You can find the MCC for different purchases/stores on your credit card statement, so your best bet is to go back into your statement and see exactly how the merchant description is coded so you know for future reference.
How to Find a Business Merchant Category Code (MCC)
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1966 (as Interbank Card Association) 1979 (as MasterCard)
Mastercard International Global Headquarters, Purchase, New York , U.S.
Mastercard - Wikipedia
en.wikipedia.org > wiki > Mastercard
For the benefit of readers who aren't familiar, a merchant category code (MCC) is a four-digit number the major credit card networks (Visa, Discover, American Express and Mastercard) assign to every business that applies to accept credit cards. ... Major airlines and hotels each have their own MCC codes.
How to find a business's merchant category code - CreditCards.com
www.creditcards.com > credit-card-news > how-to-find-business-mcc-code
Securities, Brokers, Dealers MCC 6211 is defined by Mastercard as: Merchants that buy, sell, and broker securities, stocks, bonds, commodities, and mutual funds. ... The MCC 6211 is commonly applied to merchants accounts of businesses engaged financial services such as securities, investments, forex, and CFD.
MCC 6211 - Nicheknow
nicheknow.com > 2020/06/01 > mcc-6211