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Data as of Nov 14, 2026

203.243.0.0/19

3 anonymizer addresses · 0.04% · VPN55 residential-proxy exits · 30 days

Korea Telecom

Announcement
203.243.0.0/18
No RPKI
Announced by
AS4766
Type
Residential
97% of it

Residential-proxy exits

Proxy exits
55
0.67% of its addresses · 30 days
Spread
20 of 32
/24s with at least one exit
Providers
71
selling exits here
Oct 15, 2026 – Nov 13, 2026

Exits seen per day

4.9K observations
  • VPN · anonymizer
  • Residential

/24s with the most always-on exits

/24Always-on exitsProxy exits
203.243.10.0/2405
203.243.19.0/2405
203.243.29.0/2404
203.243.4.0/2404
203.243.2.0/2404
203.243.20.0/2404
203.243.22.0/2403
203.243.18.0/2403
203.243.31.0/2403
203.243.23.0/2403
203.243.7.0/2403
203.243.16.0/2402
203.243.6.0/2402
203.243.5.0/2402
203.243.11.0/2402
203.243.28.0/2402
203.243.9.0/2401
203.243.21.0/2401
203.243.3.0/2401
203.243.8.0/2401

Proxy providers listing exits

  • 2Captcha
  • Ake.net
  • AnyIP
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • Datarama
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FloppyData
  • GSocks
  • Geonix
  • Geonode
  • GloryCloud
  • GonzoProxy
  • HideProxy
  • IPFly
  • IPMUSK
  • IPOasis
  • IPPeak
  • IPROCKET_BASIC
  • IPROCKET_PREMIUM
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • LemonBright
  • LightningProxies
  • LudaxProxy
  • MangoProxy
  • MoMoProxy
  • NextProxy
  • NodeProxy
  • NovaProxy
  • PacketStream
  • ProxiesVision
  • Proxiware
  • Proxy-Cheap
  • Proxy-Seller
  • Proxy302
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyStyler
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • Q2IP
  • RainProxy
  • SIMPLYNODE
  • Shifter
  • TORCHPROXIES_BASIC
  • TORCHPROXIES_X
  • Thordata
  • ThunderProxy
  • VantageProxies
  • VibeProxies
  • VitalExclusive
  • VitalProxy
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM
IPv4 market

Path

1 · Holder
Unnamed holder
2 · Leased from
not leased
3 · Announced by
AS4766 Korea Telecom
since Sep 2012 · 14.2 yr ago
4 · Use
VPN servicesnamed VPN Gate
Residential

Operators, sellers and brokers

VPN services

NameParentIn 203.243.0.0/19/24s
VPN GateUniversity of Tsukuba
30.04%
3

Announcements

More specific

Announcements inside

PrefixOriginTypeProxy exitsHolderRPKI
203.243.1.0/24
since Nov 2007
AS17841BusinessKorea Telecom
203.243.15.0/24
since Mar 2011
AS23575ResidentialKorea Telecom
203.243.16.0/24
since Mar 2011
AS23575Residential2Korea Telecom

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
203.243.0.0/221,024KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.4.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.5.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.6.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.7.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.8.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.9.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.10.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.11.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.12.0/221,024KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.16.0/221,024KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.20.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.21.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.22.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.23.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.24.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.25.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.26.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.27.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.28.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.29.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.30.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.31.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

8,192 addresses
TypeAddressesShareRanges
Residential7,93397%29
Business2563.1%1
VPNanonymizer30.04%3

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced 203.243.0.0/18

203.243.0.0/18

Routing history

Pattern
Stable
First seen
May 2005
Current origin since
Sep 2012 · 14 yr
Origin networks
2
Last change of origin
Sep 2012
Recorded history

History

Handoffs
1