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Data as of Nov 6, 2026

74.113.48.0/21

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
Business
43% of it

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
74.113.48.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
74.113.48.0/24
since Jan 2019
AS46887UnknownZayo Bandwidth
74.113.49.0/24
since Oct 2025
AS46887Internet providerZayo Bandwidth
74.113.50.0/23
since Sep 2021
AS46887Internet providerZayo Bandwidth
74.113.50.0/24
since Feb 2021
AS46887UnknownZayo Bandwidth
74.113.51.0/24
since May 2019
AS46887Internet providerZayo Bandwidth
74.113.52.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
74.113.52.0/24
since May 2019
AS46887Internet providerZayo Bandwidth
74.113.53.0/24
since May 2019
AS46887Internet providerZayo Bandwidth
74.113.54.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
74.113.55.0/24
since Nov 2025
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
74.113.48.0/212,048ZAYO-CCF-74-113-48-0Zayo Bandwidth (ZAYOB) · USDirect AllocationMar 22, 2011abuse@zayo.com
└ 74.113.48.0/24256FIBERTECH-NETWORKSFibertech Networks (C04612772) · USReassignedJun 18, 2013abuse@zayo.com
via ZAYO-CCF-74-113-48-0
└ 74.113.49.0/2732WHITEBOARD-IT-SERVICESunknown———
└ 74.113.49.32/304WENDEL-COMPANIESunknown———
└ 74.113.49.36/304M-AND-T-BANKunknown———
└ 74.113.49.40/298CATHOLIC-HEALTH-CELERITYunknown———
└ 74.113.49.48/2816CATHOLIC-HEALTHunknown———
└ 74.113.49.64/2732WENDEL-COMPANIESunknown———
└ 74.113.49.96/2816CATHOLIC-HEALTHunknown———
└ 74.113.49.112/304THE-HAMISTER-GROUP--INCunknown———
└ 74.113.49.116/304THE-HAMISTER-GROUP--INCunknown———
└ 74.113.49.120/304M-AND-T-BANKunknown———
└ 74.113.49.124/304CATHOLIC-HEALTH-CELERITYunknown———
└ 74.113.49.128/2732THE-HAMISTER-GROUP--INCunknown———
└ 74.113.49.160/2732THE-HAMISTER-GROUP--INCunknown———
└ 74.113.49.192/304ERIE-COUNTY---DISSunknown———
└ 74.113.49.196/304RUSSELL-BONDunknown———
└ 74.113.49.200/298CATHOLIC-HEALTH-R2unknown———
└ 74.113.49.208/2816M-AND-T-BANKunknown———
└ 74.113.49.224/2732CATHOLIC-HEALTH-V3unknown———
└ 74.113.50.0/24256ALLISON-TRANSMISSIONAllison Transmission (C04612780) · USReassignedJun 18, 2013abuse@zayo.com
via ZAYO-CCF-74-113-48-0
└ 74.113.51.0/2664HAMILTON-COUNTYunknown———
└ 74.113.51.64/304HAMILTON-COUNTYunknown———
└ 74.113.51.68/304SEVEN-CORNERS--INCunknown———
└ 74.113.51.72/298OURHEALTHunknown———
└ 74.113.51.80/304SEVEN-CORNERS--INCunknown———
└ 74.113.51.84/304ELITE-BROKERAGE-SERVICES--INCunknown———
└ 74.113.51.88/304ELITE-BROKERAGE-SERVICES--INCunknown———
└ 74.113.51.96/298FIBERTECH-TURNUP-IPLSunknown———
└ 74.113.51.104/298COOK-GENERAL-BIOTECHNOLOGY-2unknown———
└ 74.113.51.196/304NET-74-113-51-196-30unknown———
└ 74.113.51.224/2732NET-74-113-51-224-27unknown———
└ 74.113.52.0/2816MASSACHUSETTS-MUTUAL-LIFE-INSURANCE-COMPANYunknown———
└ 74.113.52.16/304MASSACHUSETTS-MUTUAL-LIFE-INSURANCE-COMPANYunknown———
└ 74.113.53.0/2816CROMWELL-FIRE---LANunknown———
└ 74.113.53.16/2816DERINGER-NEY-INC2unknown———
└ 74.113.53.32/304ATTunknown———
└ 74.113.53.36/304VISITING-NURSE-ASSOCIATIONunknown———
└ 74.113.53.40/304VENAN-ENTERTAINMENT-INCunknown———
└ 74.113.53.44/304SPRINGFIELD-MEDICAL-ASSOCIATESunknown———
└ 74.113.53.48/298SPRINGFIELD-MEDICAL-ASSOCIATESunknown———
└ 74.113.53.56/304TOWN-OF-EAST-HARTFORDunknown———
└ 74.113.53.60/304NUTMEG-STATE-FEDERAL-CREDIT-UNIONunknown———
└ 74.113.53.64/2732TOWN-OF-EAST-HARTFORDunknown———
└ 74.113.53.96/304SS-AND-C-TECHNOLOGIESunknown———
└ 74.113.53.100/304FARMINGTON-SAVINGS-BANKunknown———
└ 74.113.53.104/298TOWN-OF-EAST-HARTFORDunknown———
└ 74.113.53.112/2816FARMINGTON-SAVINGS-BANKunknown———
└ 74.113.53.128/2732COURT-SQUARE-GROUPunknown———
└ 74.113.53.176/304GOODWIN-COLLEGEunknown———
└ 74.113.53.180/304BARTON-ASSOCIATESunknown———
└ 74.113.53.184/304ALLEN-TECHNOLOGIESunknown———
└ 74.113.53.188/304CONSOLIDATED-HEALTH-PLANSunknown———
└ 74.113.53.192/2732GOODWIN-COLLEGEunknown———
└ 74.113.53.224/2732VISITING-NURSE-ASSOCIATIONunknown———
└ 74.113.54.0/24256CAMDEN-CITY-PUBLIC-SCHOOLSunknown———
└ 74.113.55.0/2732TRUMP-ENTERTAINMENT-RESORTSunknown———
└ 74.113.55.32/2816AIRWAVE-NETWORKS-LANunknown———
└ 74.113.55.48/304FIDELIS-CAREunknown———
└ 74.113.55.52/304PAVLOV-MEDIAunknown———
└ 74.113.55.56/298SOMERDALE-PARK-SCHOOLunknown———
└ 74.113.55.64/2816FIDELIS-CAREunknown———
└ 74.113.55.80/2816FLORENCE-TOWNSHIP-SCHOOLSunknown———
└ 74.113.55.96/2816PAULSBORO-PUBLIC-SCHOOLSunknown———
└ 74.113.55.112/304BRENNANS-OFFICE-INTERIORSunknown———
└ 74.113.55.116/304BRENNANS-OFFICE-INTERIORSunknown———
└ 74.113.55.120/304CAMDEN-CITY-PUBLIC-SCHOOLSunknown———
└ 74.113.55.124/304CAMDEN-CITY-PUBLIC-SCHOOLSunknown———
└ 74.113.55.128/2816BWIN-PARTY-ENTERTAINMENT-NJ-LLCunknown———
└ 74.113.55.144/304BWIN-PARTY-ENTERTAINMENT-NJ-LLCunknown———
└ 74.113.55.148/304ARCADIA-UNIVERSITYunknown———
└ 74.113.55.152/298ROCKEFELLER-TRUST-COMPANYunknown———
└ 74.113.55.160/304SOUTH-JERSEY-INDUSTRIES-INCunknown———
└ 74.113.55.164/304M-AND-T-BANKunknown———
└ 74.113.55.168/304HOPEWELL-RADIOLOGY-GROUPunknown———
└ 74.113.55.172/304THE-ARC-MERCERunknown———
└ 74.113.55.176/2816M-AND-T-BANKunknown———
└ 74.113.55.192/2664HOPEWELL-RADIOLOGY-GROUPunknown———

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

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

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses
TypeAddressesShareRanges
Business88043%72
Internet provider65632%5
Unknown51225%2

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