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Data as of Nov 8, 2026

144.121.8.0/22

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
Spread
2 of 4
/24s with at least one exit
Providers
9
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

77 observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.8.0/2401
144.121.10.0/2401

Proxy providers listing exits

  • AnyIP
  • Bright Data
  • CliProxy
  • FloppyData
  • Geonode
  • IPFly
  • IPPeak
  • NovProxy
  • PuraRoute

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 provider131
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
└ 144.121.8.0/298LTF-0-144-121-8-0-29unknown———
└ 144.121.8.8/304NET-CCF-LT-508-144-121-8-8-30unknown———
└ 144.121.8.16/298NET-CCF--144-121-8-16-29unknown———
└ 144.121.8.28/304NET-CCF--0-144-121-8-28-30unknown———
└ 144.121.8.32/2816NET-144-121-8-32-28unknown———
└ 144.121.8.48/304NET-CCF--144-121-8-48-30unknown———
└ 144.121.8.52/304NET-CCF--144-121-8-52-30unknown———
└ 144.121.8.56/298NET-CCF--144-121-8-56-29unknown———
└ 144.121.8.64/304NET-CCF---144-121-8-64-30unknown———
└ 144.121.8.68/304NET-CCF-0-144-121-8-68-30unknown———
└ 144.121.8.72/298LTF--144-121-8-72-29unknown———
└ 144.121.8.80/298LTF--144-121-8-80-29unknown———
└ 144.121.8.88/298NET-CCF---144-121-8-88-29unknown———
└ 144.121.8.96/304NET-CCF-0-144-121-8-96-30unknown———
└ 144.121.8.104/298NET-CCF--144-121-8-104-29unknown———
└ 144.121.8.112/298LTF--144-121-8-112-29unknown———
└ 144.121.8.120/298NET-144-121-8-120-29unknown———
└ 144.121.8.128/2816NET-144-121-8-128-28unknown———
└ 144.121.8.144/298NET-CCF--144-121-8-144-29unknown———
└ 144.121.8.156/304NET-CCF---144-121-8-156-30unknown———
└ 144.121.8.160/2732NET-144-121-8-160-27unknown———
└ 144.121.8.192/304NET-CCF-0-144-121-8-192-30unknown———
└ 144.121.8.196/304NET-CCF--144-121-8-196-30unknown———
└ 144.121.8.200/304NET-CCF--SD-50920-144-121-8-200-30unknown———
└ 144.121.8.204/304NET-CCF---144-121-8-204-30unknown———
└ 144.121.8.208/304NET-CCF--144-121-8-208-30unknown———
└ 144.121.8.224/2732LTF--144-121-8-224-27unknown———
└ 144.121.9.0/298LTF--144-121-9-0-29unknown———
└ 144.121.9.8/304NET-CCF---144-121-9-8-30unknown———
└ 144.121.9.12/304NET-CCF-0-144-121-9-12-30unknown———
└ 144.121.9.16/298LTF-0-144-121-9-16-29unknown———
└ 144.121.9.24/298NET-144-121-9-24-29unknown———
└ 144.121.9.32/298LTF--144-121-9-32-29unknown———
└ 144.121.9.40/298NET-CCF-0-144-121-9-40-29unknown———
└ 144.121.9.48/2816LTF--144-121-9-48-28unknown———
└ 144.121.9.64/298NET-CCF---144-121-9-64-29unknown———
└ 144.121.9.72/304NET-CCF---144-121-9-72-30unknown———
└ 144.121.9.96/2732NET-144-121-9-96-27unknown———
└ 144.121.9.136/298NET-CCF---144-121-9-136-29unknown———
└ 144.121.9.144/298LTF--144-121-9-144-29unknown———
└ 144.121.9.152/298LTF--144-121-9-152-29unknown———
└ 144.121.9.168/298NET-144-121-9-168-29unknown———
└ 144.121.9.176/298NET-CCF---144-121-9-176-29unknown———
└ 144.121.9.184/298NET-144-121-9-184-29unknown———
└ 144.121.9.192/298NET-CCF-LT-508-144-121-9-192-29unknown———
└ 144.121.9.200/298LTF--144-121-9-200-29unknown———
└ 144.121.9.208/304NET-CCF---144-121-9-208-30unknown———
└ 144.121.9.212/304NET-CCF--0-144-121-9-212-30unknown———
└ 144.121.9.216/298NET-CCF---144-121-9-216-29unknown———
└ 144.121.9.224/304NET-Z-CCF--144-121-9-224-30unknown———
└ 144.121.9.228/304NET-CCF-SD-50061-144-121-9-228-30unknown———
└ 144.121.9.232/298NET-CCF--144-121-9-232-29unknown———
└ 144.121.9.240/298NET-CCF-0-144-121-9-240-29unknown———
└ 144.121.10.0/298NET-CCF---144-121-10-0-29unknown———
└ 144.121.10.8/298NET-144-121-10-8-29unknown———
└ 144.121.10.24/298NET-CCF--0-144-121-10-24-29unknown———
└ 144.121.10.32/2732NET-144-121-10-32-27unknown———
└ 144.121.10.68/304NET-CCF-0-144-121-10-68-30unknown———
└ 144.121.10.72/298LTF--144-121-10-72-29unknown———
└ 144.121.10.80/298LTF--144-121-10-80-29unknown———
└ 144.121.10.88/298NET-CCF--144-121-10-88-29unknown———
└ 144.121.10.96/2816LTF--144-121-10-96-28unknown———
└ 144.121.10.112/304NET-CCF--0-144-121-10-112-30unknown———
└ 144.121.10.120/298NET-CCF---144-121-10-120-29unknown———
└ 144.121.10.128/298NET-CCF--144-121-10-128-29unknown———
└ 144.121.10.136/298NET-CCF--0-144-121-10-136-29unknown———
└ 144.121.10.144/298NET-144-121-10-144-29unknown———
└ 144.121.10.152/298NET-CCF---144-121-10-152-29unknown———
└ 144.121.10.160/304NET-CCF---144-121-10-160-30unknown———
└ 144.121.10.168/304NET-CCF---144-121-10-168-30unknown———
└ 144.121.10.172/304NET-CCF--144-121-10-172-30unknown———
└ 144.121.10.176/2816LTF-LT-187-144-121-10-176-28unknown———
└ 144.121.10.192/2664NET-144-121-10-192-26unknown———
└ 144.121.11.4/304NET-CCF---144-121-11-4-30unknown———
└ 144.121.11.12/304NET-CCF--144-121-11-12-30unknown———
└ 144.121.11.16/2816NET-144-121-11-16-28unknown———
└ 144.121.11.32/2816NET-CCF-0-144-121-11-32-28unknown———
└ 144.121.11.52/304NET-Z-CCF-0-144-121-11-52-30unknown———
└ 144.121.11.56/304NET-CCF--0-144-121-11-56-30unknown———
└ 144.121.11.60/304NET-CCF-0-144-121-11-60-30unknown———
└ 144.121.11.64/2816NET-CCF--0-144-121-11-64-28unknown———
└ 144.121.11.80/298NET-CCF-0-144-121-11-80-29unknown———
└ 144.121.11.88/298LTF--144-121-11-88-29unknown———
└ 144.121.11.96/2816LTF--144-121-11-96-28unknown———
└ 144.121.11.112/2816LTF--144-121-11-112-28unknown———
└ 144.121.11.128/2816NET-144-121-11-128-28unknown———
└ 144.121.11.192/298LTF--144-121-11-192-29unknown———
└ 144.121.11.240/298NET-144-121-11-240-29unknown———
└ 144.121.11.248/298LTF--144-121-11-248-29unknown———

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