Regex for IBAN mask

Question

I am trying to extract this text \"NL dd ABNA ffffdffffdffffd\" from string:

IBAN NL 91ABNA0417463300
IBAN NL91ABNA0417164300
Iban: NL 69 ABNA 402032566

Answer 1

The problem in your regex101 demo is, there is an extra character in your regex after $ so remove that and change 0 to [0 ] and this fixes all and starts matching your third line too. The correct regex becomes,

NL\s?\d{2}\s?[A-Z]{4}[0 ]\s?\d{9}$

Check your updated demo