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Data as of Nov 8, 2026

204.180.0.0/14

49,152 anonymizer addresses · 19% · ISP proxy

Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS174
Type
Internet provider
75% of it
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Oct 18, 1994
2 · Leased from
Rackdog
for its owner Cogent Communications, LLC
3 · Announced by
AS174 Cogent Communications, LLC
since May 2024 · 2.5 yr ago
4 · Use
Internet provider
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 204.180.0.0/14/24s
Rackdog
49,15219%
192
Leased from

Owners leasing their own space

NameIn 204.180.0.0/14/24s
Cogent Communications, LLC
49,15219%
192

Lineage

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

204.180.0.0/14

From the registry to its use

  1. Oct 18, 1994
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    204.180.0.0/14
  2. Sep 20, 1999
    Route object
    AS7235 LanMinds, Inc.
    RADB route object for AS7235 LanMinds, Inc., maintainer MAINT-AS1828
    204.182.55.0/24
  3. Sep 20, 1999
    Route object
    AS7235 LanMinds, Inc.
    RADB route object for AS7235 LanMinds, Inc., maintainer MAINT-AS1828
    204.182.56.0/24
  4. Sep 20, 1999
    Route object
    AS7235 LanMinds, Inc.
    RADB route object for AS7235 LanMinds, Inc., maintainer MAINT-AS1828
    204.182.57.0/24
  5. Feb 12, 2001
    Route object
    AS19625 Metro Communications Company
    NTTCOM route object for AS19625 Metro Communications Company, maintainer MAINT-KEYCONN
    204.182.38.0/23
  6. Dec 1, 2002
    Route object
    AS3491 PCCW Global (HK) Ltd.
    RADB route object for AS3491 PCCW Global (HK) Ltd., maintainer MAINT-AS3491
    204.180.160.0/19
  7. Jun 19, 2004
    Route object
    AS10397 Momentum Telecom, Inc.
    RADB route object for AS10397 Momentum Telecom, Inc., maintainer MAINT-AS3491
    204.183.144.0/21
  8. May 9, 2005– May 16, 2024
    Announced
    AS1239 Cogent Communications, LLC
  9. Mar 15, 2007
    Route object
    AS7029 Windstream Communications LLC
    RADB route object for AS7029 Windstream Communications LLC, maintainer MAINT-AS7029
    204.180.198.0/23
  10. Apr 7, 2008
    Route object
    AS30440 Xapiens Corporation
    RADB route object for AS30440 Xapiens Corporation, maintainer MAINT-AS30440
    204.181.75.0/24
  11. Sep 14, 2009
    Route object
    AS1438 Pioneer State Mutual Insurance Co.
    RADB route object for AS1438 Pioneer State Mutual Insurance Co., maintainer MAINT-CHTR-WD
    204.180.74.0/24
  12. Nov 4, 2009
    Route object
    AS46536 ViaSat, Inc.
    RADB route object for AS46536 ViaSat, Inc., maintainer MAINT-AS1828
    204.182.234.0/23
  13. Nov 4, 2009
    Route object
    AS46536 ViaSat, Inc.
    RADB route object for AS46536 ViaSat, Inc., maintainer MAINT-AS1828
    204.182.236.0/22
  14. May 26, 2010
    Route object
    AS36827 Pine Belt Telephone Co
    RADB route object for AS36827 Pine Belt Telephone Co, maintainer MAINT-CHTR-WD
    204.181.60.0/22
  15. Jul 13, 2011
    Route object
    AS21547 FirstLight Fiber, Inc.
    RADB route object for AS21547 FirstLight Fiber, Inc., maintainer MAINT-AS1828
    204.181.128.0/23
  16. Aug 28, 2012
    Route object
    AS27966 Telecorp
    RADB route object for AS27966 Telecorp, maintainer MAINT-AS23520
    204.181.52.0/22
  17. Aug 29, 2012
    Route object
    AS28513 UNINET
    RADB route object for AS28513 UNINET, maintainer MAINT-AS28513
    204.181.52.0/22
  18. Feb 25, 2013
    Route object
    AS7029 Windstream Communications LLC
    RADB route object for AS7029 Windstream Communications LLC, maintainer MAINT-AS7029
    204.180.200.0/21
  19. Feb 14, 2018
    Route object
    AS26554 US Signal Company, L.L.C.
    RADB route object for AS26554 US Signal Company, L.L.C., maintainer MAINT-AS26554
    204.180.65.0/24
  20. Feb 16, 2018
    Route object
    AS17043 Aeris Communications, Inc.
    RADB route object for AS17043 Aeris Communications, Inc., maintainer MAINT-SWITCH
    204.180.65.0/24
  21. Oct 17, 2018
    Route object
    AS27209 JAB Wireless, INC.
    RADB route object for AS27209 JAB Wireless, INC., maintainer MAINT-RR
    204.181.32.0/24
  22. May 21, 2020
    Route object
    AS40676 Psychz Networks
    RADB route object for AS40676 Psychz Networks, maintainer MAINT-AS40676
    204.183.96.0/24
  23. May 21, 2020
    Route object
    AS40676 Psychz Networks
    RADB route object for AS40676 Psychz Networks, maintainer MAINT-AS40676
    204.183.97.0/24
  24. Jul 28, 2020
    Route object
    AS3598 Microsoft Corporation
    RADB route object for AS3598 Microsoft Corporation, maintainer MAINT-AS8075
    204.182.144.0/24
  25. May 11, 2021
    Route object
    AS1239 Cogent Communications, LLC
    ARIN route object for AS1239 Cogent Communications, LLC, maintainer MNT-COGC
  26. Mar 24, 2022
    Route object
    AS270118 Soluciones, Analiticos y Servicios Team
    ALTDB route object for AS270118 Soluciones, Analiticos y Servicios Team, maintainer MAINT-SPRINT
    204.182.128.0/18
  27. Mar 24, 2022
    Route object
    AS270118 Soluciones, Analiticos y Servicios Team
    ALTDB route object for AS270118 Soluciones, Analiticos y Servicios Team, maintainer MAINT-SPRINT
    204.182.192.0/18
  28. Jun 6, 2023
    Route object
    AS174 Cogent Communications, LLC
    ARIN route object for AS174 Cogent Communications, LLC, maintainer MNT-COGC
  29. May 5, 2024– today
    Announced
    AS174 Cogent Communications, LLC
    Internet provider
  30. Nov 4, 2026
    Route object
    AS22773 Cox Communications Inc.
    RADB route object for AS22773 Cox Communications Inc., maintainer MAINT-AS22773
    204.181.192.0/18

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

Arrived
PrefixOriginTypeLeased fromHolderRPKI
204.180.0.0/20
since Oct 2023
AS36549ResidentialCogent Communications, LLC
via WestTel Ltd.
204.180.130.0/24
since Apr 2018
AS53866BusinessCogent Communications, LLC
204.180.133.0/24
since Apr 2024
AS14162BusinessCogent Communications, LLC
204.180.153.0/24
since Mar 2025
AS174UnknownCogent Communications, LLC
204.180.228.0/24
since May 2018
AS200946BusinessCogent Communications, LLC
204.180.232.0/21
since Oct 2006
AS32068UnknownCogent Communications, LLC
via Memphis Networx
204.180.235.0/24
since Mar 2010
AS32068UnknownCogent Communications, LLC
via Memphis Networx
204.181.0.0/21
since May 2005
AS32068UnknownCogent Communications, LLC
via Memphis Networx
204.181.1.0/24
since May 2005
AS32068UnknownCogent Communications, LLC
via Memphis Networx
204.181.152.0/21
since Jan 2014
AS3364BusinessCogent Communications, LLC
204.181.192.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.181.208.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.181.224.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.181.240.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.182.64.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.182.80.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.182.96.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.182.112.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.182.232.0/24
since Feb 2011
AS46536ResidentialCogent Communications, LLC
204.182.233.0/24
since Sep 2016
AS46536ResidentialCogent Communications, LLC
204.182.234.0/24
since Oct 2016
AS46536ResidentialCogent Communications, LLC
204.182.235.0/24
since Jul 2010
AS46536ResidentialCogent Communications, LLC
204.182.236.0/24
since Jul 2010
AS46536ResidentialCogent Communications, LLC
204.182.237.0/24
since Jul 2010
AS46536ResidentialCogent Communications, LLC
204.182.238.0/24
since Jul 2010
AS46536ResidentialCogent Communications, LLC
204.182.239.0/24
since Jul 2010
AS46536ResidentialCogent Communications, LLC
204.183.0.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.183.16.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.183.32.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.183.48.0/20
since Jul 2026
AS22773ISP proxyIP broker RackdogCogent Communications, LLC
204.183.80.0/20
since May 2026
AS174ResidentialCogent Communications, LLC
204.183.80.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.81.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.82.0/24
since May 2026
AS174ResidentialCogent Communications, LLC
204.183.83.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.84.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.85.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.86.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.87.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.88.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.89.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.90.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.91.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.92.0/24
since May 2026
AS174ResidentialCogent Communications, LLC
204.183.93.0/24
since May 2026
AS174ResidentialCogent Communications, LLC
204.183.94.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.95.0/24
since May 2026
AS174Internet providerCogent Communications, LLC
204.183.220.0/22
since Dec 2024
AS174UnknownCogent 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
204.180.0.0/14262,144COGENT-204-180-0Cogent Communications, LLC (COGC) · USDirect AllocationOct 18, 1994abuse@cogentco.com
└ 204.180.0.0/204,096LOGIC-COMMUNICATIONS-CGNT-NET-1WestTel Ltd. (WESTT) · KYReallocatedMar 25, 2024noc@logic.ky
└ 204.180.64.0/23512SPRINTLINKunknown———
└ 204.180.72.0/25128SPRINTLINKunknown———
└ 204.180.72.192/2664SPRINTLINKunknown———
└ 204.180.73.0/24256SPRINTLINKunknown———
└ 204.180.106.88/298SPRINTLINKunknown———
└ 204.180.119.160/298105657unknown———
└ 204.180.126.56/321SPRINTLINKunknown———
└ 204.180.130.0/24256SPRINTLINK-FON-34343818247975Omeda Communications (OMEDAC) · USReassignedMar 7, 2001abuse@omeda.com
└ 204.180.133.0/24256SPRINTLINKFEDERAL HOME LOAN BANK of PITTSBURGH (FHLB-6) · USReassignedApr 24, 2017dave.saunders@fhlb-pgh.com
└ 204.180.153.0/24256SPRINTLINKSonicWall (SONIC-13) · USReassignedJan 20, 2006eakinsanya@sonicwall.com
└ 204.180.196.0/2732SPRINTLINKunknown———
└ 204.180.196.160/2732SPRINTLINKunknown———
└ 204.180.232.0/212,048SPRINTLINKMemphis Networx (MEMPH-1) · USReallocatedSep 19, 2006abuse@zayo.com
└ 204.180.232.0/24256MNX-ACCES002-1unknown———
└ 204.180.233.0/2816MNX-COVEN001-1unknown———
└ 204.180.233.16/2816MNX-UNITE001unknown———
└ 204.180.233.32/2816MNX-TROP0001unknown———
└ 204.180.233.48/298MNX-BELZ0001-1unknown———
└ 204.180.233.56/298MNX-MEDIA001unknown———
└ 204.180.233.64/298MNX-BARTER001unknown———
└ 204.180.233.112/2816MNX-LINK001-2unknown———
└ 204.180.234.0/24256MNX-BELZ0001-2unknown———
└ 204.180.235.0/2732MNX-DSMAR001unknown———
└ 204.180.235.32/298MNX-LANDM001unknown———
└ 204.180.235.48/2816MNX-QATALYSTunknown———
└ 204.180.235.64/298MNX-EVERG001unknown———
└ 204.180.235.96/2816MNX-MUS00001unknown———
└ 204.180.235.120/298MNX-COVEN001-2unknown———
└ 204.180.236.0/221,024MNX-PEABO001Peabody Office Tower (C01958433) · USReassignedJul 12, 2008abuse@zayo.com
via SPRINTLINK
└ 204.181.0.0/212,048SPRINTLINKMemphis Networx (MEMPH-1) · USReallocatedSep 19, 2006abuse@zayo.com
└ 204.181.0.8/298MNX-ROYAL001unknown———
└ 204.181.0.16/2816MNX-PRINT001-1unknown———
└ 204.181.0.32/2816MNX-PRINT001-2unknown———
└ 204.181.0.48/298MNX-GTX00001unknown———
└ 204.181.0.56/298MNX-GLOBA001unknown———
└ 204.181.0.64/2816MNX-GYRUS001unknown———
└ 204.181.0.80/298MNX-INTIM001unknown———
└ 204.181.0.88/298MNX-MATA0001unknown———
└ 204.181.0.96/298MNX-TENNE001unknown———
└ 204.181.0.104/298MNX-FEDEX001unknown———
└ 204.181.0.112/2816MNX-LENNY001unknown———
└ 204.181.0.128/2816MNX-PITTC001unknown———
└ 204.181.0.144/2816MNX-HEALT001unknown———
└ 204.181.0.160/2732MNX-ODENM001unknown———
└ 204.181.0.192/2732MNX-SHELBY001unknown———
└ 204.181.0.224/2816MNX-TRIUM001unknown———
└ 204.181.0.240/2816MNX-CONTE001unknown———
└ 204.181.1.0/24256MNX-VO2NE001V02 Networx (C01958132) · USReassignedJul 11, 2008abuse@zayo.com
via SPRINTLINK
└ 204.181.2.0/24256PERSPECTIVE-BLOCK1unknown———
└ 204.181.3.0/24256UTMG0001unknown———
└ 204.181.4.0/24256MNX-MANAG001-2unknown———
└ 204.181.5.0/24256MNX-INFUT001-2unknown———
└ 204.181.6.0/2732MNX-SHELB001-2unknown———
└ 204.181.6.32/2732MNX-JACKS001unknown———
└ 204.181.6.64/2732MNX-MYHEA001unknown———
└ 204.181.6.128/2732MNX-REFCO001unknown———
└ 204.181.6.160/2732MNX-SOFTW001unknown———
└ 204.181.6.192/2664MNX-COMPU001unknown———
└ 204.181.7.0/24256PERSPECTIVE-BLOCK2unknown———
└ 204.181.34.0/24256SPRINTLINKunknown———
└ 204.181.35.96/2732SPRINTLINKunknown———
└ 204.181.36.0/298SPRINTLINKunknown———
└ 204.181.36.48/298FON-343442334474799unknown———
└ 204.181.36.224/2732SPRINTLINKunknown———
└ 204.181.38.112/2816SPRINTLINKunknown———
└ 204.181.52.0/221,024GREYBEARD-TECHNOLOGY-LLCTELECORP (TELEC-88) · HNReassignedJun 22, 2011Serguei.hulse@telecorp.hn
└ 204.181.64.64/2664SPRINTLINKunknown———
└ 204.181.152.0/212,048SPRINT-CCB59FComputer Systems Design Company (CSD) · USReassignedDec 20, 1994john.nebel@csd.net
└ 204.181.181.24/298105657unknown———
└ 204.181.181.40/298SPRINTLINKunknown———
└ 204.181.181.112/2816105657unknown———
└ 204.181.181.128/25128105657unknown———
└ 204.181.186.144/2816105679unknown———
└ 204.181.192.0/1816,384RACKDOG-CGNT-NET-29RCN (C11605224) · USReassignedMay 27, 2026abuse@cogentco.com
via COGENT-204-180-0
└ 204.182.0.16/2816SPRINTLINKunknown———
└ 204.182.1.80/2816SPRINTLINKunknown———
└ 204.182.1.144/2816SPRINTLINKunknown———
└ 204.182.1.176/2816SPRINTLINKunknown———
└ 204.182.1.192/2816SPRINTLINKunknown———
└ 204.182.1.208/298SPRINTLINKunknown———
└ 204.182.3.32/2816SPRINTLINKunknown———
└ 204.182.3.56/321SPRINTLINKunknown———
└ 204.182.3.160/2816SPRINTLINKunknown———
└ 204.182.3.224/2816SPRINTLINKunknown———
└ 204.182.4.32/2816SPRINTLINKunknown———
└ 204.182.5.0/298SPRINTLINKunknown———
└ 204.182.5.96/2816SPRINTLINKunknown———
└ 204.182.5.112/298SPRINTLINKunknown———
└ 204.182.5.120/298SPRINTLINKunknown———
└ 204.182.5.224/298SPRINTLINKunknown———
└ 204.182.5.240/2816SPRINTLINKunknown———
└ 204.182.40.192/2816SPRINTLINKunknown———
└ 204.182.40.208/2816SPRINTLINKunknown———
└ 204.182.40.252/321SPRINTLINKunknown———
└ 204.182.41.16/2816SPRINTLINKunknown———
└ 204.182.41.96/298SPRINTLINKunknown———
└ 204.182.41.112/2816SPRINTLINKunknown———
└ 204.182.41.176/2816SPRINTLINKunknown———
└ 204.182.42.0/298SPRINTLINKunknown———
└ 204.182.59.0/2664SPRINTLINKunknown———
└ 204.182.59.144/298SPRINTLINKunknown———
└ 204.182.59.152/298SPRINTLINKunknown———
└ 204.182.64.0/1816,384RACKDOG-CGNT-NET-30RCN (C11605225) · USReassignedMay 27, 2026abuse@cogentco.com
via COGENT-204-180-0
└ 204.182.128.0/204,096SPRINTLINKunknown———
└ 204.182.144.0/204,096FON-343451648081865unknown———
└ 204.182.224.152/298SPRINTLINKunknown———
└ 204.182.224.160/2816SPRINTLINKunknown———
└ 204.182.224.176/298SPRINTLINKunknown———
└ 204.182.224.208/2816SPRINTLINKunknown———
└ 204.182.224.224/2816SPRINTLINKunknown———
└ 204.182.232.0/212,048SPRINTViaSat, Inc. (VIASA-8) · USReassignedMar 5, 2007IP-Admin@viasat.com
└ 204.183.0.0/1816,384RACKDOG-CGNT-NET-31RCN (C11605226) · USReassignedMay 27, 2026abuse@cogentco.com
via COGENT-204-180-0
└ 204.183.112.0/23512SPRINT-CCB771unknown———
└ 204.183.116.0/24256SPRINTLINKunknown———
└ 204.183.117.128/298SPRINTLINKunknown———
└ 204.183.117.144/298SPRINTLINKunknown———
└ 204.183.124.0/24256SPRINTLINKunknown———
└ 204.183.127.64/298SPRINTLINKunknown———
└ 204.183.157.56/298SPRINTLINKunknown———
└ 204.183.176.0/204,096SPRINT-CCB7BFunknown———
└ 204.183.220.0/221,024SPRINTLINKCHAMBERLAIN (CHAMB-12) · USReassignedJun 2, 2016mcoccimiglio@chamberlaingroup.com

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

262,144 addresses
TypeAddressesShareRanges
Internet provider196,20575%68
ISP proxyanonymizer49,15219%12
Residential7,6802.9%15
Unknown5,3762.1%8
Business3,7311.4%53

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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