LAYER3 INTEL
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Data as of Nov 15, 2026

133.51.0.0/16

90 residential-proxy exits · 30 days

University of Tsukuba · space held by Japan Network Information Center

Announcement
this exact prefix
No RPKI
Announced by
AS37917
Type
Business
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
90
0.14% of its addresses · 30 days
Spread
22 of 256
/24s with at least one exit
Providers
15
selling exits here
Oct 16, 2026 – Nov 14, 2026

Exits seen per day

356 observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
133.51.114.0/24010
133.51.112.0/2408
133.51.93.0/2407
133.51.115.0/2407
133.51.119.0/2406
133.51.113.0/2406
133.51.90.0/2406
133.51.91.0/2406
133.51.84.0/2405
133.51.122.0/2404
133.51.85.0/2403
133.51.127.0/2403
133.51.117.0/2403
133.51.69.0/2403
133.51.92.0/2402
133.51.172.0/2402
133.51.79.0/2402
133.51.78.0/2402
133.51.118.0/2402
133.51.94.0/2401
133.51.116.0/2401
133.51.68.0/2401

Proxy providers listing exits

  • 9HTTP
  • EnigmaProxy
  • FastProxy
  • IPFly
  • LudaxProxy
  • NovaProxy
  • Proxies.fo
  • Proxiware
  • ProxyEmpire
  • PuraRoute
  • RainProxy
  • Shifter
  • VantageProxies
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM

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
Jul 2007 · 19 yr
Origin networks
2
Last change of origin
Jul 2007
Recorded history

History

Handoffs
1