你们遇到吗？ping 不同

踏浪

C:\Documents and Settings\jiang>ping www.163.com
Pinging www.cache.split.netease.com [220.181.28.52] with 32 bytes of data:

Reply from 220.181.28.52: bytes=32 time=72ms TTL=52
Reply from 220.181.28.52: bytes=32 time=72ms TTL=52
Reply from 220.181.28.52: bytes=32 time=75ms TTL=52
Reply from 220.181.28.52: bytes=32 time=74ms TTL=52
Ping statistics for 220.181.28.52:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 72ms, Maximum = 75ms, Average = 73ms

C:\Documents and Settings\jiang>ping www.baidu.com
Pinging www.a.shifen.com [220.181.6.6] with 32 bytes of data:
Reply from 220.181.6.6: bytes=32 time=72ms TTL=53
Reply from 220.181.6.6: bytes=32 time=72ms TTL=53
Reply from 220.181.6.6: bytes=32 time=75ms TTL=53
Reply from 220.181.6.6: bytes=32 time=73ms TTL=53
Ping statistics for 220.181.6.6:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 72ms, Maximum = 75ms, Average = 73ms

红字部分，为什么域名不同，请高手赐教，谢谢！！！！