LAYER3 INTEL
Get started
TripwireIntel APIIP IntelPricingBlogDocsContactSign in
Data as of Nov 3, 2026
Autonomous system

AS23780

CTB Media Inc.

Announces 16,384 addresses in 5 prefixes. 1 of them are anonymizer space (all VPN) in 1 prefix: <0.01% of what it announces.

Type
Internet provider
JP
Operators · brokers · owners leasing
1 · 0 · 0
Proxy activity, 30 days
40 exits

Announced prefixes

All 5Carrying anonymizer space1
Arrived
PrefixTypeAnonymizer addressesOperatorProxy exitsHolderRPKI
49.128.24.0/21
since Dec 2010
Residential11
49.128.96.0/22
since Dec 2010
Residential
203.201.52.0/22
since Apr 2011
Residential5
211.15.112.0/20
since May 2005
Residential10.02%VPNVPN servicesoperated by VPN Gate8Japan Network Information Center
211.19.224.0/19
since May 2005
Residential18
1 always on
Japan Network Information Center

Operators, sellers and brokers

VPN services

NameParentIn AS23780/24s
VPN GateUniversity of Tsukuba (volunteer relays)
1<0.01%
1

Residential-proxy exposure

Always-on exits
1
2.5% of its exits
Spread
29
/24s with at least one exit
Providers
49
selling exits here

/24s with the most always-on exits

/24Always-on exitsProxy exits
211.19.253.0/2411
49.128.29.0/2404
211.15.124.0/2403
49.128.31.0/2403
211.19.255.0/2402
211.19.254.0/2402
203.201.52.0/2402
203.201.54.0/2402
211.19.243.0/2402
49.128.24.0/2402
211.19.225.0/2401
211.19.238.0/2401
211.15.121.0/2401
211.15.126.0/2401
211.15.120.0/2401
211.19.226.0/2401
211.19.232.0/2401
211.19.233.0/2401
211.19.235.0/2401
211.15.122.0/2401
211.19.239.0/2401
211.19.240.0/2401
211.19.241.0/2401
211.15.115.0/2401

Proxy providers listing exits

  • 711Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BlurPath
  • BottingTools
  • BuyingProxy
  • ByteProxies
  • CatProxies
  • CliProxy
  • DataImpulse
  • Datarama
  • Decodo
  • EZProxies
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GeekProxy
  • Geonode
  • GloryCloud
  • IPCola
  • IPFly
  • IPPeak
  • InfiniteProxies
  • KindProxy
  • LemonPrime
  • LudaxProxy
  • MoMoProxy
  • NovProxy
  • NovaProxy
  • Novada
  • PSBProxy
  • PacketStream
  • PrivateByte
  • Proxio
  • Proxiware
  • Proxy4U
  • ProxyGeo
  • Proxying
  • PuraRoute
  • RainProxy
  • RapidProxy
  • RoamProxy
  • RolaProxy
  • Shifter
  • SwiftProxy

Proxy activity

Oct 4, 2026 – Nov 2, 2026

AS23780, day by day

3.0K observations
  • VPN · anonymizer
  • Residential

Network & history

NetworkHistory
Profile
Registered
Jun 16, 2003
Domain
ctb.jp
Website
www.ctb.jp
Industry
Internet Service Provider (ISP)