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Data as of Nov 9, 2026

144.121.220.0/22

10 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
10
0.98% of its addresses · 30 days
Always-on exits
1
10% of its exits
Spread
3 of 4
/24s with at least one exit
Providers
33
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

5.7K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.221.0/2414
144.121.220.0/2405
144.121.223.0/2401

Proxy providers listing exits

  • 711Proxy
  • Ake.net
  • AnyIP
  • ByteProxies
  • Byteful
  • CliProxy
  • ColaProxy
  • EZProxies
  • EnigmaProxy
  • FastProxy
  • FlexyProxies
  • FloppyData
  • GloryCloud
  • IPPeak
  • KocerRoxy
  • LemonBright
  • LudaxProxy
  • NovaProxy
  • Oxylabs
  • PROXYSCRAPE
  • Proxiware
  • ProxyEmpire
  • ProxyRack
  • PuraRoute
  • RainProxy
  • SPYDERPROXY_PREMIUM
  • Shifter
  • Thordata
  • ThunderProxy
  • TrueProxies
  • VantageProxies
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM

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
└ 144.121.220.16/2816LTF--144-121-220-16-28unknown———
└ 144.121.220.32/2732LTF--144-121-220-32-27unknown———
└ 144.121.220.64/2816LTF--144-121-220-64-28unknown———
└ 144.121.220.96/298NET-CCF--0-144-121-220-96-29unknown———
└ 144.121.220.112/298NET-CCF-0-144-121-220-112-29unknown———
└ 144.121.220.120/298NET-CCF--0-144-121-220-120-29unknown———
└ 144.121.220.128/2732LTF--144-121-220-128-27unknown———
└ 144.121.220.168/298LTF--144-121-220-168-29unknown———
└ 144.121.220.176/298NET-CCF-0-144-121-220-176-29unknown———
└ 144.121.220.184/304NET-CCF---144-121-220-184-30unknown———
└ 144.121.220.192/298LTF-0-144-121-220-192-29unknown———
└ 144.121.220.200/298NET-CCF--0-144-121-220-200-29unknown———
└ 144.121.220.216/304NET-CCF---144-121-220-216-30unknown———
└ 144.121.220.220/304NET-CCF--0-144-121-220-220-30unknown———
└ 144.121.220.224/298LTF--144-121-220-224-29unknown———
└ 144.121.220.232/298NET-CCF---144-121-220-232-29unknown———
└ 144.121.220.240/298NET-CCF--0-144-121-220-240-29unknown———
└ 144.121.221.0/2732NET-CCF-0-144-121-221-0-27unknown———
└ 144.121.221.32/2732LTF--144-121-221-32-27unknown———
└ 144.121.221.64/2732LTF--144-121-221-64-27unknown———
└ 144.121.221.96/2816LTF--144-121-221-96-28unknown———
└ 144.121.221.112/2816LTF--144-121-221-112-28unknown———
└ 144.121.221.128/298NET-CCF---144-121-221-128-29unknown———
└ 144.121.221.136/298NET-CCF-0-144-121-221-136-29unknown———
└ 144.121.221.144/304NET-Z-CCF--144-121-221-144-30unknown———
└ 144.121.221.148/304NET-Z-CCF--144-121-221-148-30unknown———
└ 144.121.221.152/298NET-Z-CCF--144-121-221-152-29unknown———
└ 144.121.221.160/2732LTF-144-121-221-160-27unknown———
└ 144.121.221.192/298LTF-144-121-221-192-29unknown———
└ 144.121.221.200/298NET-CCF--0-144-121-221-200-29unknown———
└ 144.121.221.208/298NET-CCF-0-144-121-221-208-29unknown———
└ 144.121.221.216/298NET-CCF--0-144-121-221-216-29unknown———
└ 144.121.221.224/2732NET-CCF-0-144-121-221-224-27unknown———
└ 144.121.222.0/2732LTF-144-121-222-0-27unknown———
└ 144.121.222.32/2816LTF--144-121-222-32-28unknown———
└ 144.121.222.48/298NET-CCF-0-144-121-222-48-29unknown———
└ 144.121.222.56/298LTF--144-121-222-56-29unknown———
└ 144.121.222.64/298NET-CCF-0-144-121-222-64-29unknown———
└ 144.121.222.76/304NET-CCF-0-144-121-222-76-30unknown———
└ 144.121.222.80/304NET-CCF--0-144-121-222-80-30unknown———
└ 144.121.222.88/298NET-CCF--0-144-121-222-88-29unknown———
└ 144.121.222.96/2816NET-CCF--0-144-121-222-96-28unknown———
└ 144.121.222.120/304NET-CCF---144-121-222-120-30unknown———
└ 144.121.222.128/2816LTF--144-121-222-128-28unknown———
└ 144.121.222.144/304NET-CCF--0-144-121-222-144-30unknown———
└ 144.121.222.152/298NET-CCF---144-121-222-152-29unknown———
└ 144.121.222.160/304NET-Z-CCF--144-121-222-160-30unknown———
└ 144.121.222.168/298NET-CCF--144-121-222-168-29unknown———
└ 144.121.222.184/298NET-CCF--144-121-222-184-29unknown———
└ 144.121.222.192/298LTF-0-144-121-222-192-29unknown———
└ 144.121.222.200/298LTF--144-121-222-200-29unknown———
└ 144.121.222.212/304NET-CCF-0-144-121-222-212-30unknown———
└ 144.121.222.224/298NET-Z-CCF--144-121-222-224-29unknown———
└ 144.121.222.232/298LTF-LT-201-144-121-222-232-29unknown———
└ 144.121.222.240/2816LTF-0-144-121-222-240-28unknown———
└ 144.121.223.0/298NET-CCF--0-144-121-223-0-29unknown———
└ 144.121.223.8/298LTF--144-121-223-8-29unknown———
└ 144.121.223.20/304NET-CCF--144-121-223-20-30unknown———
└ 144.121.223.24/298LTF-0-144-121-223-24-29unknown———
└ 144.121.223.32/304NET-Z-CCF--144-121-223-32-30unknown———
└ 144.121.223.36/304NET-Z-CCF--144-121-223-36-30unknown———
└ 144.121.223.40/304NET-Z-CCF--144-121-223-40-30unknown———
└ 144.121.223.44/304NET-Z-CCF--144-121-223-44-30unknown———
└ 144.121.223.48/304NET-Z-CCF--144-121-223-48-30unknown———
└ 144.121.223.52/304NET-Z-CCF--144-121-223-52-30unknown———
└ 144.121.223.56/304NET-Z-CCF--144-121-223-56-30unknown———
└ 144.121.223.60/304NET-Z-CCF--144-121-223-60-30unknown———
└ 144.121.223.72/298LTF-144-121-223-72-29unknown———
└ 144.121.223.88/298LTF--144-121-223-88-29unknown———
└ 144.121.223.96/2732LTF--144-121-223-96-27unknown———
└ 144.121.223.140/304NET-CCF--144-121-223-140-30unknown———
└ 144.121.223.144/298LTF--144-121-223-144-29unknown———
└ 144.121.223.152/298LTF--144-121-223-152-29unknown———
└ 144.121.223.160/2816NET-CCF--0-144-121-223-160-28unknown———
└ 144.121.223.176/298LTF-LT-697-144-121-223-176-29unknown———
└ 144.121.223.192/298NET-Z-CCF-0-144-121-223-192-29unknown———
└ 144.121.223.200/298LTF--144-121-223-200-29unknown———
└ 144.121.223.208/2816LTF--144-121-223-208-28unknown———
└ 144.121.223.224/298NET-CCF--0-144-121-223-224-29unknown———
└ 144.121.223.232/298NET-CCF-0-144-121-223-232-29unknown———
└ 144.121.223.240/298LTF--144-121-223-240-29unknown———

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