Question and response
Question
dig imismailcenter.com. TXT
Answer
imismailcenter.com. 3600 TXT "v=spf1 ip4:167.89.57.164 ip4:159.183.72.192 ip4:159.183.72.193 include:sendgrid.net -all "
Authority
imismailcenter.com. 86400 NS pdns1.ultradns.net.
imismailcenter.com. 86400 NS pdns2.ultradns.net.
imismailcenter.com. 86400 NS pdns3.ultradns.org.
imismailcenter.com. 86400 NS pdns4.ultradns.org.
imismailcenter.com. 86400 NS pdns5.ultradns.info.
imismailcenter.com. 86400 NS pdns6.ultradns.co.uk.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0