What is the joint line number of the bank card? How to check?

The joint bank number of the bank can directly call the bank service hotline for manual customer service inquiry.

For example, the Postal Savings Bank can directly call the 95580 hotline for manual inquiry and follow the customer service prompts.

Bank bank number consists of 12 digits: 3 digits bank code +4 digits city code +4 digits bank number+1 digit parity bit.

Extended data:

Union bank number is the only identification symbol of regional banks. It is used for cross-regional payment and settlement services such as large payment system, small payment system, bank draft system of city commercial banks and national check imaging system (including automatic bill sorting system in some cities) organized by the People's Bank of China.

The electronic banking number consists of six digits and is used for cross-regional bank settlement and fund settlement. Electronic banking number and electronic banking system, as well as the connection between heaven and earth, have been cancelled and no longer used.

References:

Baidu Encyclopedia _ Bank Union Line Number