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Data as of Nov 8, 2026

144.121.16.0/22

1 residential-proxy exit · 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
1
0.10% of its addresses · 30 days
Spread
1 of 4
/24s with at least one exit
Providers
1
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

35 observations

Proxy providers listing exits

  • ThunderProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/18
since Aug 2016
AS46887Internet provider16
3 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
└ 144.121.16.0/2816NET-144-121-16-0-28unknown———
└ 144.121.16.16/298NET-CCF--144-121-16-16-29unknown———
└ 144.121.16.28/304NET-CCF--144-121-16-28-30unknown———
└ 144.121.16.32/2732NET-CCF--144-121-16-32-27unknown———
└ 144.121.16.64/298NET-CCF--144-121-16-64-29unknown———
└ 144.121.16.72/298NET-CCF--144-121-16-72-29unknown———
└ 144.121.16.96/298NET-CCF--144-121-16-96-29unknown———
└ 144.121.16.104/298LTF--144-121-16-104-29unknown———
└ 144.121.16.112/298NET-CCF--144-121-16-112-29unknown———
└ 144.121.16.120/298NET-CCF--144-121-16-120-29unknown———
└ 144.121.16.128/2816NET-SD-50920-144-121-16-128-28unknown———
└ 144.121.16.144/298LTF--144-121-16-144-29unknown———
└ 144.121.16.152/304NET-CCF--144-121-16-152-30unknown———
└ 144.121.16.168/304NET-CCF-0-144-121-16-168-30unknown———
└ 144.121.16.172/304NET-CCF--144-121-16-172-30unknown———
└ 144.121.16.176/298NET-CCF--144-121-16-176-29unknown———
└ 144.121.16.184/298NET-CCF-0-144-121-16-184-29unknown———
└ 144.121.16.200/298NET-144-121-16-200-29unknown———
└ 144.121.16.208/304NET-144-121-16-208-30unknown———
└ 144.121.16.212/304NET-CCF--144-121-16-212-30unknown———
└ 144.121.16.216/298NET-CCF--144-121-16-216-29unknown———
└ 144.121.16.224/2732NET-144-121-16-224-27unknown———
└ 144.121.18.0/298NET-144-121-18-0-29unknown———
└ 144.121.18.16/298NET-CCF--144-121-18-16-29unknown———
└ 144.121.18.24/304NET-CCF-0-144-121-18-24-30unknown———
└ 144.121.18.32/2816NET-144-121-18-32-28unknown———
└ 144.121.18.48/298NET-144-121-18-48-29unknown———
└ 144.121.18.56/298NET-CCF--144-121-18-56-29unknown———
└ 144.121.18.72/298NET-CCF--144-121-18-72-29unknown———
└ 144.121.18.80/2816LTF--144-121-18-80-28unknown———
└ 144.121.18.96/298NET-CCF--144-121-18-96-29unknown———
└ 144.121.18.112/2816NET-CCF--144-121-18-112-28unknown———
└ 144.121.18.128/2816NET-CCF---144-121-18-128-28unknown———
└ 144.121.18.144/298NET-CCF--144-121-18-144-29unknown———
└ 144.121.18.152/304NET-Z-CCF--144-121-18-152-30unknown———
└ 144.121.18.160/2732NET-CCF--144-121-18-160-27unknown———
└ 144.121.18.192/298LTF--144-121-18-192-29unknown———
└ 144.121.18.208/298NET-CCF-0-144-121-18-208-29unknown———
└ 144.121.18.216/298NET-CCF--144-121-18-216-29unknown———
└ 144.121.19.0/298NET-144-121-19-0-29unknown———
└ 144.121.19.16/2816LTF--144-121-19-16-28unknown———
└ 144.121.19.32/298LTF--144-121-19-32-29unknown———
└ 144.121.19.40/298NET-CCF---144-121-19-40-29unknown———
└ 144.121.19.48/298NET-CCF--144-121-19-48-29unknown———
└ 144.121.19.56/298NET-144-121-19-56-29unknown———
└ 144.121.19.96/298NET-Z-CCF-CUSTOMERS-BANK-144-121-19-96-29unknown———
└ 144.121.19.104/298NET-Z-CCF--144-121-19-104-29unknown———
└ 144.121.19.112/298NET-CCF--144-121-19-112-29unknown———
└ 144.121.19.128/2816LTF--144-121-19-128-28unknown———
└ 144.121.19.160/2732NET-CCF-0-144-121-19-160-27unknown———
└ 144.121.19.192/2732NET-144-121-19-192-27unknown———

Network & registry

AnnouncementRouting historyWhois & 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