Want to know what credit cards start with 3727? We were curious too! Keep reading and we’ll tell you what we found.

Every credit card has either 15 or 16 total digits. Why not one or the other? It turns out that the total number of digits depends on what card network the card uses. Visa, Mastercard, and Discover use 16 digits while American Express uses 15 digits. Interestingly, every one of those 15 or 16 digits has a hidden meaning. Besides being unique to you, they can tell us what type of card it is, the bank that issued the card, and what account is associated with the card. There’s even a digit at the end that’s used to make sure you entered all the other numbers correctly.

What Does The ‘3’ in 3727 Mean?

Knowing the card’s first digit helps us discover the credit card network the card belongs to. The best-known credit card networks are Visa, Mastercard, and American Express. Although they’re the biggest card networks, they’re not the only ones! Besides the big three, there’s also Discover, Diner’s Club, Carte Blanche, JCB, and a few smaller ones.

The first digit of the credit card is called a “Major Industry Identifier”. Why? It’s because the first number tells us what credit card network the card belongs to. For “3727” the first digit is a “3”. It turns out that if the first digit is a “3” it’s always an American Express, Diner’s Club, Carte Blanche, or JCB credit card.

This means our card can’t be a Visa, Mastercard, or Discover credit card. Although we haven’t narrowed it down to one car network yet, we do know that a “3727” credit card must be an American Express, Diner’s Club, Carte Blanche, or a JCB card.

How about other credit card prefixes? A card that begins with a “4” is always a Visa card. A “2” or a “5” would be a Mastercard credit card, and a “6” would be a Discover card. It used to be that Mastercard only used a “5” but they also started using a “2” a few years back.

Is a 3727 Credit Card a Visa, Mastercard, or American Express?

A 3727 credit card is always American Express! How do we know that? It’s because every card starting with 34 or 37 is an American Express card! Another clue is that only American Express has 15-digit card numbers. Visa and Mastercard credit and debit cards are always 16 digits, never 15.

That’s not the whole story, though! Although every 3727 card will be an Amex, there are many different types of Amex credit cards. Not all American Express cards are equal! We detail all the different types of 3727 cards in the next section.

What Do The Rest of The American Express Credit Card Numbers Mean?

Now that we know that a 3727 prefix credit card is an American Express card, we’re already part way to solving the secret behind the numbers. To solve the rest of the mystery, we’ll need to decipher the remaining “727” bit.

It turns out that the 2nd through 6th digits of a credit card tell us who the card issuer is and the exact kind of credit card. In credit card industry-speak, these numbers are called the “Bank Identification Number”. Okay, but we only have 3 of the Bank Identification Numbers, not 6. Is that a problem? Nope! We can still solve the mystery behind the numbers by using the 3 remaining numbers that we do have.

List of BINs/IINs for American Express Credit Cards Starting with 3727

After researching the issue, we found the answers to the 3727 credit card mystery. It turns out that a 3727 credit or debit card will always be 1 of 100 possible American Express credit and debit cards.

Below are the BIN/IIN details, including the banks and issuing institutions, for all 100 of the 3727 credit cards and debit cards.

BINs/IINs from 372700 to 372710 (Credit Card Types)

• 372700 is an American Express personal credit card issued by American Express Company in the United States
• 372701 is an American Express personal credit card issued by American Express Company in the United States
• 372702 is an American Express personal credit card issued by American Express Company in the United States
• 372703 is an American Express personal credit card issued by American Express Company in the United States
• 372704 is an American Express personal credit card issued by American Express Company in the United States
• 372705 is an American Express personal credit card issued by American Express Company in the United States
• 372706 is an American Express personal credit card issued by American Express Company in the United States
• 372707 is an American Express personal credit card issued by American Express Company in the United States
• 372708 is an American Express personal credit card issued by American Express Company in the United States
• 372709 is an American Express personal credit card issued by American Express Company in the United States
• 372710 is an American Express company credit card issued by American Express Company in the United States

BINs/IINs from 372711 to 372720 (Credit Card Types)

• 372711 is an American Express company credit card issued by American Express Company in the United States
• 372712 is an American Express company credit card issued by American Express Company in the United States
• 372713 is an American Express company credit card issued by American Express Company in the United States
• 372714 is an American Express company credit card issued by American Express Company in the United States
• 372715 is an American Express company credit card issued by American Express Company in the United States
• 372716 is an American Express company credit card issued by American Express Company in the United States
• 372717 is an American Express company credit card issued by American Express Company in the United States
• 372718 is an American Express company credit card issued by American Express Company in the United States
• 372719 is an American Express company credit card issued by American Express Company in the United States
• 372720 is an American Express company credit card issued by American Express Company in the United States

BINs/IINs from 372721 to 372730 (Credit Card Types)

• 372721 is an American Express company credit card issued by American Express Company in the United States
• 372722 is an American Express company credit card issued by American Express Company in the United States
• 372723 is an American Express company credit card issued by American Express Company in the United States
• 372724 is an American Express company credit card issued by American Express Company in the United States
• 372725 is an American Express company credit card issued by American Express Company in the United States
• 372726 is an American Express company credit card issued by American Express Company in the United States
• 372727 is an American Express company credit card issued by American Express Company in the United States
• 372728 is an American Express company credit card issued by American Express Company in the United States
• 372729 is an American Express company credit card issued by American Express Company in the United States
• 372730 is an American Express platinum credit card issued by American Express Company in the United States

BINs/IINs from 372731 to 372740 (Credit Card Types)

• 372731 is an American Express platinum credit card issued by American Express Company in the United States
• 372732 is an American Express small corporate credit card issued by American Express Company in the United States
• 372733 is an American Express platinum credit card issued by American Express Company in the United States
• 372734 is an American Express Blue for Business credit card issued by American Express Company in the United States
• 372735 is an American Express Blue for Business credit card issued by American Express Company in the United States
• 372736 is an American Express gold credit card issued by American Express Company in the United States
• 372737 is an American Express gold credit card issued by American Express Company in the United States
• 372738 is an American Express credit card issued by American Express Company in the United States
• 372739 is an American Express gold credit card issued by American Express Company in the United States
• 372740 is an American Express prepaid debit card issued by American Express Company in the United States

BINs/IINs from 372741 to 372750 (Credit Card Types)

• 372741 is an American Express prepaid debit card issued by American Express Company in the United States
• 372742 is an American Express prepaid debit card issued by American Express Company in the United States
• 372743 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372744 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372745 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372746 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372747 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372748 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372749 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372750 is an American Express personal credit card issued by AMEX Canada Globestar in Canada

BINs/IINs from 372751 to 372760 (Credit Card Types)

• 372751 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372752 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372753 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372754 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372755 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372756 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372757 is an American Express personal credit card issued by AMEX Canada Globestar in Canada
• 372758 is an American Express credit card issued by American Express Company in the United States
• 372759 is an American Express credit card issued by American Express Company in the United States
• 372760 is an American Express gold credit card issued by American Express Company in the United States

BINs/IINs from 372761 to 372770 (Credit Card Types)

• 372761 is an American Express gold credit card issued by American Express Company in the United States
• 372762 is an American Express gold credit card issued by American Express Company in the United States
• 372763 is an American Express gold credit card issued by American Express Company in the United States
• 372764 is an American Express gold credit card issued by American Express Company in the United States
• 372765 is an American Express gold credit card issued by American Express Company in the United States
• 372766 is an American Express gold credit card issued by American Express Company in the United States
• 372767 is an American Express gold credit card issued by American Express Company in the United States
• 372768 is an American Express gold credit card issued by American Express Company in the United States
• 372769 is an American Express gold credit card issued by American Express Company in the United States
• 372770 is an American Express gold credit card issued by American Express Company in the United States

BINs/IINs from 372771 to 372770 (Credit Card Types)

• 372771 is an American Express gold credit card issued by American Express Company in the United States
• 372772 is an American Express gold credit card issued by American Express Company in the United States
• 372773 is an American Express gold credit card issued by American Express Company in the United States
• 372774 is an American Express gold credit card issued by American Express Company in the United States
• 372775 is an American Express gold credit card issued by American Express Company in the United States
• 372776 is an American Express gold credit card issued by American Express Company in the United States
• 372777 is an American Express gold credit card issued by American Express Company in the United States
• 372778 is an American Express gold credit card issued by American Express Company in the United States
• 372779 is an American Express gold credit card issued by American Express Company in the United States
• 372780 is an American Express gold credit card issued by American Express Company in the United States

BINs/IINs from 372781 to 372790 (Credit Card Types)

• 372781 is an American Express gold credit card issued by American Express Company in the United States
• 372782 is an American Express gold credit card issued by American Express Company in the United States
• 372783 is an American Express gold credit card issued by American Express Company in the United States
• 372784 is an American Express gold credit card issued by American Express Company in the United States
• 372785 is an American Express gold credit card issued by American Express Company in the United States
• 372786 is an American Express gold credit card issued by American Express Company in the United States
• 372787 is an American Express gold credit card issued by American Express Company in the United States
• 372788 is an American Express gold credit card issued by American Express Company in the United States
• 372789 is an American Express gold credit card issued by American Express Company in the United States
• 372790 is an American Express gold credit card issued by American Express Company in the United States

BINs/IINs from 372791 to 372799 (Credit Card Types)

• 372791 is an American Express gold credit card issued by American Express Company in the United States
• 372792 is an American Express gold credit card issued by American Express Company in the United States
• 372793 is an American Express gold credit card issued by American Express Company in the United States
• 372794 is an American Express gold credit card issued by American Express Company in the United States
• 372795 is an American Express gold credit card issued by American Express Company in the United States
• 372796 is an American Express gold credit card issued by American Express Company in the United States
• 372797 is an American Express gold credit card issued by American Express Company in the United States
• 372798 is an American Express gold credit card issued by American Express Company in the United States
• 372799 is an American Express gold credit card issued by American Express Company in the United States

How Many 3727 Credit Cards Are There?

Examining the results, we now know there are 100 different types of American Express 3727 credit cards.

What Do The Final Card Digits Mean? (Primary Account Number and Check Digit)

Since you’ve read this far, you might be interested in understanding what the rest of the numbers on your card mean. On your 3727 credit card, the 7th to the 14th digits represent the account holder’s account number, which is called a Primary Account Number (PAN).

These eight PAN digits are unique to an account holder and are the most important part of the credit card number. The last digit, called a check digit, is used for verification purposes to avoid charging purchases to the wrong card number.

When typing in your American Express card number, it’s always possible to mistype a digit or two. That’s why the check number, which is the 15th digit, exists. Check digits are used for the detection of typos. The credit card network instantly verifies that everything was entered correctly by running the check digit plus the rest of the preceding portions of the account number through a mathematical formula called the ‘Luhn Algorithm’.

Conclusion: 3727 Credit Card Type? Always an American Express card!

Our results show that there are 100 different types of 3727 credit cards issued worldwide. We hope this credit card information is a helpful resource that satisfies your curiosity. Credit card numbers change, so accuracy is not guaranteed.