Data as of Nov 10, 2026
121.192.4.0/22
No anonymizer space · no proxy exits in 30 daysChina Education and Research Network Center · space held by China Education and Research Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.192.0.0/16 since Dec 2008 | AS4538 | Business | 2 | China Education and Research Network | |
| 121.192.0.0/15 since Feb 2007 | AS4538 | Business | 53 2 always on | ||
| 121.192.0.0/14 since Nov 2017 | AS4538 | Business | 81 2 always on |
Network & registry
Origin network
AS4538
CN
- Name
- China Education and Research Network Center
- Type
- Education
- Registered
- Aug 1, 2002
- Domain
- cernet.edu.cn
- Website
- www.edu.cn
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- First seen
- Before our records
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 121.
192. 0. 0/ 16 - Netname
- SHR-CERNET
- Registrant
- China Education and Research Network
- Registrant country
- CN
- Organization
- China Education and Research Network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 3, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Jul 11, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP