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Data as of Nov 3, 2026

211.51.0.0/16

5 anonymizer addresses · <0.01% · VPN339 residential-proxy exits · 30 days

Korea Telecom

Announcement
this exact prefix
No RPKI
Announced by
AS4766
Type
Residential
99% of it

Residential-proxy exits

Proxy exits
339
0.52% of its addresses · 30 days
Always-on exits
15
4.4% of its exits
Spread
127 of 256
/24s with at least one exit
Providers
80
selling exits here
Oct 4, 2026 – Nov 2, 2026

Exits seen per day

50K observations
  • VPN · anonymizer
  • Residential
  • Business

/24s with the most always-on exits

/24Always-on exitsProxy exits
211.51.35.0/2416
211.51.120.0/2415
211.51.253.0/2414
211.51.105.0/2414
211.51.163.0/2414
211.51.79.0/2413
211.51.225.0/2413
211.51.197.0/2413
211.51.111.0/2412
211.51.207.0/2412
211.51.216.0/2412
211.51.159.0/2412
211.51.230.0/2411
211.51.132.0/2411
211.51.155.0/2411
211.51.93.0/24010
211.51.189.0/2407
211.51.249.0/2407
211.51.242.0/2406
211.51.56.0/2406
211.51.91.0/2406
211.51.121.0/2406
211.51.117.0/2405
211.51.168.0/2405

Proxy providers listing exits

  • 2Captcha
  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BottingTools
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • CoreProxy
  • Datarama
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • Geonode
  • GloryCloud
  • GoProxies
  • GonzoProxy
  • HydraProxy
  • IPCola
  • IPFly
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • LemonBright
  • LemonLabs
  • LemonPrime
  • LightningProxies
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • MoMoProxy
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PacketStream
  • PrivateByte
  • Proxio
  • Proxiware
  • Proxy-Cheap
  • Proxy-Seller
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • RainProxy
  • RapidProxy
  • Shifter
  • SpyderProxy
  • SwiftProxy
  • Thordata
  • ThunderProxy
  • TrustProxy
  • VantageProxies
  • VibeProxies
  • VitalExclusive
  • VitalProxy
IPv4 market

Path

1 · Holder
Korea Telecom
2 · Leased from
not leased
3 · Announced by
AS4766 Korea Telecom
since May 2005 · 21.5 yr ago
4 · Use
VPN servicesnamed VPN Gate
Residential

Operators, sellers and brokers

VPN services

NameParentIn 211.51.0.0/16/24s
VPN GateUniversity of Tsukuba
5<0.01%
5

Lineage

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

211.51.0.0/16

From the registry to its use

  1. Jan 14, 2000
    Route object
    AS4766 Korea Telecom
    RADB route object for AS4766 Korea Telecom, maintainer MAINT-AS4766
  2. Dec 16, 2002
    Route object
    AS18340 SBKorea
    RADB route object for AS18340 SBKorea, maintainer MAINT-AS3786
    211.51.40.0/22
  3. Dec 23, 2003
    Route object
    AS18340 SBKorea
    RADB route object for AS18340 SBKorea, maintainer MAINT-AS4766
    211.51.40.0/24
  4. Dec 23, 2003
    Route object
    AS18340 SBKorea
    RADB route object for AS18340 SBKorea, maintainer MAINT-AS4766
    211.51.41.0/24
  5. Dec 23, 2003
    Route object
    AS18340 SBKorea
    RADB route object for AS18340 SBKorea, maintainer MAINT-AS4766
    211.51.42.0/24
  6. Dec 23, 2003
    Route object
    AS18340 SBKorea
    RADB route object for AS18340 SBKorea, maintainer MAINT-AS4766
    211.51.43.0/24
  7. May 9, 2005– today
    Announced
    AS4766 Korea Telecom
    Internet provider
  8. today
    Registry record
    Korea Telecom
    ALLOCATED PORTABLE
    211.51.0.0/16
  9. today
    Used
    VPN Gate
    VPN

Announcements

More specific

Announcements inside

PrefixOriginTypeProxy exitsHolderRPKI
211.51.39.0/24
since May 2005
AS9852Business1Korea Telecom
211.51.48.0/24
since Jun 2020
AS4766ResidentialKorea Telecom
211.51.103.0/24
since Jul 2015
AS18314BusinessKorea Telecom
211.51.145.0/24
since Aug 2007
AS38427HostingKorea Telecom
211.51.255.0/25AS38402BusinessKorea Telecom

Composition

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

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses
TypeAddressesShareRanges
Residential64,63599%12
Business6400.98%3
Hosting2560.39%1
VPNanonymizer5<0.01%5

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS4766

KR
Name
Korea Telecom
Type
Internet provider
Registered
Apr 22, 1996
Domain
kt.com
Website
www.kt.com/eng/main.jsp
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1