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Data as of Nov 9, 2026

144.229.120.0/21

Anonymizer · ISP proxy

Charter Communications LLC · space held by Cogent Communications, LLC

Announcement
144.229.112.0/20
No RPKI
Announced by
AS20115
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Jan 11, 1991
2 · Leased from
Rackdog
for its owner Cogent Communications, LLC
3 · Announced by
AS20115 Charter Communications LLC
since Feb 2025 · 21 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 144.229.120.0/21/24s
Rackdog
2,048100%
8
Leased from

Owners leasing their own space

NameIn 144.229.120.0/21/24s
Cogent Communications, LLC
2,048100%
8

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesLeased fromProxy exitsHolderRPKI
144.229.96.0/19
since Nov 2024
AS7029ISP proxyIP broker Rackdog2Cogent Communications, LLC
144.228.0.0/15
since Jun 2025
AS174Internet provider20,48016%ISP proxy14
6 always on

Registrations in this block

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

RangeAddressesNetnameHolderTypeCreatedAbuse contact
144.229.0.0/1665,536COGENT-144-229-0Cogent Communications, LLC (COGC) · USDirect AllocationJan 11, 1991abuse@cogentco.com
└ 144.229.0.0/1665,536RACKDOG-CGNT-NET-6RCN (C11605103) · USReassignedMay 27, 2026abuse@cogentco.com
via COGENT-144-229-0

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
Announced by

Covering announcement 144.229.112.0/20

Prefix
144.229.112.0/20
Announced by
AS20115 Charter Communications LLC
Type
ISP proxy
Anonymizer addresses
2,304 addresses · 56%
Leased from
IP broker Rackdog
Proxy exits
2
RPKI
No RPKI
Netname
RACKDOG-CGNT-NET-6
Registrant
RCN
RIR
ARIN
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
144.229.0.0/16
Registration type
Direct Allocation
Record created
Jan 11, 1991
Legacy
yes
Origin network

AS20115

US
Name
Charter Communications LLC
Type
Internet provider
Registered
Mar 26, 2001
Domain
charter.com
Website
www.spectrum.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed