Understanding your Credit Card Number

You credit card number may look like a random string of 16 digits that’s unique in the world but those digits reveal a little more than you think.

Making Sense of you Credit Card Number

The first digit of the card represents the category of industry which issued your credit card. American Express is in the travel category and cards issued by them have 3 as the first digit. If you have VISA or MasterCard, your card’s first digit should be either 4 or 5 as they are from the banking and financial industry.

The first six digits of your credit card number identify the institution that issued the card to you. VISA cards follow the series 4xx while MasterCard uses 51-55 as the prefix.

You may even verify if a given credit card number is valid or not using simple addition. The following visual illustration courtesy Mint.com will help you understand more about the anatomy of your credit card.

Credit Card Number

Amit Agarwal

Amit Agarwal

Google Developer Expert, Google Cloud Champion

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India.

Amit has developed several popular Google add-ons including Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory

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Awards & Titles

Digital Inspiration has won several awards since it's launch in 2004.

Google Developer Expert

Google Developer Expert

Google awarded us the Google Developer Expert award recogizing our work in Google Workspace.

ProductHunt Golden Kitty

ProductHunt Golden Kitty

Our Gmail tool won the Lifehack of the Year award at ProductHunt Golden Kitty Awards in 2017.

Microsoft MVP Alumni

Microsoft MVP Alumni

Microsoft awarded us the Most Valuable Professional (MVP) title for 5 years in a row.

Google Cloud Champion

Google Cloud Champion

Google awarded us the Champion Innovator title recognizing our technical skill and expertise.

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