SRV1.TELCONET.NET has no CNAME records.
Question and response
Question
dig SRV1.TELCONET.NET. NS
Answer
The response has no answer records.
Authority
telconet.net. 707 SOA srv1.telconet.net. hostmaster.telconet.net. 2590 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0