Aviṣita (Avikshita) was the son of the king of Puru dynasty, Rājarṣi (Rajarshi) Kuru. Uccaiḥśravā (Uchchaisraba) was one of the sons of Aviṣita (Avikshita).

Mahābhārata (Kinjawadekar)(1.94.53.)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(1,89.40-41.)