Does the number of characters in the IBAN correspond to the number specified for this country? Because SWIFT originally introduced what was later standardized as Business Identifier Codes (BICs), they are still often called SWIFT addresses or codes. Move the four initial characters to the end of the string.

Routing numberBank NameAdressCityStateZIP
211287447 BANGOR FEDERAL CR UNION P. O. BOX 1161 BANGOR ME 044021161