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Data as of Nov 7, 2026

205.161.88.0/21

Anonymizer · ISP proxy

Windstream Communications LLC · space held by Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS7029
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Oct 3, 2026
from AS11404 Wave Broadband
IPv4 market

Path

Announced by AS7029 since Oct 3, 2026 · 5 wk ago
1 · Holder
Cogent Communications, LLC
record created Mar 8, 1995
2 · Leased from
Rackdog
for its owner Cogent Communications, LLC
3 · Announced by
AS7029 Windstream Communications LLC
since Oct 3, 2026 · 5 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 205.161.88.0/21/24s
Rackdog
2,048100%
8
Leased from

Owners leasing their own space

NameIn 205.161.88.0/21/24s
Cogent Communications, LLC
2,048100%
8

Lineage

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

205.161.88.0/21

From the registry to its use

  1. Mar 8, 1995
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    205.160.0.0/14
  2. Aug 3, 2023– Dec 12, 2023
    Announced
    AS980 Northern Cable and Fiber, LLC
    as part of 205.161.80.0/20
    205.161.80.0/20
  3. Dec 1, 2023– Jan 29, 2024
    Announced
    AS7018 AT&T Enterprises, LLC
    Internet provider
  4. Jan 18, 2024– Feb 10, 2024
    Announced
    AS398465 Rackdog, LLC
    as part of 205.161.80.0/20
    205.161.80.0/20
  5. Jan 18, 2024– Jul 15, 2024
    Announced
    AS7922 Comcast Cable Communications, LLC
    as part of 205.161.80.0/20
    205.161.80.0/20
  6. Jul 4, 2024– today
    Announced
    AS6079 RCN
    as part of 205.161.80.0/20
    205.161.80.0/20
  7. Oct 21, 2024
    Route object
    Rackdog
    RADB route object for AS11404 Wave Broadband, maintainer MAINT-AS398465
  8. Nov 25, 2024– Oct 2, 2026
    Announced
    AS11404 Wave Broadband
    Internet provider
  9. May 27, 2026
    Assigned
    RCN
    Reassigned
    205.161.64.0/19
  10. Oct 2, 2026
    Route object
    Rackdog
    RADB route object for AS7029 Windstream Communications LLC, maintainer MAINT-AS398465
  11. Oct 3, 2026– today
    Announced
    AS7029 Windstream Communications LLC
    Internet provider
  12. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
205.161.80.0/20
since Jul 2024
AS6079ISP proxyIP broker RackdogCogent Communications, LLC
205.161.64.0/19
since Nov 2024
AS174ISP proxyIP broker RackdogCogent Communications, LLC
205.160.0.0/14
since May 2024
AS174Internet provider21
2 always on
Cogent Communications, 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
205.160.0.0/14262,144COGENT-205-160-0Cogent Communications, LLC (COGC) · USDirect AllocationMar 8, 1995abuse@cogentco.com
└ 205.161.64.0/198,192RACKDOG-CGNT-NET-36RCN (C11605231) · USReassignedMay 27, 2026abuse@cogentco.com
via COGENT-205-160-0

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
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
205.160.0.0/14
Registration type
Direct Allocation
Record created
Mar 8, 1995
Legacy
yes
Origin network

AS7029

US
Name
Windstream Communications LLC
Type
Internet provider
Registered
Jul 30, 1996
Domain
uniti.com
Website
www.uniti.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed