详细英文注册信息如下：
Domain Name: sihai.cn ROID: 20030409s10001s00468889-cn Domain Status: clientTransferProhibited Registrant: 蒋永超 Registrant Contact Email: 13380727923@189.cn Sponsoring Registrar: 厦门易名科技股份有限公司 Name Server: ns4.dns.com Name Server: ns3.dns.com Registration Time: 2003-04-09 18:11:11 Expiration Time: 2025-04-09 18:11:11 DNSSEC: unsigned