Whois server: whois.cnnic.net.cn Domain Name: doubleclick.cn ROID: 20050422s10001s08447303-cn Domain Status: clientDeleteProhibited Domain Status: clientUpdateProhibited Domain Status: clientTransferProhibited Registrant: Google LLC Registrant Contact Email: [email protected] Sponsoring Registrar: MarkMonitor Inc. Name Server: ns2.google.com Name Server: ns1.google.com Name Server: ns3.google.com Name Server: ns4.google.com Registration Time: 2005-04-22 19:36:52 Expiration Time: 2026-04-22 19:36:52 DNSSEC: unsigned