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Data as of Nov 9, 2026

144.121.144.0/22

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
26
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

2.7K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.147.0/2412
144.121.146.0/2401

Proxy providers listing exits

  • Ake.net
  • AnyIP
  • ByteProxies
  • Byteful
  • CliProxy
  • ColaProxy
  • Decodo
  • EnigmaProxy
  • FastProxy
  • FlexyProxies
  • FloppyData
  • Geonode
  • GloryCloud
  • IPPeak
  • LudaxProxy
  • NovProxy
  • NovaProxy
  • Oxylabs
  • Proxiware
  • ProxyEmpire
  • ProxyRack
  • RainProxy
  • Thordata
  • VantageProxies
  • WealthProxies
  • ZENPROXY_PREMIUM

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.128.0/19
since Jun 2016
AS46887Internet provider13
2 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
└ 144.121.144.0/298NET-CCF-SD-50946-144-121-144-0-29unknown———
└ 144.121.144.8/298LTF--144-121-144-8-29unknown———
└ 144.121.144.20/304NET-CCF---144-121-144-20-30unknown———
└ 144.121.144.28/304NET-CCF---144-121-144-28-30unknown———
└ 144.121.144.32/304NET-CCF--144-121-144-32-30unknown———
└ 144.121.144.40/298NET-CCF--144-121-144-40-29unknown———
└ 144.121.144.48/298NET-CCF--144-121-144-48-29unknown———
└ 144.121.144.56/304NET-CCF--144-121-144-56-30unknown———
└ 144.121.144.96/2732NET-144-121-144-96-27unknown———
└ 144.121.144.128/298LTF--144-121-144-128-29unknown———
└ 144.121.144.136/304NET-CCF---144-121-144-136-30unknown———
└ 144.121.144.144/298NET-CCF-0-144-121-144-144-29unknown———
└ 144.121.144.156/304NET-CCF---144-121-144-156-30unknown———
└ 144.121.144.160/2732LTF--144-121-144-160-27unknown———
└ 144.121.144.192/298LTF--144-121-144-192-29unknown———
└ 144.121.144.200/298NET-CCF-0-144-121-144-200-29unknown———
└ 144.121.144.208/2816LTF--144-121-144-208-28unknown———
└ 144.121.144.228/304NET-CCF---144-121-144-228-30unknown———
└ 144.121.144.232/298NET-CCF---144-121-144-232-29unknown———
└ 144.121.145.0/298NET-CCF-0-144-121-145-0-29unknown———
└ 144.121.145.8/304NET-CCF---144-121-145-8-30unknown———
└ 144.121.145.16/298NET-CCF---144-121-145-16-29unknown———
└ 144.121.145.24/298NET-CCF---144-121-145-24-29unknown———
└ 144.121.145.32/2816LTF-LT-316-144-121-145-32-28unknown———
└ 144.121.145.48/298NET-CCF---144-121-145-48-29unknown———
└ 144.121.145.56/298NET-CCF---144-121-145-56-29unknown———
└ 144.121.145.64/298NET-CCF-0-144-121-145-64-29unknown———
└ 144.121.145.72/298NET-CCF--144-121-145-72-29unknown———
└ 144.121.145.80/298NET-CCF-0-144-121-145-80-29unknown———
└ 144.121.145.88/298LTF-0-144-121-145-88-29unknown———
└ 144.121.145.96/298NET-CCF--144-121-145-96-29unknown———
└ 144.121.145.104/304NET-CCF---144-121-145-104-30unknown———
└ 144.121.145.112/304NET-CCF---144-121-145-112-30unknown———
└ 144.121.145.120/298NET-CCF-0-144-121-145-120-29unknown———
└ 144.121.145.128/2732NET-0-144-121-145-128-27unknown———
└ 144.121.146.0/2664NET-CCF--144-121-146-0-26unknown———
└ 144.121.146.80/298NET-CCF-0-144-121-146-80-29unknown———
└ 144.121.146.88/298NET-CCF-0-144-121-146-88-29unknown———
└ 144.121.146.96/2816NET-CCF--144-121-146-96-28unknown———
└ 144.121.146.112/298NET-CCF--144-121-146-112-29unknown———
└ 144.121.146.120/298NET-CCF-0-144-121-146-120-29unknown———
└ 144.121.146.128/298NET-CCF-0-144-121-146-128-29unknown———
└ 144.121.146.140/304NET-CCF--144-121-146-140-30unknown———
└ 144.121.146.144/298NET-CCF-0-144-121-146-144-29unknown———
└ 144.121.146.152/298NET-CCF-0-144-121-146-152-29unknown———
└ 144.121.146.160/2816NET-CCF--144-121-146-160-28unknown———
└ 144.121.146.176/298NET-CCF-0-144-121-146-176-29unknown———
└ 144.121.146.184/298NET-CCF--144-121-146-184-29unknown———
└ 144.121.146.192/298NET-CCF--144-121-146-192-29unknown———
└ 144.121.146.200/304NET-CCF--144-121-146-200-30unknown———
└ 144.121.146.204/304NET-CCF--144-121-146-204-30unknown———
└ 144.121.146.208/298NET-CCF--144-121-146-208-29unknown———
└ 144.121.146.216/304NET-CCF--144-121-146-216-30unknown———
└ 144.121.146.220/304NET-Z-CCF-0-144-121-146-220-30unknown———
└ 144.121.146.224/2816NET-CCF--144-121-146-224-28unknown———
└ 144.121.146.240/304NET-CCF--144-121-146-240-30unknown———
└ 144.121.146.244/304NET-Z-CCF--144-121-146-244-30unknown———
└ 144.121.146.248/304NET-Z-CCF--144-121-146-248-30unknown———
└ 144.121.146.252/304NET-Z-CCF--144-121-146-252-30unknown———
└ 144.121.147.0/2816NET-144-121-147-0-28unknown———
└ 144.121.147.16/298NET-CCF--144-121-147-16-29unknown———
└ 144.121.147.24/298NET-CCF---144-121-147-24-29unknown———
└ 144.121.147.32/2816NET-CCF---144-121-147-32-28unknown———
└ 144.121.147.48/2816NET-CCF-0-144-121-147-48-28unknown———
└ 144.121.147.64/298NET-CCF---144-121-147-64-29unknown———
└ 144.121.147.72/304NET-CCF--0-144-121-147-72-30unknown———
└ 144.121.147.76/304NET-CCF---144-121-147-76-30unknown———
└ 144.121.147.96/2816NET-CCF--144-121-147-96-28unknown———
└ 144.121.147.112/298NET-CCF--144-121-147-112-29unknown———
└ 144.121.147.128/2732LTF--144-121-147-128-27unknown———
└ 144.121.147.160/2816NET-CCF--0-144-121-147-160-28unknown———
└ 144.121.147.176/304NET-CCF-0-144-121-147-176-30unknown———
└ 144.121.147.184/298NET-CCF--144-121-147-184-29unknown———
└ 144.121.147.200/298LTF--144-121-147-200-29unknown———
└ 144.121.147.208/298LTF-144-121-147-208-29unknown———
└ 144.121.147.216/298LTF--144-121-147-216-29unknown———
└ 144.121.147.224/2732LTF--144-121-147-224-27unknown———

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