149.51.232.0/21

IPv4 market

Path

1 · Holder

Cogent Communications, LLC

record created Jan 28, 1992

2 · Leased from

Rackdog

for its owner Cogent Communications, LLC

3 · Announced by

AS7029 Windstream Communications LLC

since Feb 2023 · 3.7 yr ago

4 · Use

Datacenter proxy

anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

Name	In 149.51.232.0/21	/24s
Rackdog	2,048100%	8

Leased from

Owners leasing their own space

Name	In 149.51.232.0/21	/24s
Cogent Communications, LLC	2,048100%	8

Lineage

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

149.51.232.0/21

From the registry to its use

Jan 28, 1992
Registry record
Cogent Communications, LLC
Direct Allocation (legacy, pre-1997)
149.51.0.0/16
Sep 15, 2006– today
Announced
AS174 Cogent Communications, LLC
as part of 149.50.0.0/15
149.50.0.0/15
May 28, 2022– Aug 7, 2022
Announced
AS398465 Rackdog, LLC
Hosting
Jul 27, 2022– Aug 7, 2022
Announced
AS980 Northern Cable and Fiber, LLC
Oct 19, 2022– Feb 15, 2023
Announced
AS399928 Paulding Putnam Electric Trust, Inc.
Internet provider
Feb 4, 2023– today
Announced
AS7029 Windstream Communications LLC
Internet provider
May 27, 2026
Assigned
RCN
Reassigned
149.51.192.0/18
Jul 29, 2026
Route object
AS398465 Rackdog, LLC
RADB route object for AS398465 Rackdog, LLC, maintainer MAINT-AS22773
149.51.232.0/22
today
Leased from
Rackdog
IP broker

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Leased from	Proxy exits	RPKI
149.50.0.0/15 since Sep 2006	AS174	Internet provider	IP broker Rackdog (part)	3,398 980 always on

More specific

Announcements inside

Prefix	Origin	Type	Leased from	Holder
149.51.232.0/24 since Feb 2026	AS398465	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
149.51.233.0/24 since Feb 2026	AS398465	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
149.51.234.0/24 since Feb 2026	AS398465	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
149.51.235.0/24 since Mar 2026	AS398465	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
149.51.236.0/24 since Jul 2026	AS398465	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
149.51.238.0/23 since Jan 2025	AS398465	Datacenter 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
149.51.0.0/16	65,536	COGENT-149-51-16	Cogent Communications, LLC (COGC) · US	Direct Allocation	Jan 28, 1992	[email protected]
└ 149.51.192.0/18	16,384	RACKDOG-CGNT-NET-12	RCN (C11605110) · US	Reassigned	May 27, 2026	[email protected] via COGENT-149-51-16

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses

Type	Addresses	Share	Ranges
Datacenter proxyanonymizer	1,792	88%	6
ISP proxyanonymizer	256	13%	1

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

IPv4 market

Holder

Holder in the market →

Organization: Cogent Communications, LLC
Handle: COGC
Range: 149.51.0.0/16
Registration type: Direct Allocation
Record created: Jan 28, 1992
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