for UPU
TAA - Tristan da Cunha - reserved for UPU

For the time being, ISO 3166 MA has agreed not to use the following codes, taken from ISO/IEC 7501-1 (Machine readable travel documents), as alpha-3 country codes:

GBD - British Dependent Territories Citizen
GBN - British National (Overseas)
GBO - British Overseas Citizen
GBP - British Protected Person
GBS - British Subject
UNO - United Nations Official
UNA - United Nations Specialized Agency Official
UNK - Kosovo resident, issued travel document by UNMIK