详细英文注册信息如下：
Domain Name: cydu.cn ROID: 20241104s10001s61770813-cn Domain Status: ok Registrant: 周子琪 Registrant Contact Email: wuapp8168@gmail.com Sponsoring Registrar: 北京网尊科技有限公司 Name Server: dm2.dns.com Name Server: dm1.dns.com Registration Time: 2024-11-04 13:46:37 Expiration Time: 2025-11-04 13:46:37 DNSSEC: unsigned