如何查询ip地址的AS自治域号码

linux下安装whois：
# yum -y install jwhois
查询命令：
# whois -h whois.cymru.com 8.8.8.8
[Querying whois.cymru.com]
[whois.cymru.com]
AS | IP | AS Name
15169 | 8.8.8.8 | GOOGLE - Google Inc.,US