Apex domains cannot have CNAME records.
Question and response
Question
dig bredband.com. NS
Answer
bredband.com. 5 NS ns1.bredband.com.
bredband.com. 5 NS dns.bostream.com.
bredband.com. 5 NS ns2.bredband.com.
Authority
The response has no authority records.
Additional
dns.bostream.com. 5 A 81.26.229.2
ns1.bredband.com. 5 A 195.54.122.193
ns2.bredband.com. 5 A 195.54.122.194
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0