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Data as of Nov 9, 2026

144.229.88.0/21

Anonymizer · ISP proxy

RCN · space held by Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS6079
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
AS6079 RCN
since Sep 2024 · 2.1 yr ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 144.229.88.0/21/24s
Rackdog
2,048100%
8
Leased from

Owners leasing their own space

NameIn 144.229.88.0/21/24s
Cogent Communications, LLC
2,048100%
8

Lineage

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

144.229.88.0/21

From the registry to its use

  1. Jan 11, 1991
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    144.229.0.0/16
  2. Sep 20, 2024
    Route object
    Rackdog
    RADB route object for AS6079 RCN, maintainer MAINT-AS398465
  3. Sep 20, 2024
    Route object
    Rackdog
    RADB route object for AS11404 Wave Broadband, maintainer MAINT-AS398465
  4. Sep 26, 2024– today
    Announced
    AS6079 RCN
    Internet provider
  5. Jun 17, 2025– today
    Announced
    AS174 Cogent Communications, LLC
    as part of 144.228.0.0/15
    144.228.0.0/15
  6. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesProxy exitsRPKI
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 the announcement: those covering it, widest first, then every record inside it, 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
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

AS6079

US
Name
RCN
Type
Internet provider
Registered
Apr 4, 2001
Domain
astound.com
Website
www.astound.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed