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Data as of Nov 6, 2026

67.200.100.0/23

Anonymizer · ISP proxy

Cablevision Lightpath LLC · space held by GTT Americas, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS54004
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
GTT Americas, LLC
record created Aug 16, 2007 · reallocated to Northern Cable and Fiber, LLC Sep 4, 2025
2 · Leased from
Rackdog
for its owner GTT Americas, LLC
3 · Announced by
AS54004 Cablevision Lightpath LLC
since Apr 2025 · 18 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 67.200.100.0/23/24s
Rackdog
512100%
2
Leased from

Owners leasing their own space

NameIn 67.200.100.0/23/24s
GTT Americas, LLC
512100%
2

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

67.200.100.0/23

From the registry to its use

  1. Aug 16, 2007
    Registry record
    GTT Americas, LLC
    Direct Allocation
    67.200.0.0/17
  2. Jun 15, 2008– Jun 29, 2018
    Announced
    AS6517 LAKENETWORKS
    as part of 67.200.0.0/17
    67.200.0.0/17
  3. Jun 18, 2018– today
    Announced
    AS3257 GTT Communications Inc.
    as part of 67.200.0.0/17
    67.200.0.0/17
  4. Apr 30, 2025
    Route object
    Rackdog
    RADB route object for AS54004 Cablevision Lightpath LLC, maintainer MAINT-AS398465
  5. Apr 30, 2025– today
    Announced
    AS54004 Cablevision Lightpath LLC
    Internet provider
  6. Sep 4, 2025
    Reallocated
    Northern Cable and Fiber, LLC
    Reallocated
    67.200.100.0/23
  7. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
67.200.0.0/17
since Jun 2018
AS3257Internet provider27GTT Americas, LLC

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
67.200.0.0/1732,768RGS-BLK12GTT Americas, LLC (GAL-104) · USDirect AllocationAug 16, 2007abuse@gtt.net
└ 67.200.100.0/23512RACKDOG-GTTRackdog, LLC (RL-859) · USReallocatedApr 24, 2025contact@rackdog.com
└ 67.200.100.0/23512OPTIMUMNorthern Cable and Fiber, LLC (NCFL-7) · USReallocatedSep 4, 2025abuse@northerncablefiber.com
└ 67.200.100.0/23512RCNSprint (C11466174) · USReassignedDec 31, 2025abuse@northerncablefiber.com
via RACKDOG-GTT

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
IPv4 market

Holder

Holder in the market →
Organization
GTT Americas, LLC
Handle
GAL-104
Range
67.200.0.0/17
Registration type
Direct Allocation
Record created
Aug 16, 2007
Reallocated to
Northern Cable and Fiber, LLC (NCFL-7)
Reallocated range
67.200.100.0/23
Reallocated
Sep 4, 2025
Origin network

AS54004

US
Name
Cablevision Lightpath LLC
Type
Internet provider
Registered
Aug 31, 2011
Domain
lightpathfiber.com
Website
lightpathfiber.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed