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Data as of Nov 8, 2026

144.121.64.0/20

9 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
9
0.22% of its addresses · 30 days
Always-on exits
3
33% of its exits
Spread
6 of 16
/24s with at least one exit
Providers
37
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

7.6K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.66.0/2413
144.121.75.0/2412
144.121.65.0/2411
144.121.69.0/2401
144.121.72.0/2401
144.121.78.0/2401

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • ColaProxy
  • Decodo
  • EnigmaProxy
  • FastProxy
  • FlashProxy
  • FloppyData
  • Geonode
  • InfiniteProxies
  • LemonBright
  • LudaxProxy
  • MrScraper
  • NodeMaven
  • NovaProxy
  • Novada
  • Oxylabs
  • PrivateProxy
  • Proxies.fo
  • Proxiware
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • RainProxy
  • Shifter
  • Thordata
  • ThunderProxy
  • VantageProxies

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.64.0/18
since May 2016
AS46887Internet provider35
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
└ 144.121.64.0/298NET-CCF---144-121-64-0-29unknown———
└ 144.121.64.8/298NET-CCF--0-144-121-64-8-29unknown———
└ 144.121.64.16/2816NET-CCF---144-121-64-16-28unknown———
└ 144.121.64.36/304NET-CCF---144-121-64-36-30unknown———
└ 144.121.64.40/298NET-CCF---144-121-64-40-29unknown———
└ 144.121.64.48/2816NET-144-121-64-48-28unknown———
└ 144.121.64.64/298LTF-0-144-121-64-64-29unknown———
└ 144.121.64.72/304NET-CCF---144-121-64-72-30unknown———
└ 144.121.64.92/304NET-CCF--SD-49517-144-121-64-92-30unknown———
└ 144.121.64.96/2732NET-CCF---144-121-64-96-27unknown———
└ 144.121.64.128/2816NET-CCF-144-121-64-128-28unknown———
└ 144.121.64.144/298NET-CCF--0-144-121-64-144-29unknown———
└ 144.121.64.152/298NET-CCF---144-121-64-152-29unknown———
└ 144.121.64.160/2816NET-CCF---144-121-64-160-28unknown———
└ 144.121.64.176/304NET-CCF---144-121-64-176-30unknown———
└ 144.121.64.180/304NET-CCF--0-144-121-64-180-30unknown———
└ 144.121.64.184/298NET-CCF--0-144-121-64-184-29unknown———
└ 144.121.64.192/298NET-144-121-64-192-29unknown———
└ 144.121.64.216/304NET-CCF---144-121-64-216-30unknown———
└ 144.121.64.220/304NET-CCF--0-144-121-64-220-30unknown———
└ 144.121.64.224/2816NET-144-121-64-224-28unknown———
└ 144.121.64.244/304NET-CCF---144-121-64-244-30unknown———
└ 144.121.64.248/298NET-CCF--LT-063-144-121-64-248-29unknown———
└ 144.121.65.0/2664NET-144-121-65-0-26unknown———
└ 144.121.65.68/304NET-CCF-LT-210-144-121-65-68-30unknown———
└ 144.121.65.76/304NET-CCF---144-121-65-76-30unknown———
└ 144.121.65.84/304NET-CCF---144-121-65-84-30unknown———
└ 144.121.65.88/298NET-CCF--0-144-121-65-88-29unknown———
└ 144.121.65.96/2732NET-CCF--LT-614-144-121-65-96-27unknown———
└ 144.121.65.128/298NET-CCF--0-144-121-65-128-29unknown———
└ 144.121.65.140/304NET-CCF---144-121-65-140-30unknown———
└ 144.121.65.148/304NET-CCF--0-144-121-65-148-30unknown———
└ 144.121.65.160/298NET-144-121-65-160-29unknown———
└ 144.121.65.168/304NET-CCF--LT-405-144-121-65-168-30unknown———
└ 144.121.65.176/298NET-CCF---144-121-65-176-29unknown———
└ 144.121.65.184/298NET-CCF---144-121-65-184-29unknown———
└ 144.121.65.192/298LTF--144-121-65-192-29unknown———
└ 144.121.65.208/2816NET-CCF--SD-50549-144-121-65-208-28unknown———
└ 144.121.65.228/304NET-CCF--0-144-121-65-228-30unknown———
└ 144.121.65.232/298NET-CCF--0-144-121-65-232-29unknown———
└ 144.121.65.240/298NET-CCF---144-121-65-240-29unknown———
└ 144.121.65.248/298LTF--144-121-65-248-29unknown———
└ 144.121.66.4/304NET-CCF---144-121-66-4-30unknown———
└ 144.121.66.8/298NET-144-121-66-8-29unknown———
└ 144.121.66.16/298NET-144-121-66-16-29unknown———
└ 144.121.66.24/298NET-144-121-66-24-29unknown———
└ 144.121.66.32/304NET-CCF---144-121-66-32-30unknown———
└ 144.121.66.52/304NET-CCF--0-144-121-66-52-30unknown———
└ 144.121.66.56/298NET-144-121-66-56-29unknown———
└ 144.121.66.64/298NET-Z-CCF-0-144-121-66-64-29unknown———
└ 144.121.66.72/298NET-144-121-66-72-29unknown———
└ 144.121.66.96/304NET-Z-CCF-0-144-121-66-96-30unknown———
└ 144.121.66.100/304NET-CCF--0-144-121-66-100-30unknown———
└ 144.121.66.104/298NET-CCF--0-144-121-66-104-29unknown———
└ 144.121.66.124/304NET-CCF--0-144-121-66-124-30unknown———
└ 144.121.66.128/2816NET-144-121-66-128-28unknown———
└ 144.121.66.144/298NET-CCF---144-121-66-144-29unknown———
└ 144.121.66.160/298NET-CCF---144-121-66-160-29unknown———
└ 144.121.66.176/2816NET-144-121-66-176-28unknown———
└ 144.121.66.196/304NET-CCF---144-121-66-196-30unknown———
└ 144.121.66.200/298NET-144-121-66-200-29unknown———
└ 144.121.66.216/298LTF--144-121-66-216-29unknown———
└ 144.121.66.232/298LTF-0-144-121-66-232-29unknown———
└ 144.121.66.240/304NET-CCF--0-144-121-66-240-30unknown———
└ 144.121.66.244/304NET-CCF---144-121-66-244-30unknown———
└ 144.121.67.0/25128NET-144-121-67-0-25unknown———
└ 144.121.67.128/25128NET-144-121-67-128-25unknown———
└ 144.121.68.0/298NET-CCF---144-121-68-0-29unknown———
└ 144.121.68.8/298NET-CCF--0-144-121-68-8-29unknown———
└ 144.121.68.16/2816NET-CCF--144-121-68-16-28unknown———
└ 144.121.68.40/298NET-CCF--0-144-121-68-40-29unknown———
└ 144.121.68.56/298NET-144-121-68-56-29unknown———
└ 144.121.68.72/298LTF-0-144-121-68-72-29unknown———
└ 144.121.68.88/298LTF--144-121-68-88-29unknown———
└ 144.121.68.96/304NET-CCF---144-121-68-96-30unknown———
└ 144.121.68.112/298LTF--144-121-68-112-29unknown———
└ 144.121.68.120/298NET-CCF--0-144-121-68-120-29unknown———
└ 144.121.68.136/298NET-CCF--0-144-121-68-136-29unknown———
└ 144.121.68.144/2816NET-144-121-68-144-28unknown———
└ 144.121.68.164/304NET-CCF--0-144-121-68-164-30unknown———
└ 144.121.68.172/304NET-Z-CCF--144-121-68-172-30unknown———
└ 144.121.68.184/298NET-Z-CCF--144-121-68-184-29unknown———
└ 144.121.68.192/2664NET-SD-50701-144-121-68-192-26unknown———
└ 144.121.69.0/2732NET-LT-150-144-121-69-0-27unknown———
└ 144.121.69.32/298NET-CCF---144-121-69-32-29unknown———
└ 144.121.69.40/298NET-CCF---144-121-69-40-29unknown———
└ 144.121.69.48/304NET-CCF--0-144-121-69-48-30unknown———
└ 144.121.69.52/304NET-CCF--0-144-121-69-52-30unknown———
└ 144.121.69.64/298LTF--144-121-69-64-29unknown———
└ 144.121.69.76/304NET-CCF---144-121-69-76-30unknown———
└ 144.121.69.80/298NET-CCF--0-144-121-69-80-29unknown———
└ 144.121.69.88/298LTF--144-121-69-88-29unknown———
└ 144.121.69.108/304NET-CCF-144-121-69-108-30unknown———
└ 144.121.69.128/304NET-CCF---144-121-69-128-30unknown———
└ 144.121.69.144/298NET-CCF--0-144-121-69-144-29unknown———
└ 144.121.69.152/298NET-CCF---144-121-69-152-29unknown———
└ 144.121.69.160/2816NET-144-121-69-160-28unknown———
└ 144.121.69.176/2816NET-144-121-69-176-28unknown———
└ 144.121.69.208/2816LTF-144-121-69-208-28unknown———
└ 144.121.69.224/298NET-CCF---144-121-69-224-29unknown———
└ 144.121.69.232/298NET-CCF--0-144-121-69-232-29unknown———
└ 144.121.70.16/304NET-Z-CCF--144-121-70-16-30unknown———
└ 144.121.70.28/304NET-Z-CCF-0-144-121-70-28-30unknown———
└ 144.121.70.40/298NET-144-121-70-40-29unknown———
└ 144.121.70.64/2816LTF-0-144-121-70-64-28unknown———
└ 144.121.70.80/2816LTF-0-144-121-70-80-28unknown———
└ 144.121.70.112/2816NET-CCF--SD-50061-144-121-70-112-28unknown———
└ 144.121.70.160/298NET-CCF---144-121-70-160-29unknown———
└ 144.121.70.168/298NET-CCF---144-121-70-168-29unknown———
└ 144.121.70.176/298NET-CCF---144-121-70-176-29unknown———
└ 144.121.70.184/298NET-CCF---144-121-70-184-29unknown———
└ 144.121.70.192/304NET-CCF---144-121-70-192-30unknown———
└ 144.121.70.200/298NET-CCF---144-121-70-200-29unknown———
└ 144.121.70.224/2816NET-CCF--0-144-121-70-224-28unknown———
└ 144.121.70.240/304NET-Z-CCF--144-121-70-240-30unknown———
└ 144.121.70.248/298NET-144-121-70-248-29unknown———
└ 144.121.71.0/298NET-CCF---144-121-71-0-29unknown———
└ 144.121.71.8/298NET-CCF---144-121-71-8-29unknown———
└ 144.121.71.16/2816NET-CCF---144-121-71-16-28unknown———
└ 144.121.71.32/298NET-CCF-0-144-121-71-32-29unknown———
└ 144.121.71.40/304NET-CCF--144-121-71-40-30unknown———
└ 144.121.71.48/2816NET-CCF--LT-192-144-121-71-48-28unknown———
└ 144.121.71.64/298NET-CCF---144-121-71-64-29unknown———
└ 144.121.71.72/298NET-CCF--0-144-121-71-72-29unknown———
└ 144.121.71.88/298NET-CCF---144-121-71-88-29unknown———
└ 144.121.71.96/298NET-CCF--0-144-121-71-96-29unknown———
└ 144.121.71.104/298NET-CCF--0-144-121-71-104-29unknown———
└ 144.121.71.112/298NET-CCF---144-121-71-112-29unknown———
└ 144.121.71.120/298NET-CCF---144-121-71-120-29unknown———
└ 144.121.71.128/304NET-CCF---144-121-71-128-30unknown———
└ 144.121.71.136/298NET-CCF--SD-50549-144-121-71-136-29unknown———
└ 144.121.71.144/2816NET-CCF--0-144-121-71-144-28unknown———
└ 144.121.71.160/298LTF-168054-INET-CCF---METTEL-144-121-71-160-29unknown———
└ 144.121.71.168/298NET-CCF---144-121-71-168-29unknown———
└ 144.121.71.176/298LTF-0-144-121-71-176-29unknown———
└ 144.121.71.184/298NET-CCF--0-144-121-71-184-29unknown———
└ 144.121.71.192/298LTF-0-144-121-71-192-29unknown———
└ 144.121.71.208/2816NET-Z-CCF-LT-476-144-121-71-208-28unknown———
└ 144.121.71.240/2816NET-CCF--0-144-121-71-240-28unknown———
└ 144.121.72.0/298NET-144-121-72-0-29unknown———
└ 144.121.72.16/298NET-144-121-72-16-29unknown———
└ 144.121.72.40/298NET-Z-CCF-0-144-121-72-40-29unknown———
└ 144.121.72.48/2816NET-144-121-72-48-28unknown———
└ 144.121.72.64/2816NET-144-121-72-64-28unknown———
└ 144.121.72.80/304NET-CCF-0-144-121-72-80-30unknown———
└ 144.121.72.84/304NET-CCF--0-144-121-72-84-30unknown———
└ 144.121.72.88/304NET-CCF--0-144-121-72-88-30unknown———
└ 144.121.72.96/304NET-CCF--0-144-121-72-96-30unknown———
└ 144.121.72.100/304NET-CCF---144-121-72-100-30unknown———
└ 144.121.72.104/298NET-144-121-72-104-29unknown———
└ 144.121.72.124/304NET-0-144-121-72-124-30unknown———
└ 144.121.72.128/2816LTF-0-144-121-72-128-28unknown———
└ 144.121.72.144/298NET-CCF--0-144-121-72-144-29unknown———
└ 144.121.72.152/298NET-Z-CCF--144-121-72-152-29unknown———
└ 144.121.72.160/298NET-CCF---144-121-72-160-29unknown———
└ 144.121.72.168/298NET-CCF---144-121-72-168-29unknown———
└ 144.121.72.176/2816LTF-0-144-121-72-176-28unknown———
└ 144.121.72.192/298NET-CCF---144-121-72-192-29unknown———
└ 144.121.72.216/298LTF--144-121-72-216-29unknown———
└ 144.121.72.224/2732NET-144-121-72-224-27unknown———
└ 144.121.74.0/304NET-CCF--0-144-121-74-0-30unknown———
└ 144.121.74.8/298NET-144-121-74-8-29unknown———
└ 144.121.74.16/304NET-CCF--0-144-121-74-16-30unknown———
└ 144.121.74.24/298LTF--144-121-74-24-29unknown———
└ 144.121.74.32/2816NET-CCF---144-121-74-32-28unknown———
└ 144.121.74.56/298LTF--144-121-74-56-29unknown———
└ 144.121.74.64/298NET-144-121-74-64-29unknown———
└ 144.121.74.72/298NET-CCF--144-121-74-72-29unknown———
└ 144.121.74.80/298NET-CCF--0-144-121-74-80-29unknown———
└ 144.121.74.88/304NET-CCF--0-144-121-74-88-30unknown———
└ 144.121.74.116/304NET-CCF---144-121-74-116-30unknown———
└ 144.121.74.120/298LTF--144-121-74-120-29unknown———
└ 144.121.74.160/2816NET-CCF---144-121-74-160-28unknown———
└ 144.121.74.176/298NET-CCF---144-121-74-176-29unknown———
└ 144.121.74.192/304NET-CCF---144-121-74-192-30unknown———
└ 144.121.74.196/304NET-Z-CCF--144-121-74-196-30unknown———
└ 144.121.74.200/298NET-CCF---144-121-74-200-29unknown———
└ 144.121.74.208/304NET-CCF--0-144-121-74-208-30unknown———
└ 144.121.74.216/298NET-CCF--0-144-121-74-216-29unknown———
└ 144.121.74.232/298LTF-SD-50942-144-121-74-232-29unknown———
└ 144.121.74.240/298LTF-0-144-121-74-240-29unknown———
└ 144.121.74.248/298LTF-0-144-121-74-248-29unknown———
└ 144.121.75.0/298NET-CCF--0-144-121-75-0-29unknown———
└ 144.121.75.16/298NET-CCF---144-121-75-16-29unknown———
└ 144.121.75.24/298NET-144-121-75-24-29unknown———
└ 144.121.75.32/304NET-CCF---144-121-75-32-30unknown———
└ 144.121.75.40/298NET-144-121-75-40-29unknown———
└ 144.121.75.48/298NET-CCF---144-121-75-48-29unknown———
└ 144.121.75.56/298NET-144-121-75-56-29unknown———
└ 144.121.75.80/304NET-CCF--144-121-75-80-30unknown———
└ 144.121.75.88/298LTF--144-121-75-88-29unknown———
└ 144.121.75.104/304NET-Z-CCF-LT-476-144-121-75-104-30unknown———
└ 144.121.75.112/304NET-CCF--0-144-121-75-112-30unknown———
└ 144.121.75.128/304NET-CCF--SD-50975-144-121-75-128-30unknown———
└ 144.121.75.132/304NET-CCF--0-144-121-75-132-30unknown———
└ 144.121.75.136/298NET-CCF--SD-50975-144-121-75-136-29unknown———
└ 144.121.75.144/298NET-CCF--0-144-121-75-144-29unknown———
└ 144.121.75.152/298NET-CCF--0-144-121-75-152-29unknown———
└ 144.121.75.160/298NET-CCF--0-144-121-75-160-29unknown———
└ 144.121.75.168/298NET-CCF--0-144-121-75-168-29unknown———
← Previous1–200 of 300 · page 1 of 2Next →

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