详细英文注册信息如下：
Domain Name: 6728.com.cn ROID: 20250113s10011s99384371-cn Domain Status: ok Registrant: 张翠芬 Registrant Contact Email: b9zuu7y@21cn.com Sponsoring Registrar: 阿里云计算有限公司（万网） Name Server: now2.dns.com Name Server: now1.dns.com Registration Time: 2025-01-13 04:04:09 Expiration Time: 2026-01-13 04:04:09 DNSSEC: unsigned