LAYER3 INTEL
Get started
Sign in
Data as of Nov 7, 2026

121.144.0.0/12

37 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
6,708
0.64% of its addresses · listed by providers
Always-on exits
287
4.3% of its exits
Spread
2,744 of 4,096
/24s with at least one exit
Providers
111
selling exits here

/24s with the most always-on exits

/24Always-on exitsProxy exits
121.152.191.0/24312
121.152.101.0/2427
121.147.83.0/2427
121.150.64.0/2425
121.149.229.0/2425
121.149.103.0/2425
121.153.13.0/2424
121.145.115.0/2424
121.147.241.0/2424
121.156.177.0/2424
121.158.27.0/2423
121.147.211.0/2423
121.157.205.0/2423
121.157.216.0/2423
121.151.146.0/2423
121.157.139.0/2422
121.151.210.0/2422
121.156.80.0/2422
121.154.255.0/24112
121.158.213.0/24110
121.152.84.0/2419
121.151.238.0/2418
121.152.138.0/2418
121.152.68.0/2417

Proxy providers listing exits

  • 2Captcha
  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • Bright Data
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • CoreProxy
  • DataImpulse
  • Datarama
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • Geonode
  • GhostConnect
  • GloryCloud
  • GoProxies
  • GonzoProxy
  • HideProxy
  • HydraProxy
  • IPCola
  • IPFly
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • KocerRoxy
  • Kookey
  • LemonBright
  • LemonLabs
  • LemonPrime
  • LightningProxies
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • MarsProxies
  • Maskify
  • MoMoProxy
  • MrScraper
  • NSocks
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PROXYWING_BASIC
  • PacketStream
  • PrivateByte
  • Proxies.fo
  • ProxiesVision
  • Proxio
  • Proxiware
  • Proxmint
  • Proxy-Cheap
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyStyler
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • QUANTICDATA
  • RH7Proxy
  • RainProxy
  • RapidProxy
  • RealProxy
  • ResiProxies
  • RoamProxy
  • RolaProxy
  • 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 Sep 2009 · 17.2 yr ago
4 · Use
VPN servicesnamed VPN Gate
Residential

Operators, sellers and brokers

VPN services

NameParentIn 121.144.0.0/12/24s
VPN GateUniversity of Tsukuba
37<0.01%
37

Lineage

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

121.144.0.0/12

From the registry to its use

  1. Apr 22, 2006– today
    Announced
    AS4766 Korea Telecom
    as part of 121.128.0.0/11
    121.128.0.0/11
  2. Sep 4, 2009
    Route object
    AS4766 Korea Telecom
    RADB route object for AS4766 Korea Telecom, maintainer MAINT-AS4766
  3. Sep 8, 2009– today
    Announced
    AS4766 Korea Telecom
    Internet provider
  4. today
    Registry record
    Korea Telecom
    ALLOCATED PORTABLE
    121.128.0.0/11
  5. today
    Used
    VPN Gate
    VPN

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
121.128.0.0/11
since Apr 2006
AS4766Residential13,693
626 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
PrefixOriginTypeAnonymizer addressesOperatorProxy exitsHolderRPKI
121.144.0.0/13
since Dec 2009
AS4766Residential19<0.01%VPNVPN servicesoperated by VPN Gate3,398
133 always on
Korea Telecom
121.144.140.0/22
since Nov 2019
AS9870BusinessKorea Telecom
121.144.140.0/23
since Nov 2019
AS9870BusinessKorea Telecom
121.144.142.0/23
since Nov 2019
AS9870BusinessKorea Telecom
121.144.144.0/22
since Nov 2019
AS9870BusinessKorea Telecom
121.144.144.0/23
since Nov 2019
AS9870BusinessKorea Telecom
121.144.146.0/23
since Nov 2019
AS9870BusinessKorea Telecom
121.144.148.0/23
since Nov 2019
AS9870BusinessKorea Telecom
121.144.148.0/24
since Nov 2019
AS9870BusinessKorea Telecom
121.144.149.0/24
since Nov 2019
AS9870BusinessKorea Telecom
121.144.249.0/24
since Jan 2024
AS18023BusinessKorea Telecom
121.144.250.0/24
since Jan 2024
AS18023BusinessKorea Telecom
121.147.42.0/25AS45986BusinessKorea Telecom
121.147.42.128/25AS45986BusinessKorea Telecom
121.150.39.0/24
since Nov 2008
AS4766Residential1Korea Telecom
121.150.50.0/24
since Dec 2020
AS4766ResidentialKorea Telecom
121.150.105.0/24
since May 2024
AS17588BusinessKorea Telecom
121.151.96.0/24
since May 2021
AS131792BusinessKorea Telecom
121.152.0.0/13
since Dec 2009
AS4766Residential18<0.01%VPNVPN servicesoperated by VPN Gate3,310
154 always on
Korea Telecom
121.156.64.0/24AS55593BusinessKorea Telecom
121.156.69.0/24
since Apr 2019
AS17834BusinessKorea Telecom
121.156.150.0/24
since Mar 2015
AS4766ResidentialKorea Telecom
121.156.153.0/24
since Mar 2015
AS4766Residential1Korea Telecom
121.157.0.0/22
since Aug 2016
AS9862Residential6Korea Telecom
121.157.4.0/24
since Aug 2016
AS9862ResidentialKorea Telecom
121.157.6.0/25AS38116Business1Korea Telecom
121.157.108.0/24
since Nov 2006
AS9638BusinessKorea Telecom
121.157.110.0/24
since Nov 2006
AS9638BusinessKorea Telecom
121.157.111.0/24
since Nov 2006
AS9638BusinessKorea Telecom
121.157.147.128/25AS131877BusinessKorea Telecom
121.159.34.0/23
since Jan 2018
AS4766ResidentialKorea Telecom
121.159.36.0/22
since Jan 2018
AS4766Residential2
1 always on
Korea Telecom
121.159.242.0/24
since Dec 2008
AS4766Residential1Korea Telecom
121.159.243.0/24
since Dec 2008
AS4766ResidentialKorea Telecom

Composition

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

Announced space

Address share

Announced space

Types across the prefix

1,048,576 addresses
TypeAddressesShareRanges
Residential1,043,163>99%67
Business5,3760.51%19
VPNanonymizer37<0.01%37

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