The International Bank Account Number (IBAN) is an international standard for identifying bank accounts across national borders with a minimal risk of propagating transcription errors. This often led to necessary routing information being missing from payments. The numbering ranges for both are complementary, but do not overlap.
Sort code is a bank code used in British banking industry to route money transfers between banks within United Kingdom. Sorting code and BIC allocation
Members have ranges of sorting codes that they can allocate to bank offices.