LAYER3 INTEL
Get started
Sign in
Data as of Nov 8, 2026

144.121.0.0/18

16 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
91% of it

Residential-proxy exits

Proxy exits
16
0.10% of its addresses · 30 days
Always-on exits
3
19% of its exits
Spread
16 of 64
/24s with at least one exit
Providers
46
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

7.3K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.2.0/2411
144.121.3.0/2411
144.121.60.0/2411
144.121.48.0/2401
144.121.16.0/2401
144.121.21.0/2401
144.121.24.0/2401
144.121.26.0/2401
144.121.10.0/2401
144.121.51.0/2401
144.121.52.0/2401
144.121.54.0/2401
144.121.57.0/2401
144.121.59.0/2401
144.121.8.0/2401
144.121.62.0/2401

Proxy providers listing exits

  • 711Proxy
  • ASHBURNPROXIES
  • Ake.net
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • CliProxy
  • ColaProxy
  • DataImpulse
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • Geonode
  • GloryCloud
  • IPFly
  • IPPeak
  • LudaxProxy
  • Maskify
  • MrScraper
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • Proxiware
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Proxyma
  • PuraRoute
  • RainProxy
  • RoamProxy
  • Thordata
  • ThunderProxy
  • WealthProxies
  • YumiProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/16
since Nov 2021
AS46887Internet provider132
25 always on
Zayo Bandwidth
Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

Arrived
PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/22
since Dec 2024
AS46887Internet provider2
2 always on
Zayo Bandwidth
144.121.4.0/22
since Jun 2025
AS46887Internet providerZayo Bandwidth
144.121.8.0/22
since Apr 2025
AS46887Internet provider2Zayo Bandwidth
144.121.12.0/22
since Jun 2025
AS46887Internet providerZayo Bandwidth
144.121.16.0/22
since Dec 2025
AS46887Internet provider1Zayo Bandwidth
144.121.20.0/22
since Dec 2025
AS46887Internet provider1Zayo Bandwidth
144.121.24.0/22
since Dec 2025
AS46887Internet provider2Zayo Bandwidth
144.121.27.0/24
since Mar 2018
AS15027BusinessZayo Bandwidth
144.121.28.0/22
since Jul 2025
AS46887Internet providerZayo Bandwidth
144.121.30.0/24
since Mar 2018
AS62653BusinessZayo Bandwidth
144.121.32.0/21
since Nov 2021
AS46887Internet providerZayo Bandwidth
144.121.40.0/24
since Nov 2021
AS46887Internet providerZayo Bandwidth
144.121.41.0/24
since Nov 2021
AS46887UnknownZayo Bandwidth
144.121.43.0/24
since May 2018
AS64293BusinessZayo Bandwidth
144.121.44.0/22
since Nov 2021
AS46887Internet providerZayo Bandwidth
144.121.48.0/20
since Nov 2021
AS46887Internet provider8
1 always on
Zayo Bandwidth
144.121.49.0/24
since Aug 2018
AS46887BusinessZayo Bandwidth
144.121.61.0/24
since Jan 2020
AS27015BusinessZayo 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
└ 144.121.0.0/304NET-CCF--SD-49524-144-121-0-0-30unknown———
└ 144.121.0.8/304NET-CCF-0-144-121-0-8-30unknown———
└ 144.121.0.12/304NET-CCF--0-144-121-0-12-30unknown———
└ 144.121.0.16/304NET-CCF--0-144-121-0-16-30unknown———
└ 144.121.0.20/304NET-CCF-0-144-121-0-20-30unknown———
└ 144.121.0.24/304NET-CCF--144-121-0-24-30unknown———
└ 144.121.0.32/298NET-144-121-0-32-29unknown———
└ 144.121.0.40/298LTF--144-121-0-40-29unknown———
└ 144.121.0.48/304NET-CCF---144-121-0-48-30unknown———
└ 144.121.0.56/298LTF--144-121-0-56-29unknown———
└ 144.121.0.64/2732NET-144-121-0-64-27unknown———
└ 144.121.0.96/298NET-CCF---144-121-0-96-29unknown———
└ 144.121.0.104/298NET-CCF--0-144-121-0-104-29unknown———
└ 144.121.0.112/304NET-CCF---144-121-0-112-30unknown———
└ 144.121.0.116/304NET-CCF---144-121-0-116-30unknown———
└ 144.121.0.120/298NET-CCF---144-121-0-120-29unknown———
└ 144.121.0.128/304NET-CCF---144-121-0-128-30unknown———
└ 144.121.0.144/298NET-CCF-0-144-121-0-144-29unknown———
└ 144.121.0.160/298NET-CCF--0-144-121-0-160-29unknown———
└ 144.121.0.168/298NET-CCF--0-144-121-0-168-29unknown———
└ 144.121.0.176/298NET-144-121-0-176-29unknown———
└ 144.121.0.192/298NET-CCF---144-121-0-192-29unknown———
└ 144.121.0.200/298NET-CCF---144-121-0-200-29unknown———
└ 144.121.0.208/298NET-CCF---144-121-0-208-29unknown———
└ 144.121.0.216/298NET-CCF---144-121-0-216-29unknown———
└ 144.121.0.232/298NET-144-121-0-232-29unknown———
└ 144.121.0.240/304NET-CCF---144-121-0-240-30unknown———
└ 144.121.0.248/298LTF--144-121-0-248-29unknown———
└ 144.121.2.0/2732NET-CCF-0-144-121-2-0-27unknown———
└ 144.121.2.32/2816LTF-LT-614-144-121-2-32-28unknown———
└ 144.121.2.52/304NET-CCF--0-144-121-2-52-30unknown———
└ 144.121.2.56/304NET-CCF--0-144-121-2-56-30unknown———
└ 144.121.2.60/304NET-CCF--SD-50844-144-121-2-60-30unknown———
└ 144.121.2.64/2816NET-CCF---144-121-2-64-28unknown———
└ 144.121.2.80/298NET-CCF--144-121-2-80-29unknown———
└ 144.121.2.96/298NET-CCF---144-121-2-96-29unknown———
└ 144.121.2.104/298NET-CCF--LT-614-144-121-2-104-29unknown———
└ 144.121.2.112/2816NET-CCF--0-144-121-2-112-28unknown———
└ 144.121.2.128/2816NET-144-121-2-128-28unknown———
└ 144.121.2.144/2816NET-CCF---144-121-2-144-28unknown———
└ 144.121.2.160/304NET-CCF---144-121-2-160-30unknown———
└ 144.121.2.168/298NET-CCF-0-144-121-2-168-29unknown———
└ 144.121.2.176/298NET-CCF--0-144-121-2-176-29unknown———
└ 144.121.2.184/304NET-CCF---144-121-2-184-30unknown———
└ 144.121.2.192/2816NET-144-121-2-192-28unknown———
└ 144.121.2.208/298NET-CCF---144-121-2-208-29unknown———
└ 144.121.2.216/304NET-CCF---144-121-2-216-30unknown———
└ 144.121.2.220/304NET-Z-CCF-0-144-121-2-220-30unknown———
└ 144.121.2.224/2816NET-CCF---144-121-2-224-28unknown———
└ 144.121.2.240/298NET-CCF---144-121-2-240-29unknown———
└ 144.121.2.248/298NET-144-121-2-248-29unknown———
└ 144.121.3.0/298NET-144-121-3-0-29unknown———
└ 144.121.3.16/298NET-144-121-3-16-29unknown———
└ 144.121.3.24/304NET-CCF---144-121-3-24-30unknown———
└ 144.121.3.32/2732NET-CCF---144-121-3-32-27unknown———
└ 144.121.3.64/298NET-SD-50020-144-121-3-64-29unknown———
└ 144.121.3.80/2816NET-144-121-3-80-28unknown———
└ 144.121.3.96/2732NET-Z-CCF--144-121-3-96-27unknown———
└ 144.121.3.128/298NET-CCF---144-121-3-128-29unknown———
└ 144.121.3.144/304NET-CCF---144-121-3-144-30unknown———
└ 144.121.3.152/298LTF-0-144-121-3-152-29unknown———
└ 144.121.3.160/298NET-CCF--0-144-121-3-160-29unknown———
└ 144.121.3.168/298NET-CCF-144-121-3-168-29unknown———
└ 144.121.3.176/2816NET-CCF---144-121-3-176-28unknown———
└ 144.121.3.192/298NET-144-121-3-192-29unknown———
└ 144.121.3.200/304NET-CCF--SD-50292-144-121-3-200-30unknown———
└ 144.121.3.204/304NET-CCF---144-121-3-204-30unknown———
└ 144.121.3.208/2816NET-CCF---144-121-3-208-28unknown———
└ 144.121.3.224/298NET-CCF--0-144-121-3-224-29unknown———
└ 144.121.3.232/298NET-144-121-3-232-29unknown———
└ 144.121.3.248/298NET-144-121-3-248-29unknown———
└ 144.121.4.0/24256NET-144-121-4-0-24unknown———
└ 144.121.5.0/304NET-CCF--LT-524-144-121-5-0-30unknown———
└ 144.121.5.4/304NET-CCF---144-121-5-4-30unknown———
└ 144.121.5.8/304NET-Z-CCF--144-121-5-8-30unknown———
└ 144.121.5.16/2816NET-CCF--0-144-121-5-16-28unknown———
└ 144.121.5.32/298LTF-0-144-121-5-32-29unknown———
└ 144.121.5.48/298NET-144-121-5-48-29unknown———
└ 144.121.5.56/298NET-144-121-5-56-29unknown———
└ 144.121.5.64/298NET-144-121-5-64-29unknown———
└ 144.121.5.72/298NET-144-121-5-72-29unknown———
└ 144.121.5.80/298NET-CCF--0-144-121-5-80-29unknown———
└ 144.121.5.88/298NET-144-121-5-88-29unknown———
└ 144.121.5.96/2732NET-144-121-5-96-27unknown———
└ 144.121.5.128/298NET-144-121-5-128-29unknown———
└ 144.121.5.136/304NET-CCF--144-121-5-136-30unknown———
└ 144.121.5.140/304NET-CCF---144-121-5-140-30unknown———
└ 144.121.5.144/298NET-CCF--0-144-121-5-144-29unknown———
└ 144.121.5.152/298NET-144-121-5-152-29unknown———
└ 144.121.5.160/2732NET-144-121-5-160-27unknown———
└ 144.121.5.196/304NET-CCF---144-121-5-196-30unknown———
└ 144.121.5.200/298NET-144-121-5-200-29unknown———
└ 144.121.5.208/298LTF--144-121-5-208-29unknown———
└ 144.121.5.224/304NET-CCF--0-144-121-5-224-30unknown———
└ 144.121.5.232/304NET-Z-CCF-0-144-121-5-232-30unknown———
└ 144.121.5.240/298LTF--144-121-5-240-29unknown———
└ 144.121.5.248/298NET-CCF---144-121-5-248-29unknown———
└ 144.121.6.8/298LTF-0-144-121-6-8-29unknown———
└ 144.121.6.16/304NET-CCF-0-144-121-6-16-30unknown———
└ 144.121.6.20/304NET-CCF--144-121-6-20-30unknown———
└ 144.121.6.24/298NET-144-121-6-24-29unknown———
└ 144.121.6.40/298NET-CCF---144-121-6-40-29unknown———
└ 144.121.6.64/298NET-CCF---144-121-6-64-29unknown———
└ 144.121.6.72/298NET-CCF---144-121-6-72-29unknown———
└ 144.121.6.96/2732NET-144-121-6-96-27unknown———
└ 144.121.6.128/2664NET-CCF--LT-524-144-121-6-128-26unknown———
└ 144.121.6.192/2816LTF--144-121-6-192-28unknown———
└ 144.121.6.232/298LTF-LT-614-144-121-6-232-29unknown———
└ 144.121.6.240/298LTF--144-121-6-240-29unknown———
└ 144.121.6.248/298NET-Z-CCF-0-144-121-6-248-29unknown———
└ 144.121.7.0/2816NET-Z-CCF-0-144-121-7-0-28unknown———
└ 144.121.7.16/298NET-CCF-0-144-121-7-16-29unknown———
└ 144.121.7.24/298NET-CCF-SD-50960-144-121-7-24-29unknown———
└ 144.121.7.32/304NET-Z-CCF--144-121-7-32-30unknown———
└ 144.121.7.48/298NET-144-121-7-48-29unknown———
└ 144.121.7.56/298NET-CCF---144-121-7-56-29unknown———
└ 144.121.7.64/298NET-144-121-7-64-29unknown———
└ 144.121.7.76/304NET-CCF-0-144-121-7-76-30unknown———
└ 144.121.7.80/298NET-144-121-7-80-29unknown———
└ 144.121.7.104/298NET-CCF--0-144-121-7-104-29unknown———
└ 144.121.7.112/298NET-144-121-7-112-29unknown———
└ 144.121.7.120/298NET-CCF-0-144-121-7-120-29unknown———
└ 144.121.7.128/2664NET-144-121-7-128-26unknown———
└ 144.121.7.192/304NET-CCF--0-144-121-7-192-30unknown———
└ 144.121.7.196/304NET-CCF--0-144-121-7-196-30unknown———
└ 144.121.7.200/298NET-CCF---144-121-7-200-29unknown———
└ 144.121.7.208/298NET-144-121-7-208-29unknown———
└ 144.121.7.216/298NET-144-121-7-216-29unknown———
└ 144.121.7.228/304NET-0-144-121-7-228-30unknown———
└ 144.121.7.232/304NET-CCF--0-144-121-7-232-30unknown———
└ 144.121.7.236/304NET-CCF--144-121-7-236-30unknown———
└ 144.121.7.240/298LTF--144-121-7-240-29unknown———
└ 144.121.7.252/304NET-CCF--144-121-7-252-30unknown———
└ 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———
← Previous1–200 of 864 · page 1 of 5Next →

Composition

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

Announced space

Address share

Announced space

Types across the prefix

16,384 addresses
TypeAddressesShareRanges
Internet provider14,84891%16
Business1,2807.8%5
Unknown2561.6%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