$ host ns1.microsoftinternetsafety.net
ns1.microsoftinternetsafety.net has address 199.2.137.250
$ host ns1.msft.net
ns1.msft.net has address 65.55.37.62
ns1.msft.net has IPv6 address 2a01:111:2005::1:1
$
$ host ns1.microsoftinternetsafety.net
ns1.microsoftinternetsafety.net has address 199.2.137.250
$ host ns1.msft.net
ns1.msft.net has address 65.55.37.62
ns1.msft.net has IPv6 address 2a01:111:2005::1:1
$