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Data as of Nov 11, 2026

121.192.0.0/14

No anonymizer space

China Education and Research Network Center

Announcement
this exact prefix
No RPKI
Announced by
AS4538
Type
Business

Residential-proxy exits

Proxy exits
83
0.03% of its addresses · listed by providers
Always-on exits
1
1.2% of its exits
Spread
14 of 1,024
/24s with at least one exit
Providers
43
selling exits here

/24s with the most always-on exits

/24Always-on exitsProxy exits
121.193.129.0/24132
121.195.188.0/24025
121.193.182.0/2406
121.193.172.0/2404
121.193.184.0/2404
121.193.161.0/2404
121.193.160.0/2401
121.193.165.0/2401
121.192.174.0/2401
121.193.191.0/2401
121.195.162.0/2401
121.195.167.0/2401
121.195.172.0/2401
121.192.185.0/2401

Proxy providers listing exits

  • 2Captcha
  • Ake.net
  • BartProxies
  • BirdProxies
  • BottingTools
  • ByteProxies
  • Byteful
  • CliProxy
  • EnigmaProxy
  • FlashProxy
  • FlexyProxies
  • GSocks
  • Geonix
  • GonzoProxy
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • LemonLabs
  • LemonPrime
  • LightningProxies
  • MangoProxy
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • PROXYSCRAPE
  • PROXYWING_BASIC
  • Proxiware
  • Proxy-Seller
  • ProxyEmpire
  • ProxyHat
  • ProxyRack
  • Proxyma
  • QUANTICDATA
  • RainProxy
  • SPYDERPROXY_PREMIUM
  • Shifter
  • VantageProxies
  • VibeProxies
  • VitalExclusive
  • VitalProxy

Announcements

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

Arrived
PrefixOriginTypeProxy exitsHolderRPKI
121.192.0.0/15
since Feb 2007
AS4538Business55
1 always on
121.192.0.0/16
since Dec 2008
AS4538Business2China Education and Research Network
121.192.0.0/24AS4538BusinessChina Education and Research Network
121.192.2.0/24AS4538BusinessChina Education and Research Network
121.192.3.0/24AS4538BusinessChina Education and Research Network
121.192.4.0/22AS4538BusinessChina Education and Research Network
121.192.8.0/24AS4538BusinessChina Education and Research Network
121.192.9.0/24AS4538BusinessChina Education and Research Network
121.192.11.0/24AS4538BusinessChina Education and Research Network
121.192.12.0/24AS4538BusinessChina Education and Research Network
121.192.13.0/24AS4538BusinessChina Education and Research Network
121.192.16.0/21AS4538BusinessChina Education and Research Network
121.192.24.0/22
since Sep 18, 2026
AS4538BusinessChina Education and Research Network
121.192.30.0/23AS4538BusinessChina Education and Research Network
121.192.32.0/22AS4538BusinessChina Education and Research Network
121.192.36.0/22AS4538BusinessChina Education and Research Network
121.192.40.0/22AS4538BusinessChina Education and Research Network
121.192.44.0/22AS4538BusinessChina Education and Research Network
121.192.48.0/23AS4538BusinessChina Education and Research Network
121.192.50.0/23AS4538BusinessChina Education and Research Network
121.192.52.0/23AS4538BusinessChina Education and Research Network
121.192.56.0/22AS4538BusinessChina Education and Research Network
121.192.60.0/22AS4538BusinessChina Education and Research Network
121.192.64.0/20AS4538BusinessChina Education and Research Network
121.192.128.0/24AS4538BusinessChina Education and Research Network
121.192.129.0/24AS4538BusinessChina Education and Research Network
121.192.130.0/23AS4538BusinessChina Education and Research Network
121.192.132.0/24AS4538BusinessChina Education and Research Network
121.192.134.0/24AS4538BusinessChina Education and Research Network
121.192.137.0/24AS4538BusinessChina Education and Research Network
121.192.138.0/24AS4538BusinessChina Education and Research Network
121.192.160.0/19
since Sep 18, 2026
AS4538Business2China Education and Research Network
121.192.192.0/18AS4538BusinessChina Education and Research Network
121.193.0.0/16
since Feb 2007
AS4538Business53
1 always on
China Education and Research Network
121.193.64.0/20AS4538BusinessChina Education and Research Network
121.193.80.0/20AS4538BusinessChina Education and Research Network
121.193.96.0/22AS4538BusinessChina Education and Research Network
121.193.128.0/20AS4538Business32
1 always on
China Education and Research Network
121.193.144.0/21
since Sep 18, 2026
AS4538BusinessChina Education and Research Network
121.193.160.0/19AS4538Business21China Education and Research Network
121.193.192.0/20AS4538BusinessChina Education and Research Network
121.193.208.0/21AS4538BusinessChina Education and Research Network
121.193.216.0/23AS4538BusinessChina Education and Research Network
121.193.221.0/24AS4538BusinessChina Education and Research Network
121.193.222.0/24AS4538BusinessChina Education and Research Network
121.193.224.0/20AS4538BusinessChina Education and Research Network
121.193.240.0/21AS4538BusinessChina Education and Research Network
121.193.248.0/21AS4538BusinessChina Education and Research Network
121.194.0.0/15
since Oct 2006
AS4538Business28China Education and Research Network
121.194.0.0/20
since Sep 18, 2026
AS4538BusinessChina Education and Research Network
121.194.4.0/24AS4538BusinessChina Education and Research Network
121.194.16.0/20AS4538BusinessChina Education and Research Network
121.194.32.0/20AS4538BusinessChina Education and Research Network
121.194.48.0/20AS4538BusinessChina Education and Research Network
121.194.64.0/20AS4538BusinessChina Education and Research Network
121.194.80.0/21AS4538BusinessChina Education and Research Network
121.194.88.0/22AS4538BusinessChina Education and Research Network
121.194.92.0/22AS4538BusinessChina Education and Research Network
121.194.96.0/20AS4538BusinessChina Education and Research Network
121.194.112.0/20AS4538BusinessChina Education and Research Network
121.194.144.0/20AS4538BusinessChina Education and Research Network
121.194.167.0/24AS4538BusinessChina Education and Research Network
121.194.172.0/22AS4538BusinessChina Education and Research Network
121.194.172.0/23AS4538BusinessChina Education and Research Network
121.194.174.0/23AS4538BusinessChina Education and Research Network
121.194.176.0/20
since May 2026
AS4538BusinessChina Education and Research Network
121.194.192.0/19AS4538BusinessChina Education and Research Network
121.194.224.0/19AS4538BusinessChina Education and Research Network
121.195.12.0/23AS4538BusinessChina Education and Research Network
121.195.14.0/23AS4538BusinessChina Education and Research Network
121.195.16.0/20AS4538BusinessChina Education and Research Network
121.195.32.0/19AS4538BusinessChina Education and Research Network
121.195.96.0/20AS4538BusinessChina Education and Research Network
121.195.112.0/23AS4538BusinessChina Education and Research Network
121.195.114.0/24AS4538BusinessChina Education and Research Network
121.195.128.0/19AS4538BusinessChina Education and Research Network
121.195.160.0/20AS4538Business3China Education and Research Network
121.195.180.0/22AS4538BusinessChina Education and Research Network
121.195.186.0/24AS4538BusinessChina Education and Research Network
121.195.188.0/23AS4538Business25China Education and Research Network
121.195.192.0/19AS4538BusinessChina Education and Research Network
121.195.224.0/20AS4538BusinessChina Education and Research Network
121.195.240.0/20AS4538BusinessChina Education and Research Network

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
121.192.0.0/1665,536SHR-CERNETChina Education and Research NetworkALLOCATED PORTABLESep 4, 2008abuse@cernet.edu.cn
121.193.0.0/1665,536BJR-CERNETChina Education and Research NetworkALLOCATED PORTABLESep 4, 2008abuse@cernet.edu.cn
121.194.0.0/15131,072BJR-CERNETChina Education and Research NetworkALLOCATED PORTABLESep 4, 2008abuse@cernet.edu.cn

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern
Stable
First seen
Nov 2017
Current origin since
Nov 2017 · 9.0 yr
Origin networks
1