the security code of the credit card is the code, which is located on the back of the credit card and the last three digits of the seven digits in the signature column (the first four digits are the last four digits of the card number). It should be noted that the card number, security code and expiration date of the credit card are important information of the credit card, which is used for security verification in special transactions such as online payment/telephone authorization, so it must be kept well and cannot be disclosed. Credit card security code is a set of 3 or 4 digits on the credit card. Its generation method is that the bank extracts the card account number, validity period and service code, arranges them and then calculates them through a series of complicated algorithms. After this set of numbers is generated, only the issuing bank and the holder of the bank card know what the number is.
1. The inquiry method of CCB's bank number is as follows:
1) Bank counter inquiry: You can go to the nearby CCB business hall, bring your ID card and ask the staff for the card number.
2) online banking inquiry: if you have opened the personal online banking of CCB, you can log in to the online banking of CCB, and then enter the My Account menu to check your credit card number through the account list.
3) Customer service telephone inquiry: You can also directly call the customer service telephone number of China Construction Bank at 95533 or 4-82-588, and you can inquire the card number by entering the ID number you filled in when you apply for the card.
4) mobile banking inquiry: you can log in to the mobile client of CCB, click the "three" sign in the upper left corner of the homepage, and then click "Security Center". After the page jumps, click "Information Switch", then find out "Does my account show all accounts?" Click "Open", then return to the homepage of CCB APP, and click "Fortune" to enter my wealth center.
2. The above are the four ways to check the card number of CCB's credit card. It is very convenient to check the card number of CCB's credit card. You can operate it directly with your mobile phone without complicated steps. Friends who need to check their own CCB credit card number can refer to the above contents.
operating environment:
mobile phone model: ELS-AN 2...212
China construction bank: 5.6.2.