Files named "100kUS.txt" typically contain 100,000 entries of U.S.-based data, such as ZIP codes, names, or IP addresses, commonly used for data science and system testing. Handling these large files requires specialized software like Notepad++ or command-line tools to avoid performance issues. For more on handling large text files, refer to UltraEdit . Large Text File Editor/Viewer - UltraEdit
INFO: Credit card number generated are valid but DOES NOT WORK like an actual credit card. They do not have any actual REAL VALUE. They are for data testing and verification purposes only.