Both the A330-300 and A330-900 seems to use N339SB, also the A330-200 seems to use N315SB which is slightly inconsistent with the typical pattern.
Regards,
Tim
Similarly, the A340-200 and -300 use N342SB resp. N343SB, but the -500 and -600 use N542SB and N634SB for some reason.
Regards,
Tim