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Data as of Nov 9, 2026

144.121.200.0/22

6 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
6
0.59% of its addresses · 30 days
Always-on exits
3
50% of its exits
Spread
3 of 4
/24s with at least one exit
Providers
32
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

25K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.201.0/2423
144.121.203.0/2411
144.121.202.0/2403

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • ColaProxy
  • DataImpulse
  • Decodo
  • EnigmaProxy
  • FlashProxy
  • FloppyData
  • Geonode
  • GonzoProxy
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • Kookey
  • LemonBright
  • NovaProxy
  • Oxylabs
  • PacketStream
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Thordata
  • ThunderProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.192.0/18
since Dec 2017
AS46887Internet provider43
8 always on
Zayo Bandwidth
144.121.0.0/16
since Nov 2021
AS46887Internet provider132
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
└ 144.121.200.0/24256NET-144-121-200-0-24unknown———
└ 144.121.201.0/298LTF--144-121-201-0-29unknown———
└ 144.121.201.12/304NET-CCF--0-144-121-201-12-30unknown———
└ 144.121.201.24/298NET-CCF-0-144-121-201-24-29unknown———
└ 144.121.201.64/2816NET-144-121-201-64-28unknown———
└ 144.121.201.80/304NET-CCF--144-121-201-80-30unknown———
└ 144.121.201.88/298NET-144-121-201-88-29unknown———
└ 144.121.201.96/304NET-CCF-0-144-121-201-96-30unknown———
└ 144.121.201.100/304NET-CCF-0-144-121-201-100-30unknown———
└ 144.121.201.104/298NET-144-121-201-104-29unknown———
└ 144.121.201.120/304NET-CCF-0-144-121-201-120-30unknown———
└ 144.121.201.124/304NET-CCF-0-144-121-201-124-30unknown———
└ 144.121.201.128/2732NET-144-121-201-128-27unknown———
└ 144.121.201.160/2816NET-CCF--0-144-121-201-160-28unknown———
└ 144.121.201.176/298NET-CCF--144-121-201-176-29unknown———
└ 144.121.201.208/2816NET-CCF-144-121-201-208-28unknown———
└ 144.121.201.224/298NET-144-121-201-224-29unknown———
└ 144.121.201.232/298NET-CCF---144-121-201-232-29unknown———
└ 144.121.201.240/304NET-CCF-0-144-121-201-240-30unknown———
└ 144.121.201.244/304NET-CCF---144-121-201-244-30unknown———
└ 144.121.201.248/298NET-CCF--144-121-201-248-29unknown———
└ 144.121.202.0/2732NET-144-121-202-0-27unknown———
└ 144.121.202.48/304NET-CCF--144-121-202-48-30unknown———
└ 144.121.202.56/298NET-144-121-202-56-29unknown———
└ 144.121.202.64/2732NET-144-121-202-64-27unknown———
└ 144.121.202.96/2816NET-144-121-202-96-28unknown———
└ 144.121.202.120/304NET-CCF--0-144-121-202-120-30unknown———
└ 144.121.202.140/304NET-CCF--144-121-202-140-30unknown———
└ 144.121.202.160/2732NET-CCF--144-121-202-160-27unknown———
└ 144.121.202.192/298NET-144-121-202-192-29unknown———
└ 144.121.202.200/298NET-CCF--144-121-202-200-29unknown———
└ 144.121.202.232/298NET-CCF-0-144-121-202-232-29unknown———
└ 144.121.202.240/2816NET-144-121-202-240-28unknown———
└ 144.121.203.8/298NET-CCF--144-121-203-8-29unknown———
└ 144.121.203.32/2732NET-LT-638-144-121-203-32-27unknown———
└ 144.121.203.64/298NET-144-121-203-64-29unknown———
└ 144.121.203.72/304NET-Z-CCF--144-121-203-72-30unknown———
└ 144.121.203.80/2816NET-144-121-203-80-28unknown———
└ 144.121.203.104/304NET-CCF--144-121-203-104-30unknown———
└ 144.121.203.112/298NET-Z-CCF-LT-422-144-121-203-112-29unknown———
└ 144.121.203.120/298NET-Z-CCF-LT-422-144-121-203-120-29unknown———
└ 144.121.203.128/298LTF--144-121-203-128-29unknown———
└ 144.121.203.140/304NET-CCF--0-144-121-203-140-30unknown———
└ 144.121.203.148/304NET-CCF--144-121-203-148-30unknown———
└ 144.121.203.152/298LTF--144-121-203-152-29unknown———
└ 144.121.203.164/304NET-CCF--144-121-203-164-30unknown———
└ 144.121.203.168/298NET-CCF--144-121-203-168-29unknown———
└ 144.121.203.184/298NET-144-121-203-184-29unknown———
└ 144.121.203.192/298NET-144-121-203-192-29unknown———
└ 144.121.203.208/298LTF-LT-693-144-121-203-208-29unknown———
└ 144.121.203.224/2816NET-144-121-203-224-28unknown———
└ 144.121.203.248/304NET-Z-CCF--144-121-203-248-30unknown———

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