The Society for Worldwide Interbank Financial Telecommunication SCRL, SWIFT, has been designated by the ISO Technical Management Board to act as the Registration Authority for International Bank Account Numbers.

If you are from a Country, which has implemented IBAN for financial transactions, then you can find IBAN in your Bank Statement. You can also find IBAN in your online Banking system, besides, you can ask also get IBAN from your Bank.

IBAN number has a series of alphanumeric characters, all of which represent an important information to money transfer process. IBAN length is different for different countries but it is same for all the bank account holders of a country, i.e. UK's Banks Account Holders, IBAN length is 22 characters, France IBAN length is 27. In general, an IBAN number is divided into the following parts:
1. Country code : From left postion 1-2
2. Check digit code : position 3-4
3. Bank identifier code : length differs from country to country
4. Branch code : Not in all countries and length differs from country to country
5. Account number length differs from country to country
The last three (bank, branch, and account numbers) collectively make up the Basic Bank Account Number (BBAN).
To create an example, here's a hypothetical IBAN from a bank in Cyprus:
GB29NWBK60161331926819
Although IBANs are used without any spaces in financial transactions, for convenience we can add some here to make interpreting our fictitious IBAN a little easier.
GB 29 NWBK 601613 31926819
As you can see, United Kingdom uses 22 characters across five sections.
1. The first two characters are the ISO country code. GB is used for Great Britain.
2. The two digits following the country code (29) are the check digits. They help to validate the account number.
3. The next section (NWBK) is the bank code. Obviously, this identifies the specific bank that holds the account. NWBK has been assigned to NATIONAL WESTMINSTER BANK PLC.
4. The fourth string of characters (601613) is the branch code. NATIONAL WESTMINSTER BANK PLC Branch identifier, 601613.
5. Finally, we get to the last string of characters (31926819), which represent a Bank Account Number in NATIONAL WESTMINSTER BANK PLC.

Following countries has implemented IBAN standards for Payment Transfers. The countries are listed in alphabetical order by ISO 3166 country code.

The Single Euro Payment Area (SEPA), is a payment network in Europe that facilitate payment transfers within the European Union countries, Norway, Iceland, Switzerland, and Liechtenstein.
28 countries are member of SEPA Network. While 78 countries currently use the IBAN system. Multiple currencies can also be sent using IBAN, whereas only Euros can be used on the SEPA network. Now many countries in Middle East and the Caribbean have also begun using the IBAN system for digital money transfers.

IBAN is International Bank Account No. IBAN is allotted to the Bank Account Holders of IBAN implementing agencies of the concerned contry as per the IBAN format.
SWIFT Code is the code allotted by The Society for Worldwide Interbank Financial Telecommunication SCRL, SWIFT, to the Bank Branches for transferring International Payments. BIC Code is called Bank Identification Code. As BIC are allotted SWIFT, so BIC codes are also called SWIFT Codes.

Bank Account Holders from one IBAN country can transfer payment to the Bank Account holder of another IBAN Country through IBAN. But the IBAN counties are only 78, so if you want to transfer payment from non IBAN Contires, then you need SWIFT Code of the Bank Branch, Account Number & domestic routing number of that particular branch. Major Banks are member of SWIFT for payment transfer and have implemented SWIFT Payment Transfer Modules in some of their branches.

The Society for Worldwide Interbank Financial Telecommunication SCRL (SWIFT) has allotted SWIFT Codes/BIC to Bank Branches performing International Payment Transfers, customers desirous of transferring payment internationally can approach these bank Branches to transfer payment to other countries. You can find country-wise, City-wise list of the Bank Branches, enabled for International Payment Transfer with SWIFT Codes from following link: