Apex domains cannot have CNAME records.
Question and response
Question
dig design.200.218.195.in-addr.arpa. NS
Answer
design.200.218.195.in-addr.arpa. 5 NS ns2.office.design.ru.
design.200.218.195.in-addr.arpa. 5 NS ns.office.design.ru.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0