b2b.frontieronline.com has no CNAME records.
Question and response
Question
dig b2b.frontieronline.com. NS
Answer
The response has no answer records.
Authority
frontieronline.com. 10800 SOA auth.roch.ny.frontiernet.net. hostmaster.frontiernet.net. 2505060001 10800 3600 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0