vpn.netcompartner.com has no SRV records.
Question and response
Question
dig vpn.netcompartner.com. SRV
Answer
The response has no answer records.
Authority
vpn.netcompartner.com. 38400 SOA s1.netcompartner.com. hostmaster.netcompartner.com. 1373960201 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0