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Data as of Nov 5, 2026

64.20.187.0/24

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
AS27506
Type
Unknown
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
64.20.176.0/20
since Oct 2006
AS27506Internet provider2Zayo Bandwidth
64.20.160.0/19
since Oct 2006
AS27506Internet provider8Zayo 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
64.20.160.0/198,192ZAYO-CCF-64-20-160-0Zayo Bandwidth (ZAYOB) · USDirect AllocationApr 20, 2005abuse@zayo.com
└ 64.20.187.0/24256NET-SD-64-20-187-0-24Theory LLC (C05689506) · USReassignedApr 20, 2015abuse@zayo.com
via ZAYO-CCF-64-20-160-0

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

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Registry

Holder

Organization
Zayo Bandwidth
Handle
ZAYOB
Range
64.20.160.0/19
Registration type
Direct Allocation
Record created
Apr 20, 2005
Origin network

AS27506

US
Name
Crown Castle Fiber LLC
Type
Internet provider
Registered
Mar 19, 2003
Domain
zayo.com
Industry
Computer and Information Technology
Spamhaus ASN-DROP
not listed