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Data as of Nov 7, 2026

144.121.0.0/22

2 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
2
0.20% of its addresses · 30 days
Always-on exits
2
100% of its exits
Spread
2 of 4
/24s with at least one exit
Providers
29
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

4.0K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.2.0/2411
144.121.3.0/2411

Proxy providers listing exits

  • 711Proxy
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • DataImpulse
  • Decodo
  • EZProxies
  • FlashProxy
  • FloppyData
  • Geonode
  • GloryCloud
  • IPFly
  • IPPeak
  • LudaxProxy
  • Maskify
  • Oxylabs
  • Proxy-Seller
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • PuraRoute
  • RainProxy
  • RoamProxy
  • Thordata
  • ThunderProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/18
since Aug 2016
AS46887Internet provider17
3 always on
Zayo Bandwidth
144.121.0.0/16
since Nov 2021
AS46887Internet provider134
24 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
└ 144.121.0.0/304NET-CCF--SD-49524-144-121-0-0-30unknown———
└ 144.121.0.8/304NET-CCF-0-144-121-0-8-30unknown———
└ 144.121.0.12/304NET-CCF--0-144-121-0-12-30unknown———
└ 144.121.0.16/304NET-CCF--0-144-121-0-16-30unknown———
└ 144.121.0.20/304NET-CCF-0-144-121-0-20-30unknown———
└ 144.121.0.24/304NET-CCF--144-121-0-24-30unknown———
└ 144.121.0.32/298NET-144-121-0-32-29unknown———
└ 144.121.0.40/298LTF--144-121-0-40-29unknown———
└ 144.121.0.48/304NET-CCF---144-121-0-48-30unknown———
└ 144.121.0.56/298LTF--144-121-0-56-29unknown———
└ 144.121.0.64/2732NET-144-121-0-64-27unknown———
└ 144.121.0.96/298NET-CCF---144-121-0-96-29unknown———
└ 144.121.0.104/298NET-CCF--0-144-121-0-104-29unknown———
└ 144.121.0.112/304NET-CCF---144-121-0-112-30unknown———
└ 144.121.0.116/304NET-CCF---144-121-0-116-30unknown———
└ 144.121.0.120/298NET-CCF---144-121-0-120-29unknown———
└ 144.121.0.128/304NET-CCF---144-121-0-128-30unknown———
└ 144.121.0.144/298NET-CCF-0-144-121-0-144-29unknown———
└ 144.121.0.160/298NET-CCF--0-144-121-0-160-29unknown———
└ 144.121.0.168/298NET-CCF--0-144-121-0-168-29unknown———
└ 144.121.0.176/298NET-144-121-0-176-29unknown———
└ 144.121.0.192/298NET-CCF---144-121-0-192-29unknown———
└ 144.121.0.200/298NET-CCF---144-121-0-200-29unknown———
└ 144.121.0.208/298NET-CCF---144-121-0-208-29unknown———
└ 144.121.0.216/298NET-CCF---144-121-0-216-29unknown———
└ 144.121.0.232/298NET-144-121-0-232-29unknown———
└ 144.121.0.240/304NET-CCF---144-121-0-240-30unknown———
└ 144.121.0.248/298LTF--144-121-0-248-29unknown———
└ 144.121.2.0/2732NET-CCF-0-144-121-2-0-27unknown———
└ 144.121.2.32/2816LTF-LT-614-144-121-2-32-28unknown———
└ 144.121.2.52/304NET-CCF--0-144-121-2-52-30unknown———
└ 144.121.2.56/304NET-CCF--0-144-121-2-56-30unknown———
└ 144.121.2.60/304NET-CCF--SD-50844-144-121-2-60-30unknown———
└ 144.121.2.64/2816NET-CCF---144-121-2-64-28unknown———
└ 144.121.2.80/298NET-CCF--144-121-2-80-29unknown———
└ 144.121.2.96/298NET-CCF---144-121-2-96-29unknown———
└ 144.121.2.104/298NET-CCF--LT-614-144-121-2-104-29unknown———
└ 144.121.2.112/2816NET-CCF--0-144-121-2-112-28unknown———
└ 144.121.2.128/2816NET-144-121-2-128-28unknown———
└ 144.121.2.144/2816NET-CCF---144-121-2-144-28unknown———
└ 144.121.2.160/304NET-CCF---144-121-2-160-30unknown———
└ 144.121.2.168/298NET-CCF-0-144-121-2-168-29unknown———
└ 144.121.2.176/298NET-CCF--0-144-121-2-176-29unknown———
└ 144.121.2.184/304NET-CCF---144-121-2-184-30unknown———
└ 144.121.2.192/2816NET-144-121-2-192-28unknown———
└ 144.121.2.208/298NET-CCF---144-121-2-208-29unknown———
└ 144.121.2.216/304NET-CCF---144-121-2-216-30unknown———
└ 144.121.2.220/304NET-Z-CCF-0-144-121-2-220-30unknown———
└ 144.121.2.224/2816NET-CCF---144-121-2-224-28unknown———
└ 144.121.2.240/298NET-CCF---144-121-2-240-29unknown———
└ 144.121.2.248/298NET-144-121-2-248-29unknown———
└ 144.121.3.0/298NET-144-121-3-0-29unknown———
└ 144.121.3.16/298NET-144-121-3-16-29unknown———
└ 144.121.3.24/304NET-CCF---144-121-3-24-30unknown———
└ 144.121.3.32/2732NET-CCF---144-121-3-32-27unknown———
└ 144.121.3.64/298NET-SD-50020-144-121-3-64-29unknown———
└ 144.121.3.80/2816NET-144-121-3-80-28unknown———
└ 144.121.3.96/2732NET-Z-CCF--144-121-3-96-27unknown———
└ 144.121.3.128/298NET-CCF---144-121-3-128-29unknown———
└ 144.121.3.144/304NET-CCF---144-121-3-144-30unknown———
└ 144.121.3.152/298LTF-0-144-121-3-152-29unknown———
└ 144.121.3.160/298NET-CCF--0-144-121-3-160-29unknown———
└ 144.121.3.168/298NET-CCF-144-121-3-168-29unknown———
└ 144.121.3.176/2816NET-CCF---144-121-3-176-28unknown———
└ 144.121.3.192/298NET-144-121-3-192-29unknown———
└ 144.121.3.200/304NET-CCF--SD-50292-144-121-3-200-30unknown———
└ 144.121.3.204/304NET-CCF---144-121-3-204-30unknown———
└ 144.121.3.208/2816NET-CCF---144-121-3-208-28unknown———
└ 144.121.3.224/298NET-CCF--0-144-121-3-224-29unknown———
└ 144.121.3.232/298NET-144-121-3-232-29unknown———
└ 144.121.3.248/298NET-144-121-3-248-29unknown———

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