ns2.verizon.net has no CNAME records.
Question and response
Question
dig ns2.verizon.net. NS
Answer
The response has no answer records.
Authority
verizon.net. 10800 SOA ns1.verizon.net. dns.verizon.com. 2026022601 86400 3600 15780000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0