Romania, as an EU member, uses the International Bank Account Number (IBAN) system—not US-style routing numbers (ABA/RTN).
RO + 2 check digits + 4-char bank code + 16-char account branch/code
Example: RO12 INGB 1234 5678 9012 3456
RO = Country code12 = Check digits (mod-97 validation)INGB = Bank code (ING Bank)1234567890123456 = Branch + account identifierINGBROBU) used alongside IBAN for cross-borderWhen sending money to Romania, provide the recipient's full IBAN and BIC. No "routing number" exists.