Question and response
Question
dig spf.swisscom.com. TXT
Answer
spf.swisscom.com. 3600 TXT "v=spf1 ip4:138.188.176.0/26 ip4:138.188.176.128/26 ip4:138.188.166.96/27 ~all"
Authority
swisscom.com. 3600 NS dns1.swisscom.com.
swisscom.com. 3600 NS dns2.swisscom.com.
swisscom.com. 3600 NS dns3.swisscom.com.
Additional
dns1.swisscom.com. 3600 A 138.190.34.196
dns2.swisscom.com. 3600 A 138.190.34.204
dns3.swisscom.com. 3600 A 193.222.76.54
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0