The official SWIFT or BIC code assigned to SpareBank 1 Østfold Akershus for processing secure international wire transfers and cross-border financial transactions is RYGSNO21XXX. This standard eleven-character identifier breaks down into specific institutional and geographic components, where "RYGS" serves as the unique bank code designation, "NO" identifies Norway as the country of registration, "21" denotes the regional location code, and the trailing "XXX" signifies the primary head office or main operational branch routing designation. Senders initiating funds transfers from overseas accounts to this specific regional bank within the SpareBank 1 alliance must verify that this exact code is included alongside the recipient's valid Norwegian IBAN to prevent routing delays or transaction rejections by intermediary clearing networks.