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Data as of Nov 9, 2026

144.121.168.0/22

12 residential-proxy exits · 30 days

Crown Castle Fiber LLC · space held by Zayo Bandwidth

Announcement
this exact prefix
No RPKI
Announced by
AS46887
Type
Internet provider
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
12
1.2% of its addresses · 30 days
Always-on exits
4
33% of its exits
Spread
3 of 4
/24s with at least one exit
Providers
50
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

20K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.170.0/2439
144.121.168.0/2411
144.121.169.0/2402

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • BirdProxies
  • BlurPath
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • CliProxy
  • ColaProxy
  • DataImpulse
  • Decodo
  • EnigmaProxy
  • Evomi
  • FLEETPROXY
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • Geonode
  • GloryCloud
  • IPFly
  • IPPeak
  • IPRoyal
  • InfiniteProxies
  • LemonBright
  • LudaxProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • Proxiware
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • RainProxy
  • SPYDERPROXY_PREMIUM
  • Thordata
  • ThunderProxy
  • TrueProxies
  • VantageProxies
  • VitalExclusive
  • WealthProxies
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.160.0/19
since May 2016
AS46887Internet provider24
4 always on
Zayo Bandwidth
144.121.0.0/16
since Nov 2021
AS46887Internet provider129
25 always on
Zayo Bandwidth

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
144.121.0.0/1665,536ZAYO-CCF-144-121-0-0Zayo Bandwidth (ZAYOB) · USDirect AllocationApr 29, 2016abuse@zayo.com
└ 144.121.168.0/298LTF--144-121-168-0-29unknown———
└ 144.121.168.8/298NET-CCF--144-121-168-8-29unknown———
└ 144.121.168.16/2816NET-CCF--144-121-168-16-28unknown———
└ 144.121.168.40/298LTF--144-121-168-40-29unknown———
└ 144.121.168.48/298NET-CCF-0-144-121-168-48-29unknown———
└ 144.121.168.56/298LTF--144-121-168-56-29unknown———
└ 144.121.168.64/2732NET-CCF--144-121-168-64-27unknown———
└ 144.121.168.96/2732LTF--144-121-168-96-27unknown———
└ 144.121.168.128/2816NET-Z-CCF--144-121-168-128-28unknown———
└ 144.121.168.144/298NET-Z-CCF--144-121-168-144-29unknown———
└ 144.121.168.152/304NET-Z-CCF-LT-614-144-121-168-152-30unknown———
└ 144.121.168.160/2816NET-144-121-168-160-28unknown———
└ 144.121.168.176/2816LTF--144-121-168-176-28unknown———
└ 144.121.168.192/2664LTF--144-121-168-192-26unknown———
└ 144.121.169.32/2732LTF--144-121-169-32-27unknown———
└ 144.121.169.64/2732LTF--144-121-169-64-27unknown———
└ 144.121.169.96/298NET-CCF-0-144-121-169-96-29unknown———
└ 144.121.169.104/298LTF--144-121-169-104-29unknown———
└ 144.121.169.120/298NET-CCF-0-144-121-169-120-29unknown———
└ 144.121.169.128/25128NET-Z-CCF--144-121-169-128-25unknown———
└ 144.121.170.0/2732LTF--144-121-170-0-27unknown———
└ 144.121.170.32/298NET-CCF-0-144-121-170-32-29unknown———
└ 144.121.170.40/298LTF--144-121-170-40-29unknown———
└ 144.121.170.48/304NET-Z-CCF--144-121-170-48-30unknown———
└ 144.121.170.60/304NET-CCF--144-121-170-60-30unknown———
└ 144.121.170.64/2732NET-CCF--144-121-170-64-27unknown———
└ 144.121.170.96/2732NET-CCF--144-121-170-96-27unknown———
└ 144.121.170.128/2816NET-0-144-121-170-128-28unknown———
└ 144.121.170.144/2816NET-CCF--144-121-170-144-28unknown———
└ 144.121.170.160/298NET-Z-CCF--144-121-170-160-29unknown———
└ 144.121.170.168/298NET-Z-CCF--144-121-170-168-29unknown———
└ 144.121.170.176/298NET-CCF-0-144-121-170-176-29unknown———
└ 144.121.170.184/298LTF--144-121-170-184-29unknown———
└ 144.121.170.192/2732LTF--144-121-170-192-27unknown———
└ 144.121.170.224/298LTF--144-121-170-224-29unknown———
└ 144.121.170.240/2816LTF--144-121-170-240-28unknown———
└ 144.121.171.0/298NET-Z-CCF--144-121-171-0-29unknown———
└ 144.121.171.8/298NET-Z-CCF--144-121-171-8-29unknown———
└ 144.121.171.16/298LTF--144-121-171-16-29unknown———
└ 144.121.171.24/304NET-CCF--0-144-121-171-24-30unknown———
└ 144.121.171.32/2816LTF--144-121-171-32-28unknown———
└ 144.121.171.52/304NET-CCF--144-121-171-52-30unknown———
└ 144.121.171.64/298LTF--144-121-171-64-29unknown———
└ 144.121.171.72/298NET-CCF--144-121-171-72-29unknown———
└ 144.121.171.80/304NET-CCF--144-121-171-80-30unknown———
└ 144.121.171.96/298NET-CCF--144-121-171-96-29unknown———
└ 144.121.171.104/298LTF--144-121-171-104-29unknown———
└ 144.121.171.112/304NET-CCF-0-144-121-171-112-30unknown———
└ 144.121.171.120/298NET-CCF--0-144-121-171-120-29unknown———
└ 144.121.171.128/2732LTF--144-121-171-128-27unknown———
└ 144.121.171.160/2732NET-0-144-121-171-160-27unknown———
└ 144.121.171.192/2732NET-CCF--144-121-171-192-27unknown———
└ 144.121.171.224/298NET-Z-CCF--144-121-171-224-29unknown———
└ 144.121.171.232/298NET-Z-CCF-0-144-121-171-232-29unknown———
└ 144.121.171.240/298NET-Z-CCF-0-144-121-171-240-29unknown———
└ 144.121.171.248/298NET-Z-CCF--144-121-171-248-29unknown———

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS46887

US
Name
Crown Castle Fiber LLC
Type
Internet provider
Registered
Apr 13, 2009
Domain
zayo.com
Website
www.crowncastle.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed