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Data as of Nov 8, 2026

144.121.80.0/20

8 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
81% of it

Residential-proxy exits

Proxy exits
8
0.20% of its addresses · 30 days
Always-on exits
2
25% of its exits
Spread
6 of 16
/24s with at least one exit
Providers
41
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

5.1K observations
  • Business
  • Internet provider

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.82.0/2412
144.121.93.0/2411
144.121.81.0/2402
144.121.80.0/2401
144.121.89.0/2401
144.121.91.0/2401

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • Byteful
  • CliProxy
  • ColaProxy
  • DataImpulse
  • EZProxies
  • EnigmaProxy
  • FastProxy
  • FlashProxy
  • FloppyData
  • Geonode
  • GloryCloud
  • HideProxy
  • IPFly
  • IPPeak
  • InfiniteProxies
  • LemonBright
  • NSocks
  • Novada
  • PrivateProxy
  • Proxy4U
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • PuraRoute
  • RainProxy
  • RapidProxy
  • RolaProxy
  • Shifter
  • SwiftProxy
  • Thordata
  • ThunderProxy
  • VantageProxies
  • VitalExclusive

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
More specific

Announcements inside

PrefixOriginTypeProxy exitsHolderRPKI
144.121.86.0/24
since Nov 2016
AS46887UnknownZayo Bandwidth
144.121.89.0/24
since Jan 2017
AS62678Business1Zayo Bandwidth
144.121.95.0/24
since Mar 2017
AS63329BusinessZayo 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
└ 144.121.80.4/304NET-CCF-0-144-121-80-4-30unknown———
└ 144.121.80.8/298LTF-0-144-121-80-8-29unknown———
└ 144.121.80.32/298NET-CCF---144-121-80-32-29unknown———
└ 144.121.80.40/298LTF-144-121-80-40-29unknown———
└ 144.121.80.48/304NET-CCF---144-121-80-48-30unknown———
└ 144.121.80.56/298NET-CCF---144-121-80-56-29unknown———
└ 144.121.80.68/304NET-CCF--0-144-121-80-68-30unknown———
└ 144.121.80.72/298NET-0-144-121-80-72-29unknown———
└ 144.121.80.80/298NET-CCF---144-121-80-80-29unknown———
└ 144.121.80.88/298NET-CCF--0-144-121-80-88-29unknown———
└ 144.121.80.96/2816NET-144-121-80-96-28unknown———
└ 144.121.80.112/304NET-CCF--0-144-121-80-112-30unknown———
└ 144.121.80.120/298NET-144-121-80-120-29unknown———
└ 144.121.80.136/298LTF--144-121-80-136-29unknown———
└ 144.121.80.160/2732NET-LT-819-144-121-80-160-27unknown———
└ 144.121.80.192/2732NET-144-121-80-192-27unknown———
└ 144.121.80.224/2732NET-144-121-80-224-27unknown———
└ 144.121.81.0/2816LTF--144-121-81-0-28unknown———
└ 144.121.81.16/2816NET-144-121-81-16-28unknown———
└ 144.121.81.32/298LTF-SD-51079-144-121-81-32-29unknown———
└ 144.121.81.64/2664NET-144-121-81-64-26unknown———
└ 144.121.81.128/298NET-CCF--0-144-121-81-128-29unknown———
└ 144.121.81.136/298NET-CCF---144-121-81-136-29unknown———
└ 144.121.81.152/298NET-144-121-81-152-29unknown———
└ 144.121.81.160/298NET-144-121-81-160-29unknown———
└ 144.121.81.168/298NET-144-121-81-168-29unknown———
└ 144.121.81.176/2816NET-144-121-81-176-28unknown———
└ 144.121.81.192/304NET-Z-CCF--144-121-81-192-30unknown———
└ 144.121.81.200/304NET-CCF--0-144-121-81-200-30unknown———
└ 144.121.81.204/304NET-CCF--0-144-121-81-204-30unknown———
└ 144.121.81.224/2816NET-Z-CCF--144-121-81-224-28unknown———
└ 144.121.81.240/2816NET-CCF---144-121-81-240-28unknown———
└ 144.121.82.4/304NET-CCF-0-144-121-82-4-30unknown———
└ 144.121.82.8/298NET-CCF--0-144-121-82-8-29unknown———
└ 144.121.82.16/298NET-CCF-0-144-121-82-16-29unknown———
└ 144.121.82.24/298NET-CCF---144-121-82-24-29unknown———
└ 144.121.82.32/2732NET-144-121-82-32-27unknown———
└ 144.121.82.64/298NET-CCF---144-121-82-64-29unknown———
└ 144.121.82.72/298NET-LT-780-144-121-82-72-29unknown———
└ 144.121.82.80/304NET-CCF--0-144-121-82-80-30unknown———
└ 144.121.82.100/304NET-CCF--0-144-121-82-100-30unknown———
└ 144.121.82.104/298NET-144-121-82-104-29unknown———
└ 144.121.82.124/304NET-CCF--0-144-121-82-124-30unknown———
└ 144.121.82.128/2816NET-LT-283-144-121-82-128-28unknown———
└ 144.121.82.144/298NET-144-121-82-144-29unknown———
└ 144.121.82.164/304NET-CCF--0-144-121-82-164-30unknown———
└ 144.121.82.168/298NET-144-121-82-168-29unknown———
└ 144.121.82.176/298NET-144-121-82-176-29unknown———
└ 144.121.82.188/304NET-CCF--144-121-82-188-30unknown———
└ 144.121.82.192/298NET-CCF---144-121-82-192-29unknown———
└ 144.121.82.200/298NET-144-121-82-200-29unknown———
└ 144.121.82.208/298NET-LT-162-144-121-82-208-29unknown———
└ 144.121.82.220/304NET-CCF--0-144-121-82-220-30unknown———
└ 144.121.82.228/304NET-CCF---144-121-82-228-30unknown———
└ 144.121.82.232/298LTF-144-121-82-232-29unknown———
└ 144.121.83.0/2732NET-Z-CCF--144-121-83-0-27unknown———
└ 144.121.83.32/304NET-CCF--0-144-121-83-32-30unknown———
└ 144.121.83.40/298NET-CCF--0-144-121-83-40-29unknown———
└ 144.121.83.48/298LTF--144-121-83-48-29unknown———
└ 144.121.83.56/298NET-144-121-83-56-29unknown———
└ 144.121.83.64/298LTF--144-121-83-64-29unknown———
└ 144.121.83.72/298LTF--144-121-83-72-29unknown———
└ 144.121.83.80/304NET-CCF---144-121-83-80-30unknown———
└ 144.121.83.88/298LTF--144-121-83-88-29unknown———
└ 144.121.83.100/304NET-Z-CCF-0-144-121-83-100-30unknown———
└ 144.121.83.104/298NET-CCF--0-144-121-83-104-29unknown———
└ 144.121.83.112/298NET-144-121-83-112-29unknown———
└ 144.121.83.120/298LTF-0-144-121-83-120-29unknown———
└ 144.121.83.128/298NET-CCF--0-144-121-83-128-29unknown———
└ 144.121.83.136/298LTF-0-144-121-83-136-29unknown———
└ 144.121.83.156/304NET-CCF---144-121-83-156-30unknown———
└ 144.121.83.160/298LTF-LT-614-144-121-83-160-29unknown———
└ 144.121.83.168/298NET-144-121-83-168-29unknown———
└ 144.121.83.176/2816NET-144-121-83-176-28unknown———
└ 144.121.83.192/2732NET-CCF---144-121-83-192-27unknown———
└ 144.121.83.224/304NET-CCF--0-144-121-83-224-30unknown———
└ 144.121.83.232/298NET-CCF--0-144-121-83-232-29unknown———
└ 144.121.83.240/298NET-CCF--144-121-83-240-29unknown———
└ 144.121.83.248/298NET-CCF--144-121-83-248-29unknown———
└ 144.121.84.0/298NET-CCF---144-121-84-0-29unknown———
└ 144.121.84.8/298NET-CCF--144-121-84-8-29unknown———
└ 144.121.84.16/298NET-CCF---144-121-84-16-29unknown———
└ 144.121.84.28/304NET-CCF---144-121-84-28-30unknown———
└ 144.121.84.48/298LTF-0-144-121-84-48-29unknown———
└ 144.121.84.56/298LTF-SD-49798-144-121-84-56-29unknown———
└ 144.121.84.80/298NET-CCF--0-144-121-84-80-29unknown———
└ 144.121.84.88/298LTF--144-121-84-88-29unknown———
└ 144.121.84.100/304NET-CCF---144-121-84-100-30unknown———
└ 144.121.84.104/298NET-144-121-84-104-29unknown———
└ 144.121.84.112/298LTF--144-121-84-112-29unknown———
└ 144.121.84.120/304NET-CCF--0-144-121-84-120-30unknown———
└ 144.121.84.124/304NET-CCF--0-144-121-84-124-30unknown———
└ 144.121.84.128/298NET-CCF---144-121-84-128-29unknown———
└ 144.121.84.136/298NET-CCF--0-144-121-84-136-29unknown———
└ 144.121.84.144/2816NET-CCF--144-121-84-144-28unknown———
└ 144.121.84.160/2816NET-CCF--144-121-84-160-28unknown———
└ 144.121.84.176/298NET-CCF--144-121-84-176-29unknown———
└ 144.121.84.184/298NET-CCF--144-121-84-184-29unknown———
└ 144.121.84.192/298NET-CCF-144-121-84-192-29unknown———
└ 144.121.84.200/298NET-CCF--0-144-121-84-200-29unknown———
└ 144.121.84.208/2816NET-CCF--0-144-121-84-208-28unknown———
└ 144.121.84.224/298NET-CCF---144-121-84-224-29unknown———
└ 144.121.84.232/298NET-CCF--0-144-121-84-232-29unknown———
└ 144.121.84.240/298NET-CCF--0-144-121-84-240-29unknown———
└ 144.121.84.248/298NET-CCF--0-144-121-84-248-29unknown———
└ 144.121.85.8/304NET-CCF--0-144-121-85-8-30unknown———
└ 144.121.85.16/298NET-CCF---144-121-85-16-29unknown———
└ 144.121.85.24/298NET-CCF---144-121-85-24-29unknown———
└ 144.121.85.32/2816NET-CCF--0-144-121-85-32-28unknown———
└ 144.121.85.48/298NET-144-121-85-48-29unknown———
└ 144.121.85.56/298NET-144-121-85-56-29unknown———
└ 144.121.85.64/298NET-CCF---144-121-85-64-29unknown———
└ 144.121.85.80/298NET-CCF--0-144-121-85-80-29unknown———
└ 144.121.85.88/298NET-CCF--0-144-121-85-88-29unknown———
└ 144.121.85.96/298LTF--144-121-85-96-29unknown———
└ 144.121.85.112/298NET-CCF--0-144-121-85-112-29unknown———
└ 144.121.85.124/304NET-Z-CCF--144-121-85-124-30unknown———
└ 144.121.85.128/304NET-CCF--0-144-121-85-128-30unknown———
└ 144.121.85.136/298LTF--144-121-85-136-29unknown———
└ 144.121.85.144/298LTF-0-144-121-85-144-29unknown———
└ 144.121.85.152/298LTF--144-121-85-152-29unknown———
└ 144.121.85.160/304NET-CCF--0-144-121-85-160-30unknown———
└ 144.121.85.176/298NET-CCF---144-121-85-176-29unknown———
└ 144.121.85.200/298NET-Z-CCF--144-121-85-200-29unknown———
└ 144.121.85.208/298LTF--144-121-85-208-29unknown———
└ 144.121.85.224/2816NET-CCF---144-121-85-224-28unknown———
└ 144.121.85.240/298NET-144-121-85-240-29unknown———
└ 144.121.85.248/298LTF-0-144-121-85-248-29unknown———
└ 144.121.86.0/24256NET-144-121-86-0-24Simons Foundation (C06255073) · USReassignedNov 9, 2016abuse@zayo.com
via ZAYO-CCF-144-121-0-0
└ 144.121.87.24/298LTF--144-121-87-24-29unknown———
└ 144.121.87.32/304NET-CCF---144-121-87-32-30unknown———
└ 144.121.87.40/298NET-CCF--0-144-121-87-40-29unknown———
└ 144.121.87.56/298NET-144-121-87-56-29unknown———
└ 144.121.87.64/2732NET-144-121-87-64-27unknown———
└ 144.121.87.96/304NET-CCF--0-144-121-87-96-30unknown———
└ 144.121.87.116/304NET-CCF---144-121-87-116-30unknown———
└ 144.121.87.128/2816NET-144-121-87-128-28unknown———
└ 144.121.87.152/298LTF-0-144-121-87-152-29unknown———
└ 144.121.87.168/304NET-CCF--0-144-121-87-168-30unknown———
└ 144.121.87.172/304NET-CCF--0-144-121-87-172-30unknown———
└ 144.121.87.176/298LTF--144-121-87-176-29unknown———
└ 144.121.87.184/298LTF--144-121-87-184-29unknown———
└ 144.121.87.192/2816NET-144-121-87-192-28unknown———
└ 144.121.87.208/298NET-CCF---144-121-87-208-29unknown———
└ 144.121.87.216/298NET-CCF---144-121-87-216-29unknown———
└ 144.121.87.224/304NET-CCF--0-144-121-87-224-30unknown———
└ 144.121.87.232/298NET-144-121-87-232-29unknown———
└ 144.121.87.240/298NET-144-121-87-240-29unknown———
└ 144.121.87.248/298NET-144-121-87-248-29unknown———
└ 144.121.88.0/2816LTF-0-144-121-88-0-28unknown———
└ 144.121.88.16/2816NET-144-121-88-16-28unknown———
└ 144.121.88.32/2816NET-144-121-88-32-28unknown———
└ 144.121.88.60/304NET-CCF--144-121-88-60-30unknown———
└ 144.121.88.64/2816LTF--144-121-88-64-28unknown———
└ 144.121.88.80/298NET-CCF---144-121-88-80-29unknown———
└ 144.121.88.96/298NET-CCF---144-121-88-96-29unknown———
└ 144.121.88.104/298NET-144-121-88-104-29unknown———
└ 144.121.88.116/304NET-CCF--0-144-121-88-116-30unknown———
└ 144.121.88.120/298LTF-144-121-88-120-29unknown———
└ 144.121.88.128/298LTF--144-121-88-128-29unknown———
└ 144.121.88.140/304NET-CCF--0-144-121-88-140-30unknown———
└ 144.121.88.148/304NET-CCF-0-144-121-88-148-30unknown———
└ 144.121.88.160/298NET-CCF---144-121-88-160-29unknown———
└ 144.121.88.192/304NET-CCF---144-121-88-192-30unknown———
└ 144.121.88.200/298NET-CCF---144-121-88-200-29unknown———
└ 144.121.88.208/2816NET-CCF---144-121-88-208-28unknown———
└ 144.121.88.224/304NET-CCF--144-121-88-224-30unknown———
└ 144.121.88.240/298NET-144-121-88-240-29unknown———
└ 144.121.89.0/24256NET-144-121-89-0-24Horace Mann School (C06262079) · USReassignedNov 21, 2016abuse@zayo.com
via ZAYO-CCF-144-121-0-0
└ 144.121.90.0/298NET-CCF--144-121-90-0-29unknown———
└ 144.121.90.8/298NET-CCF-0-144-121-90-8-29unknown———
└ 144.121.90.16/298NET-CCF--144-121-90-16-29unknown———
└ 144.121.90.24/298NET-CCF-0-144-121-90-24-29unknown———
└ 144.121.90.32/298NET-CCF--SD-50961-144-121-90-32-29unknown———
└ 144.121.90.48/298NET-144-121-90-48-29unknown———
└ 144.121.90.56/298NET-CCF--0-144-121-90-56-29unknown———
└ 144.121.90.64/298NET-CCF---144-121-90-64-29unknown———
└ 144.121.90.72/298NET-CCF--0-144-121-90-72-29unknown———
└ 144.121.90.80/304NET-CCF--0-144-121-90-80-30unknown———
└ 144.121.90.88/298NET-CCF---144-121-90-88-29unknown———
└ 144.121.90.96/298NET-144-121-90-96-29unknown———
└ 144.121.90.104/298NET-CCF---144-121-90-104-29unknown———
└ 144.121.90.112/298NET-CCF--0-144-121-90-112-29unknown———
└ 144.121.90.120/298NET-CCF--0-144-121-90-120-29unknown———
└ 144.121.90.128/298NET-CCF---144-121-90-128-29unknown———
└ 144.121.90.136/298NET-CCF---144-121-90-136-29unknown———
└ 144.121.90.168/298LTF--144-121-90-168-29unknown———
└ 144.121.90.180/304NET-CCF---144-121-90-180-30unknown———
└ 144.121.90.184/298NET-CCF---144-121-90-184-29unknown———
└ 144.121.90.192/304NET-CCF---144-121-90-192-30unknown———
└ 144.121.90.200/298NET-Z-CCF--144-121-90-200-29unknown———
└ 144.121.90.224/2816LTF-144-121-90-224-28unknown———
└ 144.121.90.248/298NET-144-121-90-248-29unknown———
└ 144.121.91.0/2664NET-LT-645-144-121-91-0-26unknown———
└ 144.121.91.64/298NET-144-121-91-64-29unknown———
└ 144.121.91.72/298NET-CCF--0-144-121-91-72-29unknown———
└ 144.121.91.96/2732NET-LT-061-144-121-91-96-27unknown———
└ 144.121.91.132/304NET-CCF---144-121-91-132-30unknown———
└ 144.121.91.144/298NET-CCF--0-144-121-91-144-29unknown———
└ 144.121.91.152/298NET-CCF---144-121-91-152-29unknown———
← Previous1–200 of 269 · page 1 of 2Next →

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

4,096 addresses
TypeAddressesShareRanges
Internet provider3,32881%3
Business51213%2
Unknown2566.3%1

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