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Data as of Nov 7, 2026

172.85.50.0/23

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
172.85.32.0/19
since May 2015
AS46887Internet provider4Zayo 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
172.85.32.0/198,192ZAYO-CCF-172-85-32-0Zayo Bandwidth (ZAYOB) · USDirect AllocationMay 18, 2015abuse@zayo.com
└ 172.85.50.16/2816NET-172-85-50-16-28unknown———
└ 172.85.50.64/2664NET-172-85-50-64-26unknown———
└ 172.85.50.144/298NET-172-85-50-144-29unknown———
└ 172.85.50.160/2816NET-172-85-50-160-28unknown———
└ 172.85.50.208/2816NET-CCF--0-172-85-50-208-28unknown———
└ 172.85.50.224/298NET-172-85-50-224-29unknown———
└ 172.85.51.0/2664NET-172-85-51-0-26unknown———
└ 172.85.51.64/298LTF--172-85-51-64-29unknown———
└ 172.85.51.80/298LTF-0-172-85-51-80-29unknown———
└ 172.85.51.192/2732NET-172-85-51-192-27unknown———
└ 172.85.51.224/2816NET-172-85-51-224-28unknown———

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