_spf.gigtel.com has no CNAME records.
Question and response
Question
dig _spf.gigtel.com. NS
Answer
The response has no answer records.
Authority
gigtel.com. 1729 SOA ns1.ccrtc.com. admin.gigtel.com. 2026021001 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0