_b5c939eeb917fd7da88a70d4a3013ef1.bxmgrlxjqk.acm-validations.aws AXFR zone transfer

Not an apex domain The domain _b5c939eeb917fd7da88a70d4a3013ef1.bxmgrlxjqk.acm-validations.aws is not the root of its zone.
Instead, try zone transfer on bxmgrlxjqk.acm-validations.aws .