Not an apex domain
The domain 146-115-122-207.s1229.c3-0.sth-cbr1.sbo-sth.ma.cable.rcncustomer.com is not the root of its zone.
Instead, try zone transfer on sbo-sth.ma.cable.rcncustomer.com .
Instead, try zone transfer on sbo-sth.ma.cable.rcncustomer.com .