Apex domains cannot have CNAME records.
Question and response
Question
dig uoregon.edu. NS
Answer
uoregon.edu. 4 NS NS1.F5CLOUDSERVICES.COM.
uoregon.edu. 4 NS phloem.uoregon.edu.
uoregon.edu. 4 NS ruminant.uoregon.edu.
uoregon.edu. 4 NS lsu-bdds1.lsu.edu.
Authority
The response has no authority records.
Additional
ns1.f5cloudservices.com. 4 A 107.162.234.197
phloem.uoregon.edu. 4 A 128.223.32.35
ruminant.uoregon.edu. 4 A 128.223.60.22
lsu-bdds1.lsu.edu. 4 A 192.16.176.90
ns1.f5cloudservices.com. 4 AAAA 2604:e180:1071:0:0:0:3:1
phloem.uoregon.edu. 4 AAAA 2001:468:d01:20:0:0:80df:2023
ruminant.uoregon.edu. 4 AAAA 2001:468:d01:3c:0:0:80df:3c16
lsu-bdds1.lsu.edu. 4 AAAA 2620:105:b050:1550:0:0:0:90
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0