Domains with DNS TXT v=spf1 a mx ip4:51.91.186.58 include:spf.npnservers.net ~all

There are 4 domains that have DNS TXT set to v=spf1 a mx ip4:51.91.186.58 include:spf.npnservers.net ~all. The top 4 records ordered by domain rank are listed below.

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