Not an apex domain
The domain 64-121-167-63.s1085.c3-0.eas-cbr3.atw-eas.pa.cable.rcncustomer.com is not the root of its zone.
Instead, try zone transfer on atw-eas.pa.cable.rcncustomer.com .
Instead, try zone transfer on atw-eas.pa.cable.rcncustomer.com .