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

Results fornetblocks.myhost.ro

Resolver

Location

TXT

Name	TTL	Value
netblocks.myhost.ro	7200	v=spf1 ip4:46.102.236.0/24 ip4:85.9.45.0/24 ip4:193.143.120.0/24 ip4:195.250.53.0/24 ip4:5.35.208.160/28 ip4:85.9.56.192/28 ip4:86.105.9.176/28 include:_nb1.myhost.ro include:_nb2.myhost.ro -all