Domain Name: tsinghua.cn ROID: 20030310s10001s00023621-cn Domain Status: ok Registrant: 赛尔网络有限公司 Registrant Contact Email: liyue@cernet.com Sponsoring Registrar: 赛尔网络有限公司 Name Server: dns.tsinghua.edu.cn Name Server: dns2.tsinghua.edu.cn Registration Time: 2003-03-17 12:20:05 Expiration Time: 2025-03-17 12:48:36 DNSSEC: unsigned