FakecreditcardAbout BIN 521003
In our BIN data, 521003 is a Mastercard Mixed Product credit card range that belongs to Rakuten Card Co.,ltd., registered in Japan. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards.
With 32 BINs, Rakuten Card Co.,ltd. ranks 15th among the 49 banks we list for Japan. The Rakuten Card Co.,ltd. BIN list shows all of them with network, type and level.
Across Japan, the dataset counts 13,915 BINs; among the 5,015 that name an issuer, the main networks are Visa (36%), Diners Club (28%), Mastercard (23%), and 7% are debit. See the Japan BIN list or the Japan card generator.
Mastercard number format for BIN 521003
| Starts with | 521003 (the BIN). First digit 5: banking and financial |
|---|---|
| Length | 16 digits |
| Security code | 3-digit CVC2 on the back |
| Check digit | The last digit, calculated with the Luhn algorithm |
| Printed as | 5210 0399 0618 1659 |
A checkout that receives a number starting with 521003 should detect Mastercard, 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 521003 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.
More BINs from Rakuten Card Co.,ltd.
All 32 BINs of Rakuten Card Co.,ltd. →
Frequently asked questions
Which bank issued BIN 521003?
BIN 521003 is registered to Rakuten Card Co.,ltd. in Japan. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 521003 a debit or a credit card BIN?
It is recorded as credit, product level Mixed Product. 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 521003 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 521003?
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 Rakuten Card Co.,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.