dns4.pbxhosting.com.mx has no TXT records.
Question and response
Question
dig dns4.pbxhosting.com.mx. TXT
Answer
The response has no answer records.
Authority
dns4.pbxhosting.com.mx. 86400 SOA dns3.pbxhosting.com.mx. ti.pbxhosting.com.mx. 2025061200 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0