Question and response
Question
dig _spf.sendgrid.kubra.com. TXT
Answer
_spf.sendgrid.kubra.com. 1800 TXT "v=spf1 ip4:50.31.52.45 ip4:50.31.55.13 ip4:149.72.23.134 ip4:149.72.49.132 ip4:149.72.112.243 ip4:149.72.112.244 ip4:149.72.124.152 ip4:149.72.155.9 ip4:149.72.164.209 ip4:149.72.170.49 ip4:149.72.225.251 ip4:159.183.107.58 ip4:159.183.114.121 ip4:159.183" ".121.172 ip4:159.183.134.150 ip4:159.183.146.200 ip4:159.183.161.128 ip4:159.183.175.238 ip4:167.89.24.30 ip4:167.89.25.120 ip4:167.89.41.49 ip4:167.89.41.53 ip4:167.89.84.34 ip4:167.89.99.168 ip4:198.37.158.181"
Authority
kubra.com. 86400 NS pdns112.ultradns.biz.
kubra.com. 86400 NS pdns112.ultradns.com.
kubra.com. 86400 NS pdns112.ultradns.net.
kubra.com. 86400 NS pdns112.ultradns.org.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0