From: Tim Becker Date: 2007-04-27T21:22:10+09:00 Subject: Re: [QUIZ] Checking Credit Cards (#122) > For completeness and to make this Quiz exercise valid to more people, > can anyone include the information for other major credit cards from > major countries? Japan: JCB, et. al., U.K.: Barclay, et. al. , etc... UK had Switch and Solo till recently which are now rebranded under the Maestro umbrella. They're not really credit cards and basically no rules exist, you have to check tables to determine valid prefixes and card number length. Additionally, Maestro card numbers may also be Mastercard numbers, so they can't be uniquely identified as being Maestro. For JCB and Diner's: JCB 3528-2589 Length: 16 Diners 3000-3029, 3040-3059, 36, 3815-3889, 389 Length: 14 Cheers, -Tim