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Data as of Nov 8, 2026

144.121.0.0/19

8 residential-proxy exits · 30 days

Crown Castle Fiber LLC · space held by Zayo Bandwidth

Announcement
144.121.0.0/18
No RPKI
Announced by
AS46887
Type
Internet provider
94% of it

Residential-proxy exits

Proxy exits
8
0.10% of its addresses · 30 days
Always-on exits
2
25% of its exits
Spread
8 of 32
/24s with at least one exit
Providers
32
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

4.3K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.2.0/2411
144.121.3.0/2411
144.121.8.0/2401
144.121.10.0/2401
144.121.16.0/2401
144.121.21.0/2401
144.121.24.0/2401
144.121.26.0/2401

Proxy providers listing exits

  • 711Proxy
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • CliProxy
  • ColaProxy
  • DataImpulse
  • Decodo
  • EZProxies
  • FlashProxy
  • FloppyData
  • Geonode
  • GloryCloud
  • IPFly
  • IPPeak
  • LudaxProxy
  • Maskify
  • NovProxy
  • Oxylabs
  • Proxy-Seller
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • PuraRoute
  • RainProxy
  • RoamProxy
  • Thordata
  • ThunderProxy

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

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

Composition

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

Announced space

Address share

Announced space

Types across the prefix

8,192 addresses
TypeAddressesShareRanges
Internet provider7,68094%9
Business5126.3%2

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 144.121.0.0/18

Prefix
144.121.0.0/18
Announced by
AS46887 Crown Castle Fiber LLC
Type
Internet provider
Proxy exits
16
Always-on exits
3
RPKI
No RPKI
Netname
ZAYO-CCF-144-121-0-0
Registrant
Zayo Bandwidth
RIR
ARIN
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