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Data as of Nov 9, 2026

144.121.208.0/22

3 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
3
0.29% of its addresses · 30 days
Always-on exits
1
33% of its exits
Spread
2 of 4
/24s with at least one exit
Providers
33
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

2.6K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.211.0/2412
144.121.209.0/2401

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • Byteful
  • ColaProxy
  • EZProxies
  • FastProxy
  • GloryCloud
  • IPFly
  • IPPeak
  • Kookey
  • LemonBright
  • LudaxProxy
  • MoMoProxy
  • NovaProxy
  • Novada
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • PuraRoute
  • RainProxy
  • RoamProxy
  • RolaProxy
  • Shifter
  • TalorData
  • Thordata
  • TrueProxies
  • YumiProxy
  • ZENPROXY_LITE

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.192.0/18
since Dec 2017
AS46887Internet provider41
8 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
└ 144.121.208.0/298NET-CCF-0-144-121-208-0-29unknown———
└ 144.121.208.16/298NET-Z-CCF--144-121-208-16-29unknown———
└ 144.121.208.24/298LTF-LT-614-144-121-208-24-29unknown———
└ 144.121.208.32/298NET-CCF-0-144-121-208-32-29unknown———
└ 144.121.208.40/298LTF-SD-50975-144-121-208-40-29unknown———
└ 144.121.208.48/304NET-144-121-208-48-30unknown———
└ 144.121.208.56/298NET-144-121-208-56-29unknown———
└ 144.121.208.64/2732LTF--144-121-208-64-27unknown———
└ 144.121.208.96/298LTF--144-121-208-96-29unknown———
└ 144.121.208.108/304LTF-144-121-208-108-30unknown———
└ 144.121.208.112/298NET-CCF--144-121-208-112-29unknown———
└ 144.121.208.128/2732LTF--144-121-208-128-27unknown———
└ 144.121.208.160/298NET-CCF---144-121-208-160-29unknown———
└ 144.121.208.168/298NET-144-121-208-168-29unknown———
└ 144.121.208.180/304NET-Z-CCF-0-144-121-208-180-30unknown———
└ 144.121.208.184/298NET-144-121-208-184-29unknown———
└ 144.121.208.192/298NET-144-121-208-192-29unknown———
└ 144.121.208.216/304NET-CCF---144-121-208-216-30unknown———
└ 144.121.208.224/2816LTF--144-121-208-224-28unknown———
└ 144.121.208.240/2816LTF--144-121-208-240-28unknown———
└ 144.121.209.16/2816NET-144-121-209-16-28unknown———
└ 144.121.209.32/298NET-CCF--144-121-209-32-29unknown———
└ 144.121.209.40/298NET-CCF--144-121-209-40-29unknown———
└ 144.121.209.48/298NET-CCF--144-121-209-48-29unknown———
└ 144.121.209.64/298LTF--144-121-209-64-29unknown———
└ 144.121.209.96/2732LTF--144-121-209-96-27unknown———
└ 144.121.209.160/298LTF--144-121-209-160-29unknown———
└ 144.121.209.168/304NET-CCF--0-144-121-209-168-30unknown———
└ 144.121.209.176/2816NET-144-121-209-176-28unknown———
└ 144.121.209.208/298NET-CCF---144-121-209-208-29unknown———
└ 144.121.209.232/298LTF--144-121-209-232-29unknown———
└ 144.121.209.240/298NET-Z-CCF-LT-422-144-121-209-240-29unknown———
└ 144.121.210.0/298NET-CCF---144-121-210-0-29unknown———
└ 144.121.210.12/304NET-CCF-0-144-121-210-12-30unknown———
└ 144.121.210.16/304NET-CCF--144-121-210-16-30unknown———
└ 144.121.210.24/298LTF--144-121-210-24-29unknown———
└ 144.121.210.32/2732LTF--144-121-210-32-27unknown———
└ 144.121.210.64/298NET-144-121-210-64-29unknown———
└ 144.121.210.72/304NET-Z-CCF-LT-422-144-121-210-72-30unknown———
└ 144.121.210.76/304NET-CCF-0-144-121-210-76-30unknown———
└ 144.121.210.80/298LTF--144-121-210-80-29unknown———
└ 144.121.210.92/304NET-CCF--0-144-121-210-92-30unknown———
└ 144.121.210.104/298NET-CCF---144-121-210-104-29unknown———
└ 144.121.210.112/298NET-CCF-144-121-210-112-29unknown———
└ 144.121.210.160/298NET-CCF--0-144-121-210-160-29unknown———
└ 144.121.210.168/304NET-Z-CCF--144-121-210-168-30unknown———
└ 144.121.210.188/304NET-Z-CCF--144-121-210-188-30unknown———
└ 144.121.210.192/2732LTF--144-121-210-192-27unknown———
└ 144.121.210.224/2816NET-CCF--0-144-121-210-224-28unknown———
└ 144.121.210.240/2816NET-CCF-0-144-121-210-240-28unknown———
└ 144.121.211.0/304NET-Z-CCF--144-121-211-0-30unknown———
└ 144.121.211.4/304NET-CCF--0-144-121-211-4-30unknown———
└ 144.121.211.8/304NET-Z-CCF--144-121-211-8-30unknown———
└ 144.121.211.16/298NET-CCF--0-144-121-211-16-29unknown———
└ 144.121.211.32/298NET-144-121-211-32-29unknown———
└ 144.121.211.40/298LTF--144-121-211-40-29unknown———
└ 144.121.211.56/298NET-144-121-211-56-29unknown———
└ 144.121.211.64/298NET-CCF-0-144-121-211-64-29unknown———
└ 144.121.211.72/298NET-CCF--144-121-211-72-29unknown———
└ 144.121.211.80/304NET-CCF-0-144-121-211-80-30unknown———
└ 144.121.211.84/304NET-CCF--0-144-121-211-84-30unknown———
└ 144.121.211.96/298NET-CCF--144-121-211-96-29unknown———
└ 144.121.211.104/304NET-CCF--144-121-211-104-30unknown———
└ 144.121.211.108/304NET-CCF--144-121-211-108-30unknown———
└ 144.121.211.112/2816NET-CCF-0-144-121-211-112-28unknown———
└ 144.121.211.128/298NET-144-121-211-128-29unknown———
└ 144.121.211.136/298NET-CCF---144-121-211-136-29unknown———
└ 144.121.211.144/298NET-CCF--144-121-211-144-29unknown———
└ 144.121.211.152/298LTF--144-121-211-152-29unknown———
└ 144.121.211.164/304NET-Z-CCF-LT-422-144-121-211-164-30unknown———
└ 144.121.211.168/298NET-CCF--0-144-121-211-168-29unknown———
└ 144.121.211.184/304NET-Z-CCF-0-144-121-211-184-30unknown———
└ 144.121.211.192/2816NET-CCF--144-121-211-192-28unknown———
└ 144.121.211.208/298LTF--144-121-211-208-29unknown———
└ 144.121.211.224/2732LTF--144-121-211-224-27unknown———

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