Data as of Nov 10, 2026
210.28.5.0/24
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
RPKI valid
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Sep 18, 2026
from AS4538 China Education and Research Network Center, after 4.2 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 210.28.0.0/20 | AS4538 | Business | 8 | China Education and Research Network | |
| 210.28.0.0/14 since May 2005 | AS4538 | Business | 174 5 always on | China Education and Research Network |
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
- Stable
- First seen
- May 2022
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 210.28.5.0/24 | AS4538 | /24 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 210.
26. 0. 0 - 210. 31. 255. 255 - Netname
- CERNET-CN
- 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
- Oct 20, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Aug 31, 1998
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP