234.212.167.190.l.sta.codetel.net.do has no MX records.
Question and response
Question
dig 234.212.167.190.l.sta.codetel.net.do. MX
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0