try
2121 or
004, 005, 016, 018, 022, 023, 024, 025, 026, 034, 041, 072, 114, 149, 151, 187, 202, 213, 223, 224, 225, 251
or 193, 348, 373
or find whole list here
http://www.cableforum.co.uk/files/NTLCODELIST.pdf
do note i scouted other sites for some codes