Question and response
Question
dig _spf.tld-mx.com. TXT
Answer
_spf.tld-mx.com. 3600 TXT "v=spf1 include:_ip4netblock.tld-mx.com include:_ip6netblock.tld-mx.com ~all"
Authority
tld-mx.com. 43200 NS ns1.tld-nscloud.com.
tld-mx.com. 43200 NS ns4.tld-nscloud.net.
tld-mx.com. 43200 NS ns2.tld-nscloud.net.
tld-mx.com. 43200 NS ns3.tld-nscloud.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0