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BIN 508181 – Cirrus Debit Card from Citibank

The first six digits 508181 identify a Cirrus Personal debit card issued by Citibank (United States). Below: card format, test numbers and related BINs.

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508181Cirrus Debit
Network
Cirrus
Type
Debit
Level
Personal
Issuer
Citibank
Country
United States US
Card length
Varies by issuer
Security code
Varies by issuer
8-digit range
50818100–50818199
Issuer phone
+18003749700

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

Sample test numbers for BIN 508181 Test data

NumberExpiryCVVCopy
5081 8165 2054 570812/2027051
5081 8155 9396 712004/2028890
5081 8111 6269 761001/2029289

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 508181

In our BIN data, 508181 is a Cirrus Personal debit card range that belongs to Citibank, registered in the United States. 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). Personal marks an entry-level consumer product.

With 625 BINs, Citibank ranks 13th among the 775 banks we list for the United States. The Citibank BIN list shows all of them with network, type and level.

Across the United States, the dataset counts 156,869 BINs; 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.

Cirrus number format for BIN 508181

Starts with508181 (the BIN). First digit 5: banking and financial
Length16 digits is typical for this prefix
Security code3 digits on most cards
Check digitThe last digit, calculated with the Luhn algorithm
Printed as5081 8165 2054 5708

When you test with this BIN, check that your form shows the Cirrus 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 508181. Banks often hold consecutive ranges, so neighbours can be sister products of the same issuer.

More BINs from Citibank

All 625 BINs of Citibank →

Frequently asked questions

Which bank issued BIN 508181?

BIN 508181 is registered to Citibank in the United States. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.

Is 508181 a debit or a credit card BIN?

It is recorded as debit, product level Personal. 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 508181 have?

Numbers with this prefix are usually 16 digits long. 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 508181?

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, 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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