9F57
Issuer Country Code (Visa)Issuer Country Code (Visa) is Visa's own proprietary duplicate of the same conceptual information the core Issuer Country Code (5F28, referenced alongside it, along with the terminal-side 9F1A) already carries - a VIS 1.5-defined tag that some Visa card configurations use in addition to, not instead of, the core tag a generic EMV parser already reads. This is the same kind of brand-specific duplication already seen with the Discover CRM Country/Currency Codes (D2/D3) in this dictionary: the underlying fact, which country issued this application, is the same, but Visa's own risk-management logic, defined outside core EMV Book 3, consults its own tag for it rather than relying solely on 5F28. A terminal or analysis tool that only decodes core tags will see 5F28 and consider the country-code question answered, without ever noticing that 9F57 is present and, in principle, could carry a different value if the two were ever out of sync on a given card - a discrepancy worth checking for specifically, not assuming away. Its source citation carries the export's verificar vigencia flag, pending confirmation against the acervo. See Visa ICC Specification (VIS) 1.5.
Interactive decoder
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Numeric (BCD): 0724
Country (ISO 3166): ES (Spain)
This tag is not a bitmap; the decoder shows a format-based interpretation.
Decoded example
Example value: 0724
Country (ISO 3166): ES (Spain)
Properties
| Tag | 9F57 |
|---|---|
| Name | Issuer Country Code (Visa) |
| Format | Numeric (BCD) |
| Length | 2 bytes |
| Source | Card (ICC) |
| Templates | 70, 77 |
| Books | Visa ICC Specification (VIS) 1.5 |
Frequently asked questions
- What is EMV tag 9F57?
- Issuer Country Code (Visa) is Visa's own proprietary duplicate of the same conceptual information the core Issuer Country Code (5F28, referenced alongside it, along with the terminal-side 9F1A) already carries - a VIS 1.5-defined tag that some Visa card configurations use in addition to, not instead of, the core tag a generic EMV parser already reads. This is the same kind of brand-specific duplication already seen with the Discover CRM Country/Currency Codes (D2/D3) in this dictionary: the underlying fact, which country issued this application, is the same, but Visa's own risk-management logic, defined outside core EMV Book 3, consults its own tag for it rather than relying solely on 5F28. A terminal or analysis tool that only decodes core tags will see 5F28 and consider the country-code question answered, without ever noticing that 9F57 is present and, in principle, could carry a different value if the two were ever out of sync on a given card - a discrepancy worth checking for specifically, not assuming away. Its source citation carries the export's verificar vigencia flag, pending confirmation against the acervo. See Visa ICC Specification (VIS) 1.5.
- What format and length does EMV tag 9F57 use?
- Tag 9F57 uses the Numeric (BCD) format and is normally 2 bytes long.
- Is tag 9F57 provided by the card or the terminal?
- Tag 9F57 (Issuer Country Code (Visa)) is provided by the Card (ICC).
Sources
- Visa ICC Specification (VIS) - Version 1.5, p. 131
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