Question and response
Question
dig incoming.viettel.com.vn. TXT
Answer
incoming.viettel.com.vn. 86400 TXT "v=spf1 a -all"
Authority
viettel.com.vn. 86400 NS dns2.vietel.com.vn.
viettel.com.vn. 86400 NS dns1.vietel.com.vn.
Additional
dns1.vietel.com.vn. 86400 A 203.113.131.1
dns2.vietel.com.vn. 86400 A 203.113.188.2
dns1.vietel.com.vn. 86400 AAAA 2402:800:20ff:1111:0:0:0:1
dns2.vietel.com.vn. 86400 AAAA 2402:800:20ff:2222:0:0:0:1
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0