Data as of Nov 8, 2026
202.121.176.0/21
10 residential-proxy exits · 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
Recent change
New origin Sep 18, 2026
from AS24364 CERNET2 IX at Shanghai Jiaotong University, after 6.9 years unannounced
Residential-proxy exits
Proxy exits
10
0.49% of its addresses · 30 days
Always-on exits
1
10% of its exits
Spread
3 of 8
/24s with at least one exit
Providers
40
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
4.7K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 202.121.182.0/24 | 1 | 4 | |
| 202.121.180.0/24 | 0 | 4 | |
| 202.121.181.0/24 | 0 | 2 |
Proxy providers listing exits
- 2Captcha
- Ake.net
- BartProxies
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- EnigmaProxy
- FlashProxy
- FlexyProxies
- FloppyData
- GSocks
- Geonix
- GonzoProxy
- HydraProxy
- IPOasis
- IPPeak
- Infatica
- LemonLabs
- LemonPrime
- LightningProxies
- MangoProxy
- NodeMaven
- NodeProxy
- NovProxy
- NovaProxy
- PrivateByte
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyHat
- ProxyRack
- Proxyma
- RainProxy
- Shifter
- VantageProxies
- VibeProxies
- VitalData
- VitalProxy
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 202.121.0.0/16 since Oct 2019 | AS4538 | Business | 47 1 always on | China Education and Research Network | |
| 202.120.0.0/15 since May 2005 | AS4538 | Business | 378 9 always on | China Education and Research Network |
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 202.121.176.0/22 | AS4538 | Business | China Education and Research Network | ||
| 202.121.180.0/22 | AS4538 | Business | 10 1 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
- Reactivated
- First seen
- May 2005
- 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.
112. 0. 0 - 202. 121. 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
- Sep 3, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Sep 21, 1995
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP