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Data as of Nov 9, 2026

144.121.20.0/22

1 residential-proxy exit · 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
1
0.10% of its addresses · 30 days
Spread
1 of 4
/24s with at least one exit
Providers
4
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

5 observations

Proxy providers listing exits

  • B2Proxy
  • IPPeak
  • LudaxProxy
  • RainProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/18
since Aug 2016
AS46887Internet provider16
3 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
└ 144.121.20.0/304NET-CCF--144-121-20-0-30unknown———
└ 144.121.20.4/304NET-CCF--144-121-20-4-30unknown———
└ 144.121.20.16/2816NET-CCF--144-121-20-16-28unknown———
└ 144.121.20.80/298NET-CCF-LT-447-144-121-20-80-29unknown———
└ 144.121.20.88/298NET-CCF--144-121-20-88-29unknown———
└ 144.121.20.104/298NET-144-121-20-104-29unknown———
└ 144.121.20.128/2816NET-144-121-20-128-28unknown———
└ 144.121.20.144/298NET-CCF--144-121-20-144-29unknown———
└ 144.121.20.152/298NET-CCF-SD-50649-144-121-20-152-29unknown———
└ 144.121.20.160/298NET-144-121-20-160-29unknown———
└ 144.121.20.176/2816NET-144-121-20-176-28unknown———
└ 144.121.20.192/2664NET-LT-515-144-121-20-192-26unknown———
└ 144.121.21.8/298NET-CCF--144-121-21-8-29unknown———
└ 144.121.21.16/2816NET-144-121-21-16-28unknown———
└ 144.121.21.32/298NET-CCF--144-121-21-32-29unknown———
└ 144.121.21.44/304NET-CCF--144-121-21-44-30unknown———
└ 144.121.21.64/2732NET-144-121-21-64-27unknown———
└ 144.121.21.96/298NET-CCF--144-121-21-96-29unknown———
└ 144.121.21.112/298LTF-0-144-121-21-112-29unknown———
└ 144.121.21.124/304NET-Z-CCF-0-144-121-21-124-30unknown———
└ 144.121.21.128/298NET-CCF--144-121-21-128-29unknown———
└ 144.121.21.140/304NET-CCF-0-144-121-21-140-30unknown———
└ 144.121.21.144/2816NET-Z-CCF-LT-614-144-121-21-144-28unknown———
└ 144.121.21.160/2816NET-LT-785-144-121-21-160-28unknown———
└ 144.121.21.184/298NET-CCF--144-121-21-184-29unknown———
└ 144.121.21.200/304NET-Z-CCF-0-144-121-21-200-30unknown———
└ 144.121.21.224/304NET-CCF-0-144-121-21-224-30unknown———
└ 144.121.21.232/304NET-CCF--144-121-21-232-30unknown———
└ 144.121.21.248/298LTF--144-121-21-248-29unknown———
└ 144.121.22.0/298LTF-0-144-121-22-0-29unknown———
└ 144.121.22.8/298NET-CCF--144-121-22-8-29unknown———
└ 144.121.22.16/304NET-CCF--144-121-22-16-30unknown———
└ 144.121.22.24/298NET-CCF--144-121-22-24-29unknown———
└ 144.121.22.32/2816NET-144-121-22-32-28unknown———
└ 144.121.22.56/298NET-CCF--144-121-22-56-29unknown———
└ 144.121.22.64/2732NET-144-121-22-64-27unknown———
└ 144.121.22.96/2816NET-144-121-22-96-28unknown———
└ 144.121.22.112/298NET-Z-CCF--144-121-22-112-29unknown———
└ 144.121.22.120/298NET-Z-CCF-0-144-121-22-120-29unknown———
└ 144.121.22.128/304NET-CCF-LT-614-144-121-22-128-30unknown———
└ 144.121.22.140/304NET-CCF-0-144-121-22-140-30unknown———
└ 144.121.22.144/2816NET-144-121-22-144-28unknown———
└ 144.121.22.160/298NET-CCF-0-144-121-22-160-29unknown———
└ 144.121.22.172/304NET-CCF-0-144-121-22-172-30unknown———
└ 144.121.22.192/2816NET-Z-CCF--144-121-22-192-28unknown———
└ 144.121.22.208/298NET-CCF--144-121-22-208-29unknown———
└ 144.121.22.224/2816NET-Z-CCF--144-121-22-224-28unknown———
└ 144.121.23.0/2816NET-144-121-23-0-28unknown———
└ 144.121.23.16/298NET-CCF--144-121-23-16-29unknown———
└ 144.121.23.32/2732NET-CCF---144-121-23-32-27unknown———
└ 144.121.23.64/298NET-CCF--144-121-23-64-29unknown———
└ 144.121.23.72/304NET-CCF--144-121-23-72-30unknown———
└ 144.121.23.80/298NET-CCF-0-144-121-23-80-29unknown———
└ 144.121.23.88/304NET-CCF-0-144-121-23-88-30unknown———
└ 144.121.23.96/304NET-CCF--144-121-23-96-30unknown———
└ 144.121.23.112/298LTF--144-121-23-112-29unknown———
└ 144.121.23.128/2816LTF-0-144-121-23-128-28unknown———
└ 144.121.23.144/298NET-LT-531-144-121-23-144-29unknown———
└ 144.121.23.152/304NET-CCF-0-144-121-23-152-30unknown———
└ 144.121.23.168/304NET-CCF--144-121-23-168-30unknown———
└ 144.121.23.172/304NET-144-121-23-172-30unknown———
└ 144.121.23.176/2816NET-Z-CCF-LT-381-144-121-23-176-28unknown———
└ 144.121.23.192/298NET-CCF--144-121-23-192-29unknown———
└ 144.121.23.200/298LTF-0-144-121-23-200-29unknown———
└ 144.121.23.216/304NET-CCF--144-121-23-216-30unknown———
└ 144.121.23.224/2816NET-144-121-23-224-28unknown———
└ 144.121.23.240/2816NET-144-121-23-240-28unknown———

Network & registry

AnnouncementRouting historyWhois & 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