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Data as of Nov 4, 2026

66.211.152.0/23

No anonymizer space · no proxy exits in 30 days

Fibercast Corporation · space held by FirstLight Networks, LLC

Announcement
66.211.144.0/20
No RPKI
Announced by
AS10367
Type
Business
50% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
66.211.128.0/19
since Jan 2021
AS13536Business12
1 always on
FirstLight Networks, LLC
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
66.211.153.0/24
since Oct 2018
AS53784BusinessFirstLight Networks, LLC

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
66.211.128.0/198,192FLNET-19FirstLight Networks, LLC (FNL-76) · USDirect AllocationDec 19, 2003[email protected]
└ 66.211.152.0/23512FIRSTLIGHT-NET-66-211-152-0-23FirstLight Fiber, Inc. (TVC-11) · USReassignedApr 22, 2015[email protected]

Composition

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

Announced space

Address share

Announced space

Types across the prefix

512 addresses
TypeAddressesShareRanges
Business25650%1
Residential25650%1

Network & registry

AnnouncementRouting historyWhois & abuse
Announced by

Covering announcement 66.211.144.0/20

Prefix
66.211.144.0/20
Announced by
AS10367 Fibercast Corporation
Type
Residential
Proxy exits
2
RPKI
No RPKI
Netname
FLNET-19
Registrant
FirstLight Networks, LLC
RIR
ARIN
Origin network

AS10367

US
Name
Fibercast Corporation
Type
Internet provider
Registered
Jul 14, 1997
Domain
fibercast.net
Website
www.fibercast.net/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed