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  2. WAMU IINs

WAMU Credit Card IIN List

WAMU issues credit and debit cards in United States under a total of two different Issuer Identification Numbers, or IINs (also called bank identification numbers, or BINs). For banks with multiple IINs, cards of the same type or within the same region will generally be issued under the same IIN. The IIN makes up the first six digits of all credit or debit cards issued by WAMU, followed by the primary account number (PAN) and a check digit.

Issuer Identification Number (IIN) Card Number Format Type of Card Country Issued
WAMU Mastercard Card 532220 5322 20XX XXXX XXXX CREDIT United States
WAMU Mastercard Card 532220 5322 20XX XXXX XXXX CREDIT United States

For more information, contact WAMU at (800) 788-7000 .

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Source: http://www.creditcardvalidator.org/wamu