Company: Stripe_31_Dec
Difficulty: medium
Card Range Obfuscation body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", "Arial", sans-serif; line-height: 1.6; color: #333; max-width: 800px; margin: 20px auto; padding: 0 20px; } h1, h2, h3 { border-bottom: 1px solid #eaecef; padding-bottom: 0.3em; } code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace; background-color: #f6f8fa; padding: 0.2em 0.4em; margin: 0; font-size: 85%; border-radius: 3px; } pre { background-color: #f6f8fa; padding: 16px; overflow: auto; border-radius: 3px; } pre code { padding: 0; margin: 0; font-size: 100%; background-color: transparent; } ul { padding-left: 20px; } Card Range Obfuscation Description Payment card numbers are composed of eight to nineteen digits. The leading six of which are referred to as the bank identification number (BIN). Stripe's card metadata API exposes information about different card brands within each BIN range, by returning a mapping of card inte