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BIN 555170 – Mastercard Credit Card from Citibank Taiwan Ltd.

The first six digits 555170 identify a Mastercard Corporate Purchasing credit card issued by Citibank Taiwan Ltd. (Taiwan). Below: card format, test numbers and related BINs.

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555170Mastercard Credit
Network
Mastercard
Type
Credit
Level
Corporate Purchasing
Issuer
Citibank Taiwan Ltd.
Country
Taiwan TW
Card length
16 digits
Security code
3-digit CVC2 on the back
8-digit range
55517000–55517099
Issuer phone
+886287269690
Issuer website
www.citibank.com.tw

Generate test numbers with this BIN Open in BIN generator All BINs of this bank

Sample test numbers for BIN 555170 Test data

NumberExpiryCVVCopy
5551 7056 8112 474511/2027063
5551 7040 9924 207407/2031300
5551 7054 0641 155905/2027632

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 555170

In our BIN data, 555170 is a Mastercard Corporate Purchasing credit card range that belongs to Citibank Taiwan Ltd., registered in Taiwan. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards. Business, corporate and commercial products are issued to companies for company spending and often carry different interchange fees from consumer cards.

With 15 BINs, Citibank Taiwan Ltd. ranks 28th among the 31 banks we list for Taiwan. The Citibank Taiwan Ltd. BIN list shows all of them with network, type and level.

Across Taiwan, the dataset counts 1,262 BINs; among the 1,167 that name an issuer, the main networks are Mastercard (38%), Visa (38%), JCB (10%), and 10% are debit. See the Taiwan BIN list or the Taiwan card generator.

Mastercard number format for BIN 555170

Starts with555170 (the BIN). First digit 5: banking and financial
Length16 digits
Security code3-digit CVC2 on the back
Check digitThe last digit, calculated with the Luhn algorithm
Printed as5551 7056 8112 4745

When you test with this BIN, check that your form shows the Mastercard logo, groups the 16 digits correctly and rejects numbers whose check digit is wrong. 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

BINs just below and above 555170. Banks often hold consecutive ranges, so neighbours can be sister products of the same issuer.

More BINs from Citibank Taiwan Ltd.

All 15 BINs of Citibank Taiwan Ltd. →

Frequently asked questions

Which bank issued BIN 555170?

BIN 555170 is registered to Citibank Taiwan Ltd. in Taiwan. The dataset lists the website www.citibank.com.tw. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.

Is 555170 a debit or a credit card BIN?

It is recorded as credit, product level Corporate Purchasing. 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 555170 have?

Mastercard card numbers have 16 digits, and the security code is a 3-digit CVC2 on the back. 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 555170?

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 Taiwan 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.

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