Generally speaking, the bank key is the combination of the bank's clearing code and the branch code. It seems that not all banks in the mainland have clearing codes, and the cooperative association you want to inquire about should not have a bank key.

1. If you know swift in the head office of the bank, you can go directly to swift official website: swift.com to check the branch code. For example, the head office of China Bank: BKCHCNBJ, you can enter BKCHCNBJ in the BIC column, enter the corresponding country and city, and then click Search.

2. If you don't know the bank code, you can also enter the English name of the bank in the institution name column, such as Bank of China, and click Search for the corresponding information.

3. If you don't know the bank code or the English name of the bank, recommend a domestic website with a comprehensive bank code: swiftcode.cn. Choose a bank, city and branch, and it is relatively easy to find the information you want.

Extended data:

SWIFT code?

Global Association of Banking, Finance and Telecommunications. SWIFT is a cooperative organization, operating a world-class financial message network, through which banks and other financial institutions exchange messages with their peers, thus completing financial transactions.

In addition, SWIFT also sells software and services to financial institutions, and most of its users are using the SWIFT network. As of June 2007, SWIFT's services have been extended to 207 countries, with more than 865,438+000 financial institutions connected to the Internet.

References:

Baidu encyclopedia _SWIFT code