Not an apex domain
The domain ns2-hosted.lestetelecom.com.br.4.5.a.0.4.0.8.2.ip6.arpa is not the root of its zone.
Instead, try zone transfer on 4.5.a.0.4.0.8.2.ip6.arpa .
Instead, try zone transfer on 4.5.a.0.4.0.8.2.ip6.arpa .