详细英文注册信息如下：
Domain Name: 7h9.cn ROID: 20210508s10001s35974839-cn Domain Status: clientUpdateProhibited Domain Status: clientTransferProhibited Domain Status: clientHold Registrant: 蔡磊 Registrant Contact Email: seovpn@outlook.com Sponsoring Registrar: 阿里云计算有限公司（万网） Name Server: jm1.dns.com Name Server: jm2.dns.com Registration Time: 2021-05-08 04:02:13 Expiration Time: 2025-05-08 04:02:13 DNSSEC: unsigned