mxr01.hostway.com has no CNAME records.
Question and response
Question
dig mxr01.hostway.com. NS
Answer
The response has no answer records.
Authority
hostway.com. 257 SOA a.dns.hostway.net. hostmaster.siteprotect.com. 2026020905 86400 7200 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0