otherspool.core.kcom.com has no CNAME records.
Question and response
Question
dig otherspool.core.kcom.com. NS
Answer
The response has no answer records.
Authority
core.kcom.com. 9220 SOA ibex.kcom.com. hostmaster.kcom.com. 2013062501 28800 7200 604800 28800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0