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Data as of Nov 8, 2026

173.225.56.0/22

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
54% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
173.225.48.0/20
since Oct 2025
AS46887Internet provider7Zayo Bandwidth
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
173.225.56.0/24
since May 2019
AS46887Internet providerZayo Bandwidth
173.225.58.0/24
since May 2019
AS46887Internet providerZayo 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
173.225.48.0/204,096ZAYO-CCF-173-225-48-0Zayo Bandwidth (ZAYOB) · USDirect AllocationJan 26, 2010abuse@zayo.com
└ 173.225.56.0/304BESTPASS-INCunknown———
└ 173.225.56.4/304NYS-SENATEunknown———
└ 173.225.56.8/304RAILEXunknown———
└ 173.225.56.12/304CD-PERRYunknown———
└ 173.225.56.16/304NEW-YORK-STATE-TEACHERS-RETIREMENT-SYSTEMunknown———
└ 173.225.56.20/304NEW-YORK-STATE-TEACHERS-RETIREMENT-SYSTEMunknown———
└ 173.225.56.24/298MADISON-WEALTH-MANAGERS-LLCunknown———
└ 173.225.56.32/2732CITY-OF-SARATOGA-SPRINGSunknown———
└ 173.225.56.72/298BESTPASS-INCunknown———
└ 173.225.56.80/298ME-ENGINEERINGunknown———
└ 173.225.56.88/304172-RIVER-ST-ASSOC-LLCunknown———
└ 173.225.56.92/304MADISON-WEALTH-MANAGERS-LLCunknown———
└ 173.225.56.96/2816ME-ENGINEERINGunknown———
└ 173.225.56.112/298UNIFIED-COURT-SYSTEM-NYunknown———
└ 173.225.56.120/298FIBERTECH-NETWORKSunknown———
└ 173.225.56.128/2664KINNEY-AND-ASSOCIATESunknown———
└ 173.225.56.192/298ME-ENGINEERINGunknown———
└ 173.225.56.200/298CENTER-FOR-INTERNET-SECURITYunknown———
└ 173.225.56.208/2816NORTHEAST-ORTHOPEADICSunknown———
└ 173.225.56.224/2816BESTPASS-INCunknown———
└ 173.225.57.0/24256ROCHESTER-CITY-SCHOOLSunknown———
└ 173.225.58.0/298DIGITAL-BACK-OFFICEunknown———
└ 173.225.58.8/298DIGITAL-BACK-OFFICEunknown———
└ 173.225.58.16/304REPRODUCTIVE-MEDICINE-ASSOCIATESunknown———
└ 173.225.58.24/298HUBBELL-INCunknown———
└ 173.225.58.32/2732QUICKCOMMunknown———
└ 173.225.58.64/2732CITY-OF-DANBURYunknown———
└ 173.225.58.96/298THE-CHAPIN-AND-BANG-COMPANYunknown———
└ 173.225.58.104/298NOBLES-AMERICA-CORPunknown———
└ 173.225.58.112/298FIBERTECH-NETWORKSunknown———
└ 173.225.58.120/298LIFECAREunknown———
└ 173.225.58.128/304AVON-PRODUCTSunknown———
└ 173.225.58.136/298MORAN-TOWING-CORPunknown———
└ 173.225.58.144/2816ATLANTIC-ASSET-MANAGEMENTunknown———
└ 173.225.58.160/2816LIFECAREunknown———
└ 173.225.58.176/298SSARIS-ADVISORS-LLCunknown———
└ 173.225.58.184/304CHIMENETunknown———
└ 173.225.58.192/2732GERA-DANBURY-THE-MATRIX-CORP-CENTERunknown———
└ 173.225.58.224/2816MORAN-TOWING-GROUPunknown———
└ 173.225.58.240/2816MORAN-TOWING-GROUPunknown———
└ 173.225.59.0/24256TRIAD-HEALTHCAREunknown———

Composition

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

Announced space

Address share

Announced space

Types across the prefix

1,024 addresses
TypeAddressesShareRanges
Internet provider54854%7
Business47646%39

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