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Data as of Nov 14, 2026

203.243.0.0/18

4 anonymizer addresses · 0.02% · VPN108 residential-proxy exits · 30 days

Korea Telecom

Announcement
this exact prefix
No RPKI
Announced by
AS4766
Type
Residential
95% of it

Residential-proxy exits

Proxy exits
108
0.66% of its addresses · 30 days
Always-on exits
1
0.93% of its exits
Spread
39 of 64
/24s with at least one exit
Providers
88
selling exits here
Oct 15, 2026 – Nov 13, 2026

Exits seen per day

12K observations
  • VPN · anonymizer
  • Residential
  • Business

/24s with the most always-on exits

/24Always-on exitsProxy exits
203.243.58.0/2413
203.243.41.0/24013
203.243.63.0/2406
203.243.10.0/2405
203.243.19.0/2405
203.243.4.0/2404
203.243.43.0/2404
203.243.29.0/2404
203.243.2.0/2404
203.243.59.0/2404
203.243.20.0/2404
203.243.50.0/2403
203.243.18.0/2403
203.243.7.0/2403
203.243.35.0/2403
203.243.22.0/2403
203.243.23.0/2403
203.243.31.0/2403
203.243.11.0/2402
203.243.6.0/2402
203.243.5.0/2402
203.243.28.0/2402
203.243.34.0/2402
203.243.54.0/2402

Proxy providers listing exits

  • 2Captcha
  • Ake.net
  • AnyIP
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • DataImpulse
  • Datarama
  • EnigmaProxy
  • Evomi
  • FLEETPROXY
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • GeekProxy
  • Geonix
  • Geonode
  • GhostConnect
  • GloryCloud
  • GonzoProxy
  • HideProxy
  • IPFly
  • IPMUSK
  • IPOasis
  • IPPeak
  • IPROCKET_BASIC
  • IPROCKET_PREMIUM
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • KocerRoxy
  • LemonBright
  • LemonLabs
  • LightningProxies
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • MoMoProxy
  • NextProxy
  • NodeProxy
  • NovProxy
  • NovaProxy
  • PROXYLANE
  • PROXYON
  • PROXYSCRAPE
  • PSBProxy
  • PacketStream
  • PrivateByte
  • ProxiesVision
  • Proxiware
  • Proxy-Cheap
  • Proxy-Seller
  • Proxy302
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyStyler
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • Q2IP
  • RainProxy
  • SIMPLYNODE
  • SPYDERPROXY_PREMIUM
  • Shifter
  • TORCHPROXIES_BASIC
  • TORCHPROXIES_PREMIUM
  • 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 203.243.0.0/18/24s
VPN GateUniversity of Tsukuba
40.02%
4

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

203.243.0.0/18

From the registry to its use

  1. Jun 4, 2004
    Route object
    AS9318 SK Broadband Co Ltd
    REACH route object for AS9318 SK Broadband Co Ltd, maintainer MAINT-REACH-NOC
  2. Jun 4, 2004
    Route object
    AS9318 SK Broadband Co Ltd
    REACH route object for AS9318 SK Broadband Co Ltd, maintainer MAINT-REACH-NOC
    203.243.0.0/19
  3. Jun 4, 2004
    Route object
    AS9318 SK Broadband Co Ltd
    REACH route object for AS9318 SK Broadband Co Ltd, maintainer MAINT-REACH-NOC
    203.243.32.0/19
  4. May 9, 2005– Sep 8, 2012
    Announced
    AS9768 Korea Telecom
  5. Sep 5, 2012– today
    Announced
    AS4766 Korea Telecom
    Internet provider
  6. Sep 13, 2012
    Route object
    AS4766 Korea Telecom
    RADB route object for AS4766 Korea Telecom, maintainer MAINT-AS4766
  7. today
    Used
    VPN Gate
    VPN

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
203.243.39.0/24
since May 2025
AS4766ResidentialKorea Telecom
203.243.41.0/24
since Oct 2023
AS18034Business13Korea Telecom
203.243.42.0/24
since Oct 2023
AS18034BusinessKorea Telecom

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
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
203.243.32.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.33.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.34.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.35.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.36.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.37.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.38.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.39.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.40.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.41.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.42.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.43.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.44.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.45.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.46.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.47.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.48.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.49.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.50.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.51.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.52.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.53.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.54.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.55.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.56.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.57.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.58.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.59.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.60.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.61.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.62.0/24256KORNETKorea TelecomALLOCATED PORTABLE—hostmaster@nic.or.kr
203.243.63.0/24256KORNETKorea 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

16,384 addresses
TypeAddressesShareRanges
Residential15,61295%60
Business7684.7%3
VPNanonymizer40.02%4

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced this prefix

Summary

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