Domain Name: combinatorics.net.cn ROID: 20021209s10021s00006464-cn Domain Status: ok Registrant: 于名飞 Registrant Contact Email: yumingfei@126.com Sponsoring Registrar: 阿里云计算有限公司（万网） Name Server: dns1.hichina.com Name Server: dns2.hichina.com Registration Time: 1999-11-06 00:00:00 Expiration Time: 2024-11-06 00:00:00 DNSSEC: unsigned
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Last modified : 2023-06-09 02:56:49