Domains with DNS TXT v=spf1 mx a a:_spf.h1.a1center.net a:_spf.gen.a1center.net ~all
There are 479 domains that have DNS TXT set to v=spf1 mx a a:_spf.h1.a1center.net a:_spf.gen.a1center.net ~all. The top 50 records ordered by domain rank are listed below.