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Data as of Nov 9, 2026

144.121.248.0/22

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
Always-on exits
1
50% of its exits
Spread
2 of 4
/24s with at least one exit
Providers
22
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

5.0K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.251.0/2411
144.121.249.0/2401

Proxy providers listing exits

  • AnyIP
  • BirdProxies
  • BottingTools
  • ByteProxies
  • Byteful
  • DataImpulse
  • EnigmaProxy
  • FlashProxy
  • Geonode
  • GloryCloud
  • MrScraper
  • NovaProxy
  • Novada
  • Oxylabs
  • PacketStream
  • Proxiware
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Proxyma
  • Thordata
  • ThunderProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.192.0/18
since Dec 2017
AS46887Internet provider41
8 always on
Zayo Bandwidth
144.121.0.0/16
since Nov 2021
AS46887Internet provider129
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
└ 144.121.248.0/304NET-CCF--144-121-248-0-30unknown———
└ 144.121.248.8/298NET-Z-CCF-LT-614-144-121-248-8-29unknown———
└ 144.121.248.16/298NET-CCF--0-144-121-248-16-29unknown———
└ 144.121.248.32/2816LTF--144-121-248-32-28unknown———
└ 144.121.248.64/298NET-CCF-0-144-121-248-64-29unknown———
└ 144.121.248.72/304NET-CCF-0-144-121-248-72-30unknown———
└ 144.121.248.96/2816LTF--144-121-248-96-28unknown———
└ 144.121.248.112/2816LTF-144-121-248-112-28unknown———
└ 144.121.248.132/304NET-CCF---144-121-248-132-30unknown———
└ 144.121.248.136/298NET-Z-CCF-0-144-121-248-136-29unknown———
└ 144.121.248.176/298NET-CCF--144-121-248-176-29unknown———
└ 144.121.248.192/2732NET-Z-CCF--144-121-248-192-27unknown———
└ 144.121.248.224/298NET-CCF--144-121-248-224-29unknown———
└ 144.121.248.232/298LTF--144-121-248-232-29unknown———
└ 144.121.248.240/298LTF--144-121-248-240-29unknown———
└ 144.121.249.0/298NET-CCF-0-144-121-249-0-29unknown———
└ 144.121.249.8/298LTF--144-121-249-8-29unknown———
└ 144.121.249.40/298NET-CCF--144-121-249-40-29unknown———
└ 144.121.249.52/304NET-CCF-0-144-121-249-52-30unknown———
└ 144.121.249.64/298NET-CCF---144-121-249-64-29unknown———
└ 144.121.249.72/304NET-CCF---144-121-249-72-30unknown———
└ 144.121.249.80/298LTF--144-121-249-80-29unknown———
└ 144.121.249.96/298NET-CCF--0-144-121-249-96-29unknown———
└ 144.121.249.104/298NET-CCF---144-121-249-104-29unknown———
└ 144.121.249.112/298LTF-0-144-121-249-112-29unknown———
└ 144.121.249.128/25128LTF--144-121-249-128-25unknown———
└ 144.121.250.44/304NET-CCF--144-121-250-44-30unknown———
└ 144.121.250.84/304NET-CCF--144-121-250-84-30unknown———
└ 144.121.250.88/304NET-CCF--144-121-250-88-30unknown———
└ 144.121.250.92/304NET-CCF--144-121-250-92-30unknown———
└ 144.121.250.96/2816LTF--144-121-250-96-28unknown———
└ 144.121.250.112/298NET-CCF---144-121-250-112-29unknown———
└ 144.121.250.120/298NET-CCF---144-121-250-120-29unknown———
└ 144.121.250.128/2816NET-CCF---144-121-250-128-28unknown———
└ 144.121.250.148/304NET-Z-CCF-0-144-121-250-148-30unknown———
└ 144.121.250.152/298LTF-0-144-121-250-152-29unknown———
└ 144.121.250.160/2816NET-CCF-0-144-121-250-160-28unknown———
└ 144.121.250.184/298LTF--144-121-250-184-29unknown———
└ 144.121.250.192/2816LTF--144-121-250-192-28unknown———
└ 144.121.250.208/298NET-Z-CCF--144-121-250-208-29unknown———
└ 144.121.250.216/298NET-Z-CCF--144-121-250-216-29unknown———
└ 144.121.250.224/298NET-Z-CCF--144-121-250-224-29unknown———
└ 144.121.250.232/298NET-CCF---144-121-250-232-29unknown———
└ 144.121.250.240/2816LTF--144-121-250-240-28unknown———
└ 144.121.251.0/298LTF--144-121-251-0-29unknown———
└ 144.121.251.8/304NET-CCF---144-121-251-8-30unknown———
└ 144.121.251.16/298NET-Z-CCF--144-121-251-16-29unknown———
└ 144.121.251.24/298LTF--144-121-251-24-29unknown———
└ 144.121.251.32/304NET-Z-CCF-0-144-121-251-32-30unknown———
└ 144.121.251.36/304NET-CCF--144-121-251-36-30unknown———
└ 144.121.251.40/298LTF--144-121-251-40-29unknown———
└ 144.121.251.48/298NET-CCF---144-121-251-48-29unknown———
└ 144.121.251.60/304NET-CCF--144-121-251-60-30unknown———
└ 144.121.251.96/298LTF--144-121-251-96-29unknown———
└ 144.121.251.104/298LTF--144-121-251-104-29unknown———
└ 144.121.251.112/298NET-CCF--0-144-121-251-112-29unknown———
└ 144.121.251.120/298LTF--144-121-251-120-29unknown———
└ 144.121.251.128/2816NET-CCF-0-144-121-251-128-28unknown———
└ 144.121.251.144/298NET-CCF---144-121-251-144-29unknown———
└ 144.121.251.152/298NET-CCF-0-144-121-251-152-29unknown———
└ 144.121.251.160/304NET-CCF--144-121-251-160-30unknown———
└ 144.121.251.164/304NET-CCF--144-121-251-164-30unknown———
└ 144.121.251.168/298NET-CCF--144-121-251-168-29unknown———
└ 144.121.251.176/298NET-CCF--144-121-251-176-29unknown———
└ 144.121.251.184/298NET-CCF--0-144-121-251-184-29unknown———
└ 144.121.251.192/298NET-CCF---144-121-251-192-29unknown———
└ 144.121.251.200/298NET-CCF--0-144-121-251-200-29unknown———
└ 144.121.251.208/304NET-Z-CCF--144-121-251-208-30unknown———
└ 144.121.251.216/298LTF--144-121-251-216-29unknown———
└ 144.121.251.224/298NET-Z-CCF-SD-50946-144-121-251-224-29unknown———
└ 144.121.251.232/298NET-Z-CCF-0-144-121-251-232-29unknown———

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