“many Russian banks, including some key ones involved in energy transactions, have not been barred from SWIFT. According to the Atlantic Council, “most of Russia’s regional and smaller banks, over 300, still have access to SWIFT, enabling Russia to conduct cross-border payments and transactions for imports and exports.”
“The fact that the shut out was not universal has left ample scope for Russian banks to continue to benefit from SWIFT messaging services,” said Keatinge of RUSI Europe.”
https://www.politico.com/news/2024/02/24/russia-economy-west-sanctions-00142713