Albania
10 characters, the first position following the prefix is 'J' or 'K' or 'L',
and the last character is a letter – e.g. K99999999L or L99999999G
Australia
11 digit number
Austria
AT
AT + 8 digits, e.g. ATU99999999
Belarus
9 digit number (ex. УНП 190190190)
Belgium
BE
BE + 10 digits, e.g. BE0999999999
Brazil
11 digits, e.g. 123.456.789-00
Bulgaria
BG
BG + 9–10 digits, e.g. BG999999999
Chile
8 digits, one dash, 1 check digit (0-9, K)
Croatia
HR
HR + 11 digits, e.g. HR12345678901
Cyprus
CY
CY + 9 characters, e.g. CY99999999L
Czech Republic
CZ
CZ +8-10 digits
Denmark
DK
DK + 8 digits, e.g. DK99999999
Dominican Republic
Legal People: 11 digits without hyphen.<br>Companies: 9 digits without hyphen.
El Salvador
4 digits-DOB-3 digits-1 digit (like 0614-241287-102-5)
Finland
FI
FI + 8 digits, e.g. FI99999999
France
FR
FR + 2 digits + 9 digits, e.g. FRXX999999999
Germany
DE
DE + 9 digits, e.g. DE999999999
Greece
EL and GR
EL + 9 digits
Guatemala
seven digits, one dash (-); one digit (like 1234567-1)
Hungary
HU
HU + 8 digits, e.g. HU12345678
India
11 digit number followed by V, to indicate VAT TIN (or by C to indicate CST TIN)
Indonesia
15 digit number (ex. 02.271.824.1-413.000)
Ireland
IE
IE + 7 digits and 2 letters, e.g. IE1234567FA
Israel
9 digit number. If the number of digits is less than 9, then zeros should be padded to the left side.
The leftmost digit is 5 for corporations. Other leftmost digits are used for individuals
Lithuania
LT
LT + 9 or 12 digits
Luxembourg
LU
LU + 8 digits
Mexico
Natural: 4 digits, 6 numbers (YYMMDD), 3 digits (like AAGB860519G31)<br>Companies:
3 digits, 6 numbers (YYMMDD), 3 digits (like P&G851223B24)
Netherlands
NL
NL + 9 digits + B + 2-digit company index – e.g. NL999999999B99
New Zealand
13 digit number
Nicaragua
3 digits, 1 dash, 6 digits, 1 dash, 4 digits followed by 1 letter
Norway
9 digits and the letters 'MVA' to indicate VAT registration
Paraguay
6 digits, 1 dash, 1 check sum digit
Philippines
12 digit number
Portugal
PT
PT + 9 digits
Russia
10 digits (companies) or 12 digits (people)
Serbia
9 digits (ex. 129456789)
Slovakia
SK
SK + 10 digits
Slovenia
SI
SI + 8 digits, e.g. SI99999999
Spain
ES
ES + letter + 8 digits, e.g. ES99999999
Sweden
SE
SE + 12 digits, e.g. SE999999999901
United Kingdom and Isle of Man
GB
GB + 9 digits
Uzbekistan
9 digits<br>Companies: 20000000Х-29999999Х<br>People: 40000000Х-79999999Х
Venezuela
First digit must be (J, G, V, E), one dash (-), next 9 (nine) numbers like J-305959918,
in some cases can be written like J-30595991-8