Data as of Nov 4, 2026
202.204.20.0/23
No anonymizer space · no proxy exits in 30 daysChina Education and Research Network Center · space held by China Education and Research Network
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Sep 18, 2026
from AS24350 CERNET2 IX at Beijing University of Posts and Telecommunications, after 6.9 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 202.204.0.0/14 since Jun 2026 | AS4538 | Business | 41 | China Education and Research Network | |
| 202.200.0.0/13 since May 2014 | AS4538 | Business | 479 3 always on | ||
| 202.192.0.0/12 since May 2005 | AS4538 | Business | 815 10 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
- Pattern
- Reactivated
- First seen
- Sep 2007
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 202.204.0.0/14
- Netname
- BJR-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
- Jun 4, 1996
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- ABUSE CERNETAP
- Handle
- AC1685-AP