LAYER3 INTEL
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Data as of Nov 7, 2026

66.37.32.0/20

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
75% of it

Residential-proxy exits

Proxy exits
1
0.02% of its addresses · 30 days
Spread
1 of 16
/24s with at least one exit
Providers
2
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

1 observation

Proxy providers listing exits

  • AnyIP
  • FloppyData

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

PrefixOriginTypeProxy exitsHolderRPKI
66.37.32.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
66.37.34.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
66.37.36.0/24
since Nov 2021
AS46887Internet providerZayo Bandwidth
66.37.37.0/24
since May 2014
AS35966BusinessZayo Bandwidth
66.37.38.0/24
since Nov 2021
AS46887Internet providerZayo Bandwidth
66.37.40.0/23
since Nov 2021
AS46887Internet providerZayo Bandwidth
66.37.42.0/24
since Feb 2014
AS46887UnknownZayo Bandwidth
66.37.43.0/24
since Jan 2014
AS46887Internet providerZayo Bandwidth
66.37.46.0/24
since May 2021
AS33435Business1Zayo Bandwidth
66.37.47.0/24
since Nov 2013
AS11713HostingZayo 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
66.37.32.0/204,096ZAYO-CCF-66-37-32-0Zayo Bandwidth (ZAYOB) · USDirect AllocationOct 24, 2013abuse@zayo.com
└ 66.37.32.16/298LTF-LT-508-66-37-32-16-29unknown———
└ 66.37.32.64/298LTF--66-37-32-64-29unknown———
└ 66.37.32.88/298LTF--66-37-32-88-29unknown———
└ 66.37.32.96/298LTF--66-37-32-96-29unknown———
└ 66.37.32.104/298LTF--66-37-32-104-29unknown———
└ 66.37.32.112/298LTF--66-37-32-112-29unknown———
└ 66.37.32.120/298LTF--66-37-32-120-29unknown———
└ 66.37.32.208/2816LTF-LT-797-66-37-32-208-28unknown———
└ 66.37.33.32/2732LTF--66-37-33-32-27unknown———
└ 66.37.33.128/2816LTF--66-37-33-128-28unknown———
└ 66.37.33.144/298NET-66-37-33-144-29unknown———
└ 66.37.33.208/2816LTF--66-37-33-208-28unknown———
└ 66.37.33.224/2732LTF--66-37-33-224-27unknown———
└ 66.37.34.32/298LTF--66-37-34-32-29unknown———
└ 66.37.34.48/298LTF-LT-844-66-37-34-48-29unknown———
└ 66.37.34.56/298NET-66-37-34-56-29unknown———
└ 66.37.34.96/298LTF--66-37-34-96-29unknown———
└ 66.37.34.120/298NET-66-37-34-120-29unknown———
└ 66.37.34.128/2732NET-66-37-34-128-27unknown———
└ 66.37.34.160/298NET-LT-523-66-37-34-160-29unknown———
└ 66.37.34.248/298NET-SD-50149-66-37-34-248-29unknown———
└ 66.37.35.16/2816LTF--66-37-35-16-28unknown———
└ 66.37.35.96/2732LTF--66-37-35-96-27unknown———
└ 66.37.35.132/304LTF-LT-751-66-37-35-132-30unknown———
└ 66.37.35.192/2732LTF-66-37-35-192-27unknown———
└ 66.37.36.0/2816LTF-LT-849-66-37-36-0-28unknown———
└ 66.37.36.16/298LTF--66-37-36-16-29unknown———
└ 66.37.36.24/298NET-66-37-36-24-29unknown———
└ 66.37.36.32/298LTF-LT-039-66-37-36-32-29unknown———
└ 66.37.36.40/298NET-LT-794-66-37-36-40-29unknown———
└ 66.37.36.88/298NET-66-37-36-88-29unknown———
└ 66.37.36.124/304LTF-0-66-37-36-124-30unknown———
└ 66.37.36.128/2732LTF-0-66-37-36-128-27unknown———
└ 66.37.36.168/298LTF--66-37-36-168-29unknown———
└ 66.37.36.192/2732LTF-0-66-37-36-192-27unknown———
└ 66.37.36.224/298LTF--66-37-36-224-29unknown———
└ 66.37.36.232/298LTF--66-37-36-232-29unknown———
└ 66.37.37.0/24256NET-66-37-37-0-24AEW Capital (C04853367) · USReassignedJan 22, 2014abuse@zayo.com
via ZAYO-CCF-66-37-32-0
└ 66.37.38.16/298LTF--66-37-38-16-29unknown———
└ 66.37.38.56/298NET-66-37-38-56-29unknown———
└ 66.37.38.128/2664LTF-0-66-37-38-128-26unknown———
└ 66.37.38.224/2732NET-LT-531-66-37-38-224-27unknown———
└ 66.37.40.56/298LTF--66-37-40-56-29unknown———
└ 66.37.40.64/2732NET-66-37-40-64-27unknown———
└ 66.37.40.128/2664NET-LT-751-66-37-40-128-26unknown———
└ 66.37.41.0/25128LTF--66-37-41-0-25unknown———
└ 66.37.41.128/298NET-66-37-41-128-29unknown———
└ 66.37.41.184/298LTF--66-37-41-184-29unknown———
└ 66.37.41.192/2732NET-66-37-41-192-27unknown———
└ 66.37.42.0/24256NET-66-37-42-0-24Cyber-Ark Software (C04852424) · USReassignedJan 20, 2014abuse@zayo.com
via ZAYO-CCF-66-37-32-0
└ 66.37.46.0/24256NET-0-66-37-46-0-24City of Springfield, Massachusetts (CSM-102) · USReassignedApr 5, 2021—
└ 66.37.47.0/24256LTF--66-37-47-0-24Granite Block (C04754270) · USReassignedNov 4, 2013abuse@zayo.com
via ZAYO-CCF-66-37-32-0

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

4,096 addresses
TypeAddressesShareRanges
Internet provider3,07275%8
Business51213%2
Hosting2566.3%1
Unknown2566.3%1

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