专业的域名信息查询网站（WHOIS）

eric2013

https://whois.net/
https://whois.aliyun.com/
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以查询www.baidu.com为例，查询的结果如下：
Whois Server Version 2.0

Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.

Server Name: BAIDU.COM.CN
Registrar: BEIJING INNOVATIVE LINKAGE TECHNOLOGY LTD. DBA DNS.COM.CN
Whois Server: whois.dns.com.cn
Referral URL: http://www.dns.com.cn

Server Name: BAIDU.COM.MORE.INFO.AT.WWW.BEYONDWHOIS.COM
IP Address: 203.36.226.2
Registrar: INSTRA CORPORATION PTY, LTD.
Whois Server: whois.instra.net
Referral URL: http://www.instra.com

Server Name: BAIDU.COM.S18.4BO.CN
Registrar: XIN NET TECHNOLOGY CORPORATION
Whois Server: whois.paycenter.com.cn
Referral URL: http://www.xinnet.com

Server Name: BAIDU.COM.ZZZZZ.GET.LAID.AT.WWW.SWINGINGCOMMUNITY.COM
IP Address: 69.41.185.203
Registrar: ENOM, INC.
Whois Server: whois.enom.com
Referral URL: http://www.enom.com

Server Name: BAIDU.COM.ZZZZZZ.COM.MORE.INFO.AT.WWW.BEYONDWHOIS.COM
IP Address: 203.36.226.2
Registrar: INSTRA CORPORATION PTY, LTD.
Whois Server: whois.instra.net
Referral URL: http://www.instra.com

Domain Name: BAIDU.COM
Registrar: MARKMONITOR INC.
Sponsoring Registrar IANA ID: 292
Whois Server: whois.markmonitor.com
Referral URL: http://www.markmonitor.com
Name Server: DNS.BAIDU.COM
Name Server: NS2.BAIDU.COM
Name Server: NS3.BAIDU.COM
Name Server: NS4.BAIDU.COM
Name Server: NS7.BAIDU.COM
Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Status: serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited
Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
Status: serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited
Updated Date: 10-sep-2015
Creation Date: 11-oct-1999
Expiration Date: 11-oct-2017

>>> Last update of whois database: Sat, 10 Jun 2017 10:16:37 GMT <<<