Question and response
Question
dig _netblock4.teco.com.ar. TXT
Answer
_netblock4.teco.com.ar. 3600 TXT "v=spf1 ip4:200.43.32.164 ip4:200.43.32.165 ip4:200.43.32.166 ip4:190.225.183.155 -all"
Authority
teco.com.ar. 300 NS gulp.arnet.com.ar.
teco.com.ar. 300 NS oktubre.arnet.com.ar.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0