FakecreditcardAbout BIN 666004
BIN 666004 is listed as a Maestro ATM Card debit card issued by Citibank (Hong Kong), Ltd. in Hong Kong. Debit cards draw money directly from the cardholder's bank account, so checkouts and gateways often treat them differently from credit cards (fees, holds, recurring billing).
Citibank (Hong Kong), Ltd. has 138 BINs in the dataset, which makes it the second-largest of 29 banks with a BIN page in Hong Kong. The Citibank (Hong Kong), Ltd. BIN list shows all of them with network, type and level.
Hong Kong has 1,721 BINs in the dataset; among the 1,311 that name an issuer, the main networks are Mastercard (35%), Visa (27%), American Express (16%), and 24% are debit. See the Hong Kong BIN list or the Hong Kong card generator.
Maestro number format for BIN 666004
| Starts with | 666004 (the BIN). First digit 6: merchandising and banking |
|---|---|
| Length | 12 to 19 digits |
| Security code | 3-digit code (not on every card) |
| Check digit | The last digit, calculated with the Luhn algorithm |
| Printed as | 6660 0418 4448 3489 |
A checkout that receives a number starting with 666004 should detect Maestro, expect 16 digits and ask for a 3-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.
Nearby BINs
The BINs closest to 666004 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.
More BINs from Citibank (Hong Kong), Ltd.
All 138 BINs of Citibank (Hong Kong), Ltd. →
Frequently asked questions
Which bank issued BIN 666004?
BIN 666004 is registered to Citibank (Hong Kong), Ltd. in Hong Kong. The dataset lists the website www.citibank.com.hk. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 666004 a debit or a credit card BIN?
It is recorded as debit, product level ATM Card. Debit cards draw money directly from the cardholder's bank account, so checkouts and gateways often treat them differently from credit cards (fees, holds, recurring billing).
How many digits does a card with BIN 666004 have?
Maestro card numbers have 12 to 19 digits, and the security code is a 3-digit code (not on every card). 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 666004?
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 Citibank (Hong Kong), Ltd., 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.