IP range details
222.201.152.0/21
CERNET-CN
Summary
AS Number
4538
Country
China
Name
CERNET-CN
Description
CERNET-CN
IP Addresses
2048
Parent Prefix
RIR
APNIC
Allocation Status
Inactive
Allocation Date
7th July 2004
Announcing ASNs
Announced PrefixDescriptionCountry
4538CERNET-CNCN
What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
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