ld5-relay.broadcloudmeeting.com has no CNAME records.
Question and response
Question
dig ld5-relay.broadcloudmeeting.com. NS
Answer
The response has no answer records.
Authority
broadcloudmeeting.com. 109 SOA hns001.sjc03.webex.com. bce-sys.broadsoft.com. 2014120282 10800 1800 2419200 120
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0