The list of international codes that can be tracked from mainland France and overseas territories is as follows:

Export code from France :

CC, followed by 9 digits followed by country code FR
CD, followed by 9 digits followed by country code FR
CE, followed by 9 digits followed by country code FR
CH, followed by 9 digits followed by country code FR
CJ, followed by 9 digits followed by country code FR
CK, followed by 9 digits followed by country code FR
CW, followed by 9 digits followed by country code FR
CX, followed by 9 digits followed by country code FR
CY, followed by 9 digits followed by country code FR
CZ, followed by 9 digits followed by country code FR
EY, followed by 9 digits followed by country code FR

The list of international codes that can be tracked, for metropolitan France and overseas territories, is as follows:

All codes with the following format: C, followed by a character between A and Z, followed by 9 digits followed by the 2-character iso country code for all countries except the following:

Belgium (only) :
CC, followed by 9 digits followed by country code BE
CD, followed by 9 digits followed by country code BE
CE, followed by 9 digits followed by country code BE From Belgium

Switzerland:
C, followed by a character from A to Z (excluding C and E), followed by 9 digits, followed by the country code CH

Czech Republic :
C, followed by a character from A to Z (excluding C and E), followed by 9 digits, followed by the country code CZ

Germany :
C, followed by a character between A and Z, followed by 9 digits followed by the country code DE (12 digits)

Denmark (only) :
CC, followed by 9 digits followed by country code DK
CE, followed by 9 digits followed by country code DK
CO, followed by 9 digits followed by country code DK

Spain:
C, followed by a character from A to Z (excluding C, F, E and P), followed by 9 digits, followed by the country code ES

Finland :
C, followed by a character from A to Z (excluding C, E and P), followed by 9 digits, followed by the country code FI.

Great Britain (only) :
CP, followed by 9 digits followed by country code GB
EE, followed by 9 digits followed by country code GB
EK, followed by 9 digits followed by country code GB
CK, followed by 9 digits followed by country code GB
CC, followed by 9 digits followed by country code GB

Greece :
C, followed by a character from A to Z (excluding C and E), followed by 9 digits, followed by the country code GR.

Hungary :
C, followed by a character from A to Z (excluding C and P), followed by 9 digits, followed by the HU country code.

Ireland :
C, followed by a character between S and Z, followed by 9 digits followed by the country code IE

Iceland :
C, followed by a character from A to Z (excluding C), followed by 9 digits, followed by the country code IS.

Italy :
C, followed by a character from A to Z (excluding C), followed by 9 digits, followed by the country code IT.

Lithuania :
C, followed by a character from A to Z (excluding C and E), followed by 9 digits, followed by the country code LT.

Luxembourg :
C, followed by a character from A to Z (excluding C and P), followed by 9 digits, followed by the country code LU.

Netherlands :
3S, followed by 11 digits
C, followed by a character from A to Z (excluding C and P), followed by 9 digits, followed by the country code NL.

Norway :
C, followed by a character between Q and Z (excluding S), followed by 9 digits followed by the country code NO

Portugal :
C, followed by a character from A to Z (excluding C and E), followed by 9 digits, followed by the country code PT.

Sweden :
C, followed by a character from A to Z (excluding C), followed by 9 digits, followed by the country code SE.

Slovenia (only) :
CB, followed by 9 digits followed by the country code SI
CK, followed by 9 digits followed by the country code SI
CN, followed by 9 digits followed by SI country code
CQ, followed by 9 digits followed by SI country code
CS, followed by 9 digits followed by SI country code
C, followed by a character between V and Z, followed by 9 digits followed by the SI country code.

Slovakia :
C, followed by a character from A to Z (excluding C, E, S, V), followed by 9 digits, followed by the country code SK.

United States:
C, followed by a character between A and X, followed by 9 digits followed by the country code US

Estonia :
C, followed by a character from A to Z (excluding C), followed by 9 digits, followed by the country code EE