Data as of Nov 8, 2026
121.193.0.0/16
52 residential-proxy exits · 30 daysChina Education and Research Network Center · space held by China Education and Research Network
Residential-proxy exits
Proxy exits
52
0.08% of its addresses · 30 days
Always-on exits
2
3.8% of its exits
Spread
7 of 256
/24s with at least one exit
Providers
39
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
7.8K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 121.193.129.0/24 | 1 | 31 | |
| 121.193.172.0/24 | 1 | 4 | |
| 121.193.182.0/24 | 0 | 8 | |
| 121.193.184.0/24 | 0 | 4 | |
| 121.193.161.0/24 | 0 | 3 | |
| 121.193.165.0/24 | 0 | 1 | |
| 121.193.191.0/24 | 0 | 1 |
Proxy providers listing exits
- Ake.net
- BartProxies
- BirdProxies
- ByteProxies
- Byteful
- CliProxy
- EnigmaProxy
- FlashProxy
- FlexyProxies
- GSocks
- Geonix
- GonzoProxy
- IPOasis
- IPPeak
- IPRoyal
- Infatica
- LemonLabs
- LemonPrime
- LightningProxies
- MangoProxy
- NextProxy
- NodeMaven
- NodeProxy
- NovProxy
- NovaProxy
- PROXYWING_BASIC
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyHat
- ProxyRack
- Proxyma
- RainProxy
- SPYDERPROXY_PREMIUM
- Shifter
- VantageProxies
- VibeProxies
- VitalExclusive
- VitalProxy
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 121.192.0.0/15 since Feb 2007 | AS4538 | Business | 54 2 always on | |
| 121.192.0.0/14 since Nov 2017 | AS4538 | Business | 84 2 always on |
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.193.64.0/20 | AS4538 | Business | China Education and Research Network | ||
| 121.193.80.0/20 | AS4538 | Business | China Education and Research Network | ||
| 121.193.96.0/22 | AS4538 | Business | China Education and Research Network | ||
| 121.193.128.0/20 | AS4538 | Business | 31 1 always on | China Education and Research Network | |
| 121.193.144.0/21 since Sep 18, 2026 | AS4538 | Business | China Education and Research Network | ||
| 121.193.160.0/19 | AS4538 | Business | 21 1 always on | China Education and Research Network | |
| 121.193.192.0/20 | AS4538 | Business | China Education and Research Network | ||
| 121.193.208.0/21 | AS4538 | Business | China Education and Research Network | ||
| 121.193.216.0/23 | AS4538 | Business | China Education and Research Network | ||
| 121.193.221.0/24 | AS4538 | Business | China Education and Research Network | ||
| 121.193.222.0/24 | AS4538 | Business | China Education and Research Network | ||
| 121.193.224.0/20 | AS4538 | Business | China Education and Research Network | ||
| 121.193.240.0/21 | AS4538 | Business | China Education and Research Network | ||
| 121.193.248.0/21 | AS4538 | Business | 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
- Feb 2007
- Current origin since
- Feb 2007 · 20 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 121.
193. 0. 0/ 16 - 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
- Jul 17, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP