ISO/IEC 7812-1 defines issuer identification and the primary account-number structure used on payment cards. It supports card routing and data matching, and the shift from six-digit to eight-digit issuer identifiers, while application and allocation procedures belong to Part 2.
TL;DR:
- ISO/IEC 7812-1:2017 defines card-issuer numbering.
- It specifies the IIN and primary account number formats.
- Edition 5 remains published and was confirmed in 2022.
Summary
Issuer-numbering purpose
ISO/IEC 7812-1:2017 specifies a numbering system for identifying card issuers. The public abstract identifies the format of the issuer identification number and the primary account number as its subject.
Identifiers and roles
The IIN identifies the issuer within the numbering arrangement, while the PAN is the primary account number carried by a card credential. This numbering scope should be distinguished from rules for authorising or settling a card payment.
Related registration procedures
Part 1 defines numbering, while ISO/IEC 7812-2 addresses application and registration procedures for IINs. Allocating an identifier and defining its structure are related but separate standardisation functions.
Published status
ISO lists edition 5, published in January 2017 and confirmed in 2022. It remains published. Generic lifecycle diagrams showing possible withdrawal stages are not evidence of actual withdrawal. The catalogue abstract does not supply every detailed numbering requirement.
For IIN application and registration procedures, see ISO/IEC 7812-2:2017.
Keywords
- IIN
- PAN
- Issuer Identification
- Card Numbering
- Account Numbers
- Number Structure
- Identification Cards
- Registration
- Edition Control
- Payment Credentials