Credit Card Prefixes, from some mac carding app 4019 Bank of America 4024 Bank of America 4040 Wells Fargo 4053 United Airlines Employee Credit Union 4128 Citibank 4226 Chase Manhattan 4271 Citibank 4302 HHBC 4310 Imperial Savings 4313 MBNA Regular 4317 California Federal 4356 National Bank 4417 First USA Bank Gold 4428 Bank of Hoven 4464 Fleet Bank 4525 First Consumer's National Bank 4673 FCC National Bank 4678 FCC National Bank Gold 4678 Home Federal 4726 Wells Fargo 4800 MBNA Gold 4921 Lloyds Bank 5000 Chemical Bank 5031 Maryland of North America 5201 Mellon Bank 5254 Bank of America 5273 Bank of America 5282 Wells Fargo 5286 Home Federal 5302 Bank One 5321 BayBank 5329 MBNA America 5386 Universal Bank 5398 Universal Bank 5407 Sunoco 5408 Brockum 5410 Wells Fargo 5410 Wells Fargo 5417 Bank of New York 5419 Bank of Hoven 5424 Citibank 5432 Bank of New York 5437 General Motors 5441 Exxon