ns1.csgsystems.com has no TXT records.
Question and response
Question
dig ns1.csgsystems.com. TXT
Answer
The response has no answer records.
Authority
csgsystems.com. 900 SOA ns1.csgsystems.com. postmaster.csgsystems.com. 2014021668 900 600 1209600 900
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0