FakecreditcardAbout BIN 521846
BIN 521846 is listed as a Mastercard World credit card issued by Diamond Credit Union in the United States. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards. World and World Elite are Mastercard's premium consumer tiers, above Standard and Gold.
Diamond Credit Union has 11 BINs in the dataset, which makes it 642nd of 775 banks with a BIN page in the United States. The Diamond Credit Union BIN list shows all of them with network, type and level.
The United States has 156,869 BINs in the dataset; among the 73,133 that name an issuer, the main networks are Visa (50%), Mastercard (22%), Discover (17%), and 46% are debit. See the United States BIN list or the United States card generator.
Mastercard number format for BIN 521846
| Starts with | 521846 (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 | 5218 4675 3266 8256 |
A checkout that receives a number starting with 521846 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 521846 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.
More BINs from Diamond Credit Union
All 11 BINs of Diamond Credit Union →
Frequently asked questions
Which bank issued BIN 521846?
BIN 521846 is registered to Diamond Credit Union in the United States. The dataset lists the website diamondcu.org. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 521846 a debit or a credit card BIN?
It is recorded as credit, product level World. 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 521846 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 521846?
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 Diamond Credit Union, 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.