English
IP range details
121.251.232.0/23
China Education and Research Network (CERNET)
Summary
AS Number
138371
Country
China
Name
China Education and Research Network (CERNET)
Description
China Education and Research Network (CERNET)
IP Addresses
512
Parent Prefix
RIR
APNIC
Allocation Status
Inactive
Allocation Date
18th September 2006
Announcing ASNs
| Announced Prefix | Description | Country |
|---|---|---|
| 138371 | China Education and Research Network (CERNET) | CN |
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.
