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Data as of Nov 9, 2026

221.152.0.0/13

21 anonymizer addresses · <0.01% · VPN

Korea Telecom

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

Residential-proxy exits

Proxy exits
3,585
0.68% of its addresses · listed by providers
Always-on exits
155
4.3% of its exits
Spread
1,416 of 2,048
/24s with at least one exit
Providers
117
selling exits here

/24s with the most always-on exits

/24Always-on exitsProxy exits
221.158.190.0/24511
221.153.193.0/2424
221.158.75.0/2424
221.158.44.0/2423
221.157.238.0/2418
221.156.46.0/2418
221.158.45.0/2417
221.157.202.0/2417
221.159.61.0/2417
221.158.3.0/2417
221.158.85.0/2417
221.157.159.0/2416
221.154.66.0/2416
221.158.203.0/2416
221.156.100.0/2415
221.153.94.0/2415
221.154.91.0/2415
221.158.94.0/2415
221.156.159.0/2415
221.153.198.0/2415
221.156.141.0/2415
221.158.216.0/2415
221.159.128.0/2415
221.157.46.0/2415

Proxy providers listing exits

  • 2Captcha
  • 711Proxy
  • 9Proxy
  • ASHBURNPROXIES
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • Bright Data
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • CoreProxy
  • DataImpulse
  • Datarama
  • Decodo
  • EVOPROXY
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FLEETPROXY
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • Geonode
  • GhostConnect
  • GloryCloud
  • GoProxies
  • GonzoProxy
  • HideProxy
  • HydraProxy
  • IPCola
  • IPFly
  • IPMUSK
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • KocerRoxy
  • Kookey
  • LemonBright
  • LemonLabs
  • LemonPrime
  • LightningProxies
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • MarsProxies
  • Maskify
  • MoMoProxy
  • NSocks
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PROXYON
  • PROXYSCRAPE
  • PROXYWING_BASIC
  • PacketStream
  • PrivateByte
  • Proxies.fo
  • ProxiesVision
  • Proxiware
  • Proxmint
  • Proxy-Cheap
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyStyler
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • QUANTICDATA
  • RH7Proxy
  • RainProxy
  • RapidProxy
  • RealProxy
  • ResiProxies
  • RoamProxy
  • RolaProxy
  • SPYDERPROXY_BASIC
  • SPYDERPROXY_PREMIUM
  • Shifter
  • Smartproxy
  • SpyderProxy
  • StrikeProxy
  • SwiftProxy
  • TalorData
  • Thordata
  • ThunderProxy
  • TrueProxies
  • TrustProxy
  • VantageProxies
  • VibeProxies
  • VitalData
  • VitalExclusive
  • VitalProxy
  • YumiProxy
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM
IPv4 market

Path

1 · Holder
Korea Telecom
2 · Leased from
not leased
3 · Announced by
AS4766 Korea Telecom
since Dec 2009 · 16.9 yr ago
4 · Use
VPN servicesnamed VPN Gate
Residential

Operators, sellers and brokers

VPN services

NameParentIn 221.152.0.0/13/24s
VPN GateUniversity of Tsukuba
21<0.01%
21

Lineage

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

221.152.0.0/13

From the registry to its use

  1. Jun 20, 2003
    Route object
    AS23759 TechnoMart Information Communication Company
    RADB route object for AS23759 TechnoMart Information Communication Company, maintainer MAINT-AS3786
    221.157.116.0/23
  2. May 9, 2005– today
    Announced
    AS4766 Korea Telecom
    as part of 221.144.0.0/12
    221.144.0.0/12
  3. Jan 9, 2006
    Route object
    AS9962 Sunchon National University
    RADB route object for AS9962 Sunchon National University, maintainer MAINT-AS3786
    221.156.209.0/24
  4. Jan 9, 2006
    Route object
    AS9962 Sunchon National University
    RADB route object for AS9962 Sunchon National University, maintainer MAINT-AS3786
    221.156.227.0/24
  5. Dec 8, 2009– today
    Announced
    AS4766 Korea Telecom
    Internet provider
  6. May 29, 2013
    Route object
    AS4793 Hyundai Heavy Industries
    RADB route object for AS4793 Hyundai Heavy Industries, maintainer MAINT-AS9318
    221.152.13.0/24
  7. Dec 11, 2018
    Route object
    AS17605 KTNG Coporation
    RADB route object for AS17605 KTNG Coporation, maintainer MAINT-AS9318
    221.158.107.0/24
  8. Dec 11, 2018
    Route object
    AS17605 KTNG Coporation
    RADB route object for AS17605 KTNG Coporation, maintainer MAINT-AS9318
    221.158.142.0/24
  9. today
    Registry record
    Korea Telecom
    ALLOCATED PORTABLE
    221.144.0.0/12
  10. today
    Used
    VPN Gate
    VPN

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
221.144.0.0/12
since May 2005
AS4766Residential6,557
285 always on
Korea Telecom
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
221.153.249.0/24
since Nov 2008
AS4766Residential1Korea Telecom
221.154.82.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.83.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.84.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.85.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.86.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.87.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.88.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.154.89.0/24
since Jan 2015
AS4766Residential13Korea Telecom
221.154.90.0/24
since Jan 2015
AS4766ResidentialKorea Telecom
221.157.100.0/22
since Nov 2008
AS4766ResidentialKorea Telecom
221.157.104.0/21
since Nov 2008
AS4766ResidentialKorea Telecom
221.157.112.0/22
since Nov 2008
AS4766ResidentialKorea Telecom
221.157.116.0/24
since Nov 2008
AS4766ResidentialKorea Telecom
221.157.125.0/24
since Jan 2026
AS152232HostingKorea Telecom
221.157.126.0/24
since Jan 2010
AS4766ResidentialKorea Telecom
221.157.127.0/24
since Jan 2010
AS4766ResidentialKorea Telecom
221.157.128.0/23
since Nov 2008
AS4766ResidentialKorea Telecom
221.158.73.0/24
since May 2005
AS17576BusinessKorea Telecom
221.159.130.0/24
since Dec 2008
AS4766ResidentialKorea Telecom
221.159.186.0/24
since Dec 2008
AS4766ResidentialKorea Telecom
221.159.187.0/24
since Dec 2008
AS4766ResidentialKorea Telecom
221.159.210.0/24
since Jan 2012
AS55622BusinessKorea Telecom

Composition

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

Announced space

Address share

Announced space

Types across the prefix

524,288 addresses
TypeAddressesShareRanges
Residential523,499>99%50
Business5120.10%2
Hosting2560.05%1
VPNanonymizer21<0.01%21

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