cable.rcncustomer.com has no TXT records.
Question and response
Question
dig cable.rcncustomer.com. TXT
Answer
The response has no answer records.
Authority
cable.rcncustomer.com. 86400 SOA master.dns.rcn.net. hostmaster.rcn.com. 2017071802 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0