Apex domains cannot have CNAME records.
Question and response
Question
dig apollo.lv. NS
Answer
apollo.lv. 5 NS ns.online.lv.
apollo.lv. 5 NS ns3.online.lv.
apollo.lv. 5 NS ns2.online.lv.
Authority
The response has no authority records.
Additional
ns.online.lv. 5 A 81.198.92.33
ns2.online.lv. 5 A 195.122.12.113
ns3.online.lv. 5 A 51.104.138.207
ns.online.lv. 5 AAAA 2a02:2330:a:20:0:0:0:2
ns2.online.lv. 5 AAAA 2a02:2330:a:21:0:0:0:2
ns3.online.lv. 5 AAAA 2603:1020:2:3:0:0:0:9b
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0