Question and response
Question
dig external2.mastercard.com. TXT
Answer
external2.mastercard.com. 3600 TXT "v=spf1 ip4:216.52.6.88 ip4:216.52.6.188 ip4:216.52.7.88 ip4:216.52.7.188 ip4:149.72.154.153 ip4:104.245.209.208 ip4:149.72.160.211 ip4:208.254.18.225 ip4:204.132.63.45 ip4:204.98.15.21" " ip4:40.72.152.28 ip4:40.70.228.62 ip4:8.39.163.29 ip4:207.45.164.0/24 ip4:216.52.6.81 ip4:216.52.6.189 ip4:20.72.90.255 ip4:20.203.84.84 ip4:209.177.165.160 ip4:209.177.165.161 ip4:198.245.83.237 ip4:198.245.84.88 ip4:136.147.138.171" " ip4:52.137.74.60 ip4:52.137.74.61 ip4:52.137.74.62 ip4:52.137.74.63 ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0