C:\>ping mx1.qq.com
Pinging mx1.qq.com [119.147.10.124] with 32 bytes of data:
Reply from 119.147.10.124: bytes=32 time=74ms TTL=55
Reply from 119.147.10.124: bytes=32 time=71ms TTL=55
Reply from 119.147.10.124: bytes=32 time=74ms TTL=55
Reply from 119.147.10.124: bytes=32 time=71ms TTL=55
Ping statistics for 119.147.10.124:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 71ms, Maximum = 74ms, Average = 72ms
C:\>ping mx2.qq.com
Pinging mx2.qq.com [119.147.10.216] with 32 bytes of data:
Reply from 119.147.10.216: bytes=32 time=64ms TTL=55
Reply from 119.147.10.216: bytes=32 time=63ms TTL=55
Reply from 119.147.10.216: bytes=32 time=63ms TTL=55
Reply from 119.147.10.216: bytes=32 time=63ms TTL=55
Ping statistics for 119.147.10.216:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 63ms, Maximum = 64ms, Average = 63ms
Non-authoritative answer:
qq.com MX preference = 10, mail exchanger = mx1.qq.com
qq.com MX preference = 5, mail exchanger = mx2.qq.com
mx1.qq.com internet address = 58.251.149.195
mx1.qq.com internet address = 58.251.149.196
mx1.qq.com internet address = 58.251.149.197
mx1.qq.com internet address = 58.251.149.187
mx1.qq.com internet address = 58.251.149.188
mx1.qq.com internet address = 58.251.149.189
mx1.qq.com internet address = 58.251.149.190
mx1.qq.com internet address = 58.251.149.191
mx1.qq.com internet address = 58.251.149.192
mx1.qq.com internet address = 58.251.149.193
mx1.qq.com internet address = 58.251.149.194
mx2.qq.com internet address = 58.251.149.191
mx2.qq.com internet address = 58.251.149.192
mx2.qq.com internet address = 58.251.149.193
mx2.qq.com internet address = 58.251.149.194
mx2.qq.com internet address = 58.251.149.195
mx2.qq.com internet address = 58.251.149.196
mx2.qq.com internet address = 58.251.149.197
mx2.qq.com internet address = 58.251.149.187
mx2.qq.com internet address = 58.251.149.188
mx2.qq.com internet address = 58.251.149.189
mx2.qq.com internet address = 58.251.149.190