18.155.173.127
server-18-155-173-127.phx50.r.cloudfront.net
18.155.173.26
server-18-155-173-26.phx50.r.cloudfront.net
18.155.173.41
server-18-155-173-41.phx50.r.cloudfront.net
18.155.173.77
server-18-155-173-77.phx50.r.cloudfront.net

2600:9000:246b:1800:7:8fc7:5380:93a1
2600:9000:246b:4800:7:8fc7:5380:93a1
2600:9000:246b:a600:7:8fc7:5380:93a1
2600:9000:246b:c200:7:8fc7:5380:93a1
2600:9000:246b:c400:7:8fc7:5380:93a1
2600:9000:246b:c600:7:8fc7:5380:93a1
2600:9000:246b:ca00:7:8fc7:5380:93a1
2600:9000:246b:e00:7:8fc7:5380:93a1

cluster5a.us.messagelabs.com.
cluster5.us.messagelabs.com.