Not an apex domain
The domain 216-15-95-239.s3053.c3-0.tlg-cbr4.atw-tlg.pa.cable.rcncustomer.com is not the root of its zone.
Instead, try zone transfer on atw-tlg.pa.cable.rcncustomer.com .
Instead, try zone transfer on atw-tlg.pa.cable.rcncustomer.com .