45.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 45.in-addr.arpa. NS

Answer

45.in-addr.arpa. 5 NS arin.authdns.ripe.net. 45.in-addr.arpa. 5 NS u.arin.net. 45.in-addr.arpa. 5 NS r.arin.net. 45.in-addr.arpa. 5 NS x.arin.net. 45.in-addr.arpa. 5 NS y.arin.net. 45.in-addr.arpa. 5 NS z.arin.net.

Authority

The response has no authority records.

Additional

u.arin.net. 1 A 204.61.216.50 u.arin.net. 1 AAAA 2001:500:14:6050:ad:0:0:1 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0