Apex domains cannot have CNAME records.
Question and response
Question
dig NFBCAL.ORG. NS
Answer
nfbcal.org. 5 NS ns3.VIA.NET.
nfbcal.org. 5 NS ns4.ZOCALO.NET.
nfbcal.org. 5 NS ns.NFBCAL.ORG.
nfbcal.org. 5 NS ns2.VIA.NET.
nfbcal.org. 5 NS ns.VIA.NET.
Authority
The response has no authority records.
Additional
ns.via.net. 5 A 209.81.9.1
ns.nfbcal.org. 5 A 45.79.226.29
ns2.via.net. 5 A 216.218.130.58
ns3.via.net. 5 A 209.81.0.254
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0