GeekZilla
Credit Card Number Ranges
Here is the basic set of credit card number ranges:
| Issuer | Identifier | Card Number Length |
| Diner's Club/Carte Blanche | 300xxx-305xxx, 36xxxx, 38xxxx | 14 |
| American Express | 34xxxx, 37xxxx | 15 |
| VISA | 4xxxxx | 13, 16 |
| MasterCard | 51xxxx-55xxxx | 16 |
| Discover | 6011xx | 16 |
More information
Anatomy of Credit Card Numbers by Michael Gilleland
Author Paul Hayman
Paul is the COO of kwiboo ltd and has more than 20 years IT consultancy experience. He has consulted for a number of blue chip companies and has been exposed to the folowing sectors: Utilities, Telecommunications, Insurance, Media, Investment Banking, Leisure, Legal, CRM, Pharmaceuticals, Interactive Gaming, Mobile Communications, Online Services.
Paul is the COO and co-founder of kwiboo (http://www.kwiboo.com/) and is also the creator of GeekZilla.
