Domains with DNS TXT v=spf1 include:secureserver.net exists:%{i}.mta.spf.extendcp.co.uk exists:%{i}.web.spf.extendcp.co.uk include:soverin.net -all

There are 3,310 domains that have DNS TXT set to v=spf1 include:secureserver.net exists:%{i}.mta.spf.extendcp.co.uk exists:%{i}.web.spf.extendcp.co.uk include:soverin.net -all. The top 50 records ordered by domain rank are listed below.