It can be anything! An apex, subdomain, or even a URL.

Results for_netblocks.carrefour.com

Resolver

Location

TXT

Name	TTL	Value
_netblocks.carrefour.com	300	v=spf1 ip4:217.77.237.212 ip4:217.77.237.213 ip4:217.77.237.214 ip4:217.77.237.215 ip4:34.76.114.95 ip4:34.77.184.1 ip4:104.199.28.175 ip4:35.195.211.117 -all