Issuer Identification Number (IIN)
What is the ISO/IEC 7812 Numbering System?
The purpose of the numbering system is to uniquely identify a card issuing institution in an international interchange or closed environment. There are two types of IINs:
- International Interchange - All interchange IINs are six digit numbers and each card issuer is entitled to one IIN (outside of its membership of any card schemes, for example an IIN assigned from Visa).
Therefore only one IIN will be assigned to each card issuer.
This IIN must be used only to identify the card issuer and is used when information is exchanged between the acquirer and the issuer for clearing and settlement. Additional IINs will not be issued to identify products, services or geographical location.
- Closed Environment - All closed environment IINs are nine digit numbers and can be used for national use ONLY. Closed environment IINs are used when the issuer acquires its own transactions and its network does not accept, allow, or process any card program other than its own.
How can I obtain copies of ISO/IEC 7812 Parts 1 & 2?
Copies of ISO/IEC 7812 are available electronically from the ANSI Webstore at the following: webstore.ansi.org.
How can I obtain the application form?
Application forms are available upon request from ANSI’s Registration Coordinator. The application can also be downloaded at the link below:
How do I complete the application form?
The applicant must complete B.1 of the form as clearly as possible. Parts B.2 and B.3 are to be left blank by the applicant. Specific sections of the form that may require careful consideration by the applicant are:
In this section B.1 of the application form, applicants should choose the
industry that is closest to the core business of the card issuer. They should
not choose a category that matches the intended use of the card. If the
business of the card issuer is not listed, then applicants should state clearly
what their core business is. The industry chosen by the card issuer will decide
the Major Industry Identifier (MII), the first digit of the IIN. The MII does
not in any way restrict or limit how the card can be used.
Brief description of card usage:
Applicants should state the intended use/service that the card will perform (debit card, credit card, ATM card, etc.).
What do I do if I’m a telecommunications company applying for an IIN?
If you are a Telecommunications Company, please contact ITU directly for an application and directions on procedures for obtaining an IIN.
Telecommunication companies are not eligible to receive an IIN assigned under ISO/IEC 7812.
International Telecommunication Union
Place des Nations
1211 Geneva 20
Tel : +41 22 730 5211, Fax: +41 22 730 585
Is there an application fee?
There is a non-refundable, $1500 application fee associated with processing this application.
The fee should accompany the application. ANSI accepts the following as payment: check, money order,
American Express, MasterCard & Visa. For applicants wishing to pay by credit card, please download the credit card information and fax the completed form to 212.642.4888.
Complete applications can be sent to the sponsoring authority, ANSI, at the following address:
IIN Registration Coordinator
American National Standards Institute
25 West 43 Street
New York, NY 10036
Applications can be also faxed to the following: 212.642.4888.
Note: Applications cannot be processed without the accompanying fee. If the
application is faxed and the organization wishes to pay by check, the
Registration Coordinator will hold the application until such fee is received.
What is the turnaround time for IIN assignment?
Once the completed application and application fee are received by ANSI, the
turnaround time is typically within 5 business days.
More information on the Closed Enviornment IINs
The U.S. has developed the U.S. National Numbering System and ANSI is the
Registration Authority for this numbering system. This numbering system is
similar to the numbering system for ISO/IEC 7812 Parts 1 & 2.
The structure of this identification number is as follows:
|Issuer Identification Number
||Individual Account Identification
||U.S. Country Code
||(variable up to 9 digits)
Therefore organizations requesting a national IIN will receive an IIN in the following format:
9 840 XXXXX with XXXXX being assigned by ANSI.
As mentioned above, organizations requesting a National IIN should select "No" in Part A for the question asking, “Will this IIN be used for interchange (transaction data is exchanged between two or more entities)?” and also “No” in Part A for
the question asking, “will accounts used from this IIN be used internationally?”
What if I would like to apply to be an IIN Blockholder?
A Blockholder is defined as an entity that owns 2 or more IINs. If you are located outside the United States, you will need to first obtain approval from your country’s Standards Body to become a Blockholder.
If you are located within the United States, you will need to fill out an IIN Blockholder application and submit it to ANSI.
The application fee for U.S. and international entities to apply for an IIN block is $2000.
Please remember that this is a non-refundable application fee. If your request is approved, you will also be charged a fee from the ISO/IEC 7812 Registration Authority for each number you obtain.
What if I want to verify an existing IIN or would like a complete listing of assigned IINs?
The ISO/IEC 7812 Registration Authority (the American Bankers Association)
produces the official record of IIN assignments, the ISO Register of Card Issuer Identification Numbers.
To obtain a copy of this document* please
American Bankers Association
*Qualifications must be met before
receipt of document.
What if I have other questions not answered above?
Contact ANSI’s Registration Coordinator at IINregistration@ansi.org