How to become ASNT certified as someone who is NAS410 certified? USA

Hey guys, do you need to be under an ASNT Level III to get ASNT certified? My current company only requires NAS410 certifications and my training letter only designated me as an NAS410 trainee. I have all my OJT training hours documented and a Level III with ASNT certifications did sign my papers. However, he was someone who was hired from out of the company. Our current level 3s are only NAS410 certified. I am currently an NAS410 Level 2.