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InternetData
IPv4 address

223.2.178.21

An address in Shanghai, China, used by China Education and Research Network, announced by China Education and Research Network Center (AS4538). None of our anonymity, network or probe databases holds it.

6 of 21 address-keyed databases hold it

Summary
Company
China Education and Research Network
Registered to
China Education and Research Network
Network type
Education
Abuse contact
abuse@cernet.edu.cn
Anycast
No

Anonymity

Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.

0 of 7 hold it

Ownership

Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.

4 of 6 hold it
Company
China Education and Research Network
Type
Education
Registered in
China
AS number
AS4538
Name
China Education and Research Network Center
RPKI
valid
Type
Education
Domain
cernet.edu.cn
Registered in
China
Name
China Education and Research Network
Handle
NJR-CERNET
Status
ALLOCATED PORTABLE
Registry
apnic
Domain
cernet.edu.cn
Name
ABUSE CERNETAP
Phone
+86-10-62784301
Address
Network Center,, FIT-3-220, Tsinghua Univ, Beijing 100084, China
Network
223.2.0.0-223.3.255.255
Not seen inIP RWHOISIP RDNS

Geolocation

Where the address is, and what that place uses.

2 of 2 hold it
City
Shanghai
Region
Shanghai
Postal code
200000
Country
China
Continent
Asia
Timezone
Asia/Shanghai
Currency
CNY
Name
Yuan Renminbi
Symbol
CN¥

Network

What kind of network it is on: a mobile carrier, an anycast service, a CDN edge.

0 of 3 hold it

Probe

What our own internet-wide measurement found listening on it.

0 of 3 hold it
00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.

01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell — priced by scope, not by seat.
Annual terms, a named contact, and flexible payment terms — monthly, quarterly or yearly.