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lookup
CIDR:
211.90.72.0/21
ASN:
AS Number:
4837
AS Description: CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN
Network Address:
211.90.72.0
CIDR Size:
211.90.72.0/21 consists of 2097152 networks, each of it can hold 2048 hosts.