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BIN 374333 – American Express Credit Card from Best

Bank identification number 374333 belongs to an American Express Personal Gold Revolve credit card range of Best in Portugal. Below: card format, test numbers and related BINs.

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374333American Express Credit
Network
American Express
Type
Credit
Level
Personal Gold Revolve
Issuer
Best
Country
Portugal PT
Card length
15 digits
Security code
4-digit CID on the front
8-digit range
37433300–37433399

Generate test numbers with this BIN Open in BIN generator

Sample test numbers for BIN 374333 Test data

NumberExpiryCIDCopy
3743 334579 2456411/20318846
3743 332408 7354003/20315507
3743 333540 6322703/20292007

Luhn-valid numbers built from this BIN for testing forms and BIN rules. No bank issued them: they belong to no account and every real payment with them is declined.

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About BIN 374333

BIN 374333 is listed as an American Express Personal Gold Revolve credit card issued by Best in Portugal. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards. Gold is a mid-tier product between the entry level (Classic or Standard) and premium tiers such as Platinum.

Best has fewer than ten BINs in our data, so it has no bank page; 2 BINs starting with 374 belong to it.

Portugal has 643 BINs in the dataset; among the 523 that name an issuer, the main networks are Visa (64%), Mastercard (22%), American Express (7%), and 36% are debit. See the Portugal BIN list.

American Express number format for BIN 374333

Starts with374333 (the BIN). First digit 3: travel and entertainment
Length15 digits
Security code4-digit CID on the front
Check digitThe last digit, calculated with the Luhn algorithm
Printed as3743 334579 24564

A checkout that receives a number starting with 374333 should detect American Express, expect 15 digits and ask for a 4-digit security code. The generator creates as many numbers with this BIN as you need, with expiry dates and CVVs, as CSV, JSON or XML.

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Nearby BINs

The BINs closest to 374333 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.

More BINs from Best

Frequently asked questions

Which bank issued BIN 374333?

BIN 374333 is registered to Best in Portugal. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.

Is 374333 a debit or a credit card BIN?

It is recorded as credit, product level Personal Gold Revolve. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards.

How many digits does a card with BIN 374333 have?

American Express card numbers have 15 digits, and the security code is a 4-digit CID on the front. The first six digits are the BIN, the last digit is the Luhn check digit, and the digits in between identify the account.

Can I generate test card numbers with BIN 374333?

Yes. Open the generator with this BIN to create Luhn-valid numbers with expiry dates and CVVs for testing forms, validation and BIN-based rules. They are test data: not issued by Best, linked to no account and declined by real payment systems.

Does a BIN tell me whether a card is valid?

No. A BIN describes a range of card numbers — network, issuer, country and product — not a particular card. Whether a card exists or can be charged is known only to the issuing bank. To check the format of a full number (length and check digit), use the card validator.

A BIN identifies the card network and the issuing institution only. It reveals nothing about an individual card, cardholder or account, and it cannot show whether a card exists or can be charged. Test numbers generated from a BIN are for development and QA only and are declined by every real payment system.

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BIN data: bin-list-data by Venelin Kochev (a lite version of binlookup.io), licensed under CC BY 4.0. Changes made by Fakecreditcard: issuer, brand and country names re-cased and standardized, spelling variants of the same issuer merged, malformed phone numbers and web addresses removed.

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