Question and response
Question
dig _sip._tls.cloudfinder.com. SRV
Answer
_sip._tls.cloudfinder.com. 14400 SRV 100 1 443 sipdir.online.lync.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0