Question and response
Question
dig *.rb.slc.efscloud.net. NS
Answer
*.rb.slc.efscloud.net. 5 CNAME rb-prd-vaultflow.slc.efscloud.net.
Authority
efscloud.net. 418 SOA ns1.efscloud.net. efscloud.net.domainsbyproxy.com. 394 600 300 3600000 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0