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Data as of Nov 8, 2026

144.121.96.0/22

No anonymizer space · no proxy exits in 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

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
└ 144.121.96.32/298NET-0-144-121-96-32-29unknown———
└ 144.121.96.40/304NET-CCF--144-121-96-40-30unknown———
└ 144.121.96.48/298LTF-144-121-96-48-29unknown———
└ 144.121.96.56/298NET-144-121-96-56-29unknown———
└ 144.121.96.88/298NET-CCF-0-144-121-96-88-29unknown———
└ 144.121.96.96/2732NET-144-121-96-96-27unknown———
└ 144.121.96.128/298NET-LT-539-144-121-96-128-29unknown———
└ 144.121.96.136/298NET-CCF--144-121-96-136-29unknown———
└ 144.121.96.152/298LTF--144-121-96-152-29unknown———
└ 144.121.96.160/298LTF-0-144-121-96-160-29unknown———
└ 144.121.96.176/2816NET-144-121-96-176-28unknown———
└ 144.121.96.208/298NET-CCF--144-121-96-208-29unknown———
└ 144.121.96.216/304NET-CCF--144-121-96-216-30unknown———
└ 144.121.96.224/2732NET-144-121-96-224-27unknown———
└ 144.121.97.0/298LTF--144-121-97-0-29unknown———
└ 144.121.97.16/304NET-CCF---144-121-97-16-30unknown———
└ 144.121.97.32/298NET-CCF---144-121-97-32-29unknown———
└ 144.121.97.40/298NET-CCF-144-121-97-40-29unknown———
└ 144.121.97.48/2816NET-CCF--144-121-97-48-28unknown———
└ 144.121.97.68/304NET-CCF-0-144-121-97-68-30unknown———
└ 144.121.97.88/298NET-CCF-0-144-121-97-88-29unknown———
└ 144.121.97.96/2732NET-Z-CCF--144-121-97-96-27unknown———
└ 144.121.97.128/298LTF--144-121-97-128-29unknown———
└ 144.121.97.136/304NET-CCF---144-121-97-136-30unknown———
└ 144.121.97.144/2816NET-CCF--144-121-97-144-28unknown———
└ 144.121.97.168/298LTF--144-121-97-168-29unknown———
└ 144.121.97.176/2816LTF--144-121-97-176-28unknown———
└ 144.121.97.192/2732LTF-0-144-121-97-192-27unknown———
└ 144.121.97.224/2816NET-Z-CCF-0-144-121-97-224-28unknown———
└ 144.121.97.240/298NET-144-121-97-240-29unknown———
└ 144.121.97.248/298NET-144-121-97-248-29unknown———
└ 144.121.98.20/304NET-CCF-LT-486-144-121-98-20-30unknown———
└ 144.121.98.24/298LTF--144-121-98-24-29unknown———
└ 144.121.98.64/298NET-144-121-98-64-29unknown———
└ 144.121.98.72/298NET-CCF--144-121-98-72-29unknown———
└ 144.121.98.80/298NET-CCF--144-121-98-80-29unknown———
└ 144.121.98.88/298LTF--144-121-98-88-29unknown———
└ 144.121.98.100/304NET-CCF-LT-486-144-121-98-100-30unknown———
└ 144.121.98.104/298NET-144-121-98-104-29unknown———
└ 144.121.98.120/298NET-CCF-0-144-121-98-120-29unknown———
└ 144.121.98.128/2816NET-CCF--144-121-98-128-28unknown———
└ 144.121.98.176/298LTF-144-121-98-176-29unknown———
└ 144.121.98.184/298NET-Z-CCF-0-144-121-98-184-29unknown———
└ 144.121.98.192/298LTF--144-121-98-192-29unknown———
└ 144.121.98.200/298NET-144-121-98-200-29unknown———
└ 144.121.98.208/304NET-CCF-0-144-121-98-208-30unknown———
└ 144.121.98.224/298NET-CCF-LT-486-144-121-98-224-29unknown———
└ 144.121.98.240/298NET-CCF-0-144-121-98-240-29unknown———
└ 144.121.98.248/298NET-CCF-0-144-121-98-248-29unknown———
└ 144.121.99.0/24256NET-144-121-99-0-24unknown———

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