I got 126 score in Nata .which colleges can I prefer.

Assuming you are from general category so the chances of getting seat in good colleges is less as it requires more than 145 for the same but there is no common counseling so all colleges will be having different admission criteria and cut off as well. So I would suggest you to try to apply for more number of colleges as this will make the chances of getting seat positive.

Hope this helps!!!