CDCB Accepted International IDs

Currently accepted country codes

ARG Argentina SVK Slovakia
AUS Australia SVN Slovenia
AUT Austria SWE Sweden
BEL Belgium THA Thailand
BGR Bulgaria TUN Tunisia
BLR Belarus TUR Turkey
BRA Brazil TWN Taiwan Province of China
CAN Canada UKR Ukraine
CHE Switzerland URY Uruguay
CHL Chile USA United States of America
CHN China VNM Vietnam
COL Colombia YUG Yugoslavia
CRI Costa Rica ZAF South Africa
CYP Cyprus ZWE Zimbabwe
CZE Czech. Republic 124 Canada
DEU Germany 586 Pakistan
DNK Denmark 682 Saudi Arabia
DOM Dominican Republic 840 United States of America
ECU Ecuador 900 Shared
ESP Spain 942 ZTags
EST Estonia 949 Y-Tex
FIN Finland 953 Cromasa
FRA France 954 Reyflex
GBR Great Britain 964 Datamars
GRC Greece 969 Caisley
GTM Guatemala 971 DeLaval
HRV Croatia 977 Avid ID
HUN Hungary 982 Allflex
IDN Indonesia 984 Nedap
IND India 985 Destron Fearing
IRL Ireland 988 Temple
IRN Iran 991 WUXI FOFIA Tech
ISR Israel 999 AIPL assigned IDs
ITA Italy
JPN Japan
KAZ Kazakhstan
KEN Kenya
KOR South Korea
LTU Lithuania
LUX Luxembourg
LVA Latvia
MEX Mexico
NLD Netherlands
NOR Norway
NZL New Zealand
PER Peru
POL Poland
PRT Portugal
PRY Paraguay
ROU Romania
RUS Russia
SAU Saudi Arabia
SRB Serbia


  • Australian international ID is 19 characters long.
    • Breed (3 char) Note 1
    • Country (3 char) - See Currently accepted country codes
    • Sex (M/F) Note 2
    • ID (12 char). For Australian animals this ID is 3 Zeros + National ID
      • For most breeds, the National ID is: 'A' followed by a number right justified with leading zeros
      • For most young Holsteins bulls, National ID is: 'H' followed by a number (Herdbook) right justified with leading zeros
      • There are two possible sources of National ID for Holstein cows:
        • The number corresponds with HerdBook number (H00827147)
        • When the cow is registered on a Herd Recording System prior to registration with Holstein Friesian association the form is W99002705


The range of numbers for animals registered in Canada are as follows:
  • For animals registered prior to January 1, 1990
    • Male registration numbers ranged from 1 to 406,669
    • Female registration numbers ranged from 1 to 4,851,490
  • For animals registered after January 1, 1990
    • Male & female registration numbers started at 5,000,000
    • 5,000,000 to 9,999,999
    • 10,000,000 to 10,499,999 - reserved for CLRC (tattoos/RFID)
    • 10,500,000 to 99,999,999 - reserved for Holsteins (sketch/photo/RFID)
    • 100,000,000 to 104,499,999 - new series of numbers assigned to ATQi tags
    • 105,000,000 to 139,000,000 - not assigned to any HO animal (communication from HOCAN)
    • 140,000,000 to 299,999,999 - not reserved for any specific breed/company)


Registration standard in China ( is:
  • breed code (2 characters for different breed)
  • country code (CHN)
  • gender code (F, M)
  • 12 digit numeric ID:
    • for females: area code (2), farm code (4, decided by government including both digits and characters), birth year code (2, last 2 digits of the birth year), farm management code (4, according to farm decision). e.g. HOCHNF102010114027
    • for males: "0000" and a 8 digit code reflecting: bull station code (3, decided by national farm buro and published), birth year code (2, last 2 digits of the birth year) + bull station management code (3, according to bull station). e.g. HOCHNM000031115187


UK has adopted the international ID system:


1 Breed field in queries are accepted as 3 byte Breed code, as per international standards. However, please note that in CDCB formats, breed codes are required to have 2 bytes as indicated in Reference 4
2 Sex field in queries is accepted in the ID. However, please note that in CDCB formats, sex codes is a separate field and cannot be included in the ID.