BIN 374345: CITIBANK
Issued by CITIBANK 🇺🇸 United States. This page shows the BIN details and lets you generate structurally valid American Express test numbers from the same prefix.
Generated numbers are Luhn-valid test data: they have no account or balance behind them and cannot be used for real payments. Using card numbers you do not own for real purchases is fraud and illegal. For more details, visit our Terms of Service.
BIN details
- BIN / IIN
- 374345
- Network
- American Express
- Card type
- Credit
- Number length
- 15 digits
- Issuer
- CITIBANK
- Issuing country
- 🇺🇸 United States (US)
- Card level
- Personal
- Last seen in dataset
- 2025-02-11
- Source
- Open BIN dataset (binlist.io / Techbuddie Solutions, CC BY 4.0)
Example numbers from BIN 374345
These examples were generated with the Luhn algorithm. They are structurally valid but have no balance and cannot be charged.
- 3743 4550 6959 086
- 3743 4557 4682 743
- 3743 4528 4635 106
- 3743 4501 4726 332
- 3743 4551 5540 893
Use the generator above for a fresh set, or to create cards in bulk.
About BIN 374345
374345 is the first 6 digits of a American Express card number. The range is attributed to CITIBANK in United States. The BIN (Bank Identification Number), formally called the IIN (Issuer Identification Number), tells payment systems which network and institution a card belongs to.
Issuer BIN ranges are reassigned over time, so always confirm critical decisions with the card network or your acquirer. Want to classify another prefix? Use the BIN checker. Looking for provider-specific test numbers? See the test card numbers reference. Need to validate a full number? Try the Luhn validator.
FAQ
- Which bank issued BIN 374345?
- According to the open BIN dataset, BIN 374345 is attributed to CITIBANK in United States. Banks rename and BIN ranges move, so treat this as a best-effort reference.
- Can I use BIN 374345 for real payments?
- No. These numbers are for testing only. They have no balance and cannot be charged. Attempting real transactions with numbers you do not own is illegal.
- Do the generated numbers pass Luhn validation?
- Yes. Every number is generated with a valid check digit, so it passes the Luhn (MOD 10) check — exactly like a real card number would.
- Will my gateway accept these numbers?
- In test mode, gateways typically accept only their own documented test numbers. Generated numbers are best for validating formatting, Luhn checks, storage and UI behaviour.
Issuer and country data on this page comes from the open binlist dataset (CC BY 4.0, merged from iannuttall/binlist-data and venelinkochev/bin-list-data). The data was filtered and reformatted by namso.net. It is not an official IIN register and may lag bank renames or BIN reassignments.
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