205.161.64.0/19

IPv4 market

Path

1 · Holder

Cogent Communications, LLC

record created Mar 8, 1995

2 · Leased from

Rackdog

for its owner Cogent Communications, LLC

3 · Announced by

AS174 Cogent Communications, LLC

since Nov 2024 · 24 mo ago

4 · Use

ISP proxy

anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

Name	In 205.161.64.0/19	/24s
Rackdog	8,192100%	32

Leased from

Owners leasing their own space

Name	In 205.161.64.0/19	/24s
Cogent Communications, LLC	8,192100%	32

Lineage

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

205.161.64.0/19

From the registry to its use

Mar 8, 1995
Registry record
Cogent Communications, LLC
Direct Allocation (legacy, pre-1997)
205.160.0.0/14
May 9, 2005– May 16, 2024
Announced
AS1239 Cogent Communications, LLC
as part of 205.160.0.0/14
205.160.0.0/14
Dec 4, 2020– Jan 8, 2021
Announced
AS1239 Cogent Communications, LLC
May 5, 2024– today
Announced
AS174 Cogent Communications, LLC
as part of 205.160.0.0/14
205.160.0.0/14
May 5, 2024– May 16, 2024
Announced
AS1239 Cogent Communications, LLC
Sep 14, 2024– Sep 25, 2024
Announced
AS174 Cogent Communications, LLC
Internet provider
Nov 13, 2024– today
Announced
AS174 Cogent Communications, LLC
Internet provider
May 27, 2026
Assigned
RCN
Reassigned
205.161.64.0/19
today
Leased from
Rackdog
IP broker

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
205.160.0.0/14 since May 2024	AS174	Internet provider	20 2 always on	Cogent Communications, LLC

More specific

Announcements inside

Prefix	Origin	Type	Leased from	Holder
205.161.64.0/20 since Jul 2024	AS6079	ISP proxy	IP broker Rackdog	Cogent Communications, LLC
205.161.64.0/21 since Aug 2024	AS11404	ISP proxy	IP broker Rackdog	Cogent Communications, LLC
205.161.72.0/21 since Oct 2024	AS11404	ISP proxy	IP broker Rackdog	Cogent Communications, LLC
205.161.80.0/20 since Jul 2024	AS6079	ISP proxy	IP broker Rackdog	Cogent Communications, LLC
205.161.80.0/21 since Oct 2024	AS11404	ISP proxy	IP broker Rackdog	Cogent Communications, LLC
205.161.88.0/21 since Oct 3, 2026	AS7029	ISP proxy	IP broker Rackdog	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.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
205.160.0.0/14	262,144	COGENT-205-160-0	Cogent Communications, LLC (COGC) · US	Direct Allocation	Mar 8, 1995	[email protected]
└ 205.161.64.0/19	8,192	RACKDOG-CGNT-NET-36	RCN (C11605231) · US	Reassigned	May 27, 2026	[email protected] 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

Announcement Routing history Whois & 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

AS174

US

Name: Cogent Communications, LLC
Type: Internet provider
Registered: May 16, 1996
Domain: cogentco.com
Website: www.cogentco.com/
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed
VPN servers: 1,658