13.227.21.151
server-13-227-21-151.sfo20.r.cloudfront.net
13.227.21.174
server-13-227-21-174.sfo20.r.cloudfront.net
13.227.21.28
server-13-227-21-28.sfo20.r.cloudfront.net
13.227.21.33
server-13-227-21-33.sfo20.r.cloudfront.net

2600:9000:2202:1000:1b:ddbc:8e00:21
2600:9000:2202:1e00:1b:ddbc:8e00:21
2600:9000:2202:6c00:1b:ddbc:8e00:21
2600:9000:2202:7000:1b:ddbc:8e00:21
2600:9000:2202:8200:1b:ddbc:8e00:21
2600:9000:2202:a400:1b:ddbc:8e00:21
2600:9000:2202:e400:1b:ddbc:8e00:21
2600:9000:2202:f200:1b:ddbc:8e00:21

mx1.forwardmx.io.
mx2.forwardmx.io.