I don't think the regexp from hell that sorts out known end-user / dynamic pools patters works correctly for hughes.net satellite internet customers, as shown in this log entry. This is an ISP is using a large server farm that takes forever to get whitelisted, if ever...
sqlgrey: grey: identified dynamic pattern (last IP byte): smtprelay0148.b.hostedemail.com, 64.98.42.148: Using full IP.