LAYER3 INTEL
Get started
Sign in
Data as of Nov 6, 2026

154.21.0.0/16

14,080 anonymizer addresses · 21%283 residential-proxy exits · 30 days

Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS174
Type
Internet provider
38% of it

Residential-proxy exits

Proxy exits
283
0.43% of its addresses · 30 days
Always-on exits
44
16% of its exits
Spread
34 of 256
/24s with at least one exit
Providers
85
selling exits here
Oct 7, 2026 – Nov 5, 2026

Exits seen per day

58K observations
  • ISP proxy · anonymizer
  • Residential
  • Business
  • Hosting
  • Internet provider
  • Unknown

/24s with the most always-on exits

/24Always-on exitsProxy exits
154.21.22.0/241970
154.21.15.0/241293
154.21.146.0/24810
154.21.97.0/24222
154.21.154.0/24114
154.21.199.0/2413
154.21.203.0/2412
154.21.155.0/24017
154.21.96.0/24013
154.21.207.0/2403
154.21.197.0/2403
154.21.94.0/2402
154.21.194.0/2402
154.21.217.0/2402
154.21.90.0/2402
154.21.85.0/2402
154.21.200.0/2402
154.21.81.0/2402
154.21.89.0/2402
154.21.198.0/2402
154.21.87.0/2402
154.21.95.0/2401
154.21.193.0/2401
154.21.157.0/2401

Proxy providers listing exits

  • 2Extract
  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • ColaProxy
  • DataImpulse
  • Datarama
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • Geonode
  • GhostConnect
  • GloryCloud
  • GoProxies
  • GonzoProxy
  • HideProxy
  • IPCola
  • IPFly
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • Kookey
  • LemonBright
  • LemonLabs
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • Maskify
  • MoMoProxy
  • NSocks
  • NextProxy
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PacketStream
  • PrivateByte
  • ProxiesVision
  • Proxio
  • Proxiware
  • Proxmint
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyRack
  • Proxying
  • Proxyma
  • PuraRoute
  • Q2IP
  • RainProxy
  • RapidProxy
  • RealProxy
  • ResiProxies
  • RoamProxy
  • RolaProxy
  • Shifter
  • StrikeProxy
  • SwiftProxy
  • TalorData
  • Thordata
  • TrueProxies
  • VantageProxies
  • VitalExclusive
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Feb 5, 1992
2 · Leased from
Cogent Communications, LLC
its owner, directly
3 · Announced by
AS174 Cogent Communications, LLC
since Sep 2018 · 8.2 yr ago
4 · Use
Proxy providersnamed Webshare, High Proxies, ProxyBonanza, QuarkIP, Bright DataVPN servicesnamed TorGuard
Internet provider

Operators, sellers and brokers

Proxy providers

NameParentIn 154.21.0.0/16/24sRole
Webshare
7,68012%
30
Runs it
High Proxies
1,7922.7%
7
Runs it
ProxyBonanza
1,0241.6%
4
Sells it
QuarkIP
5120.78%
2
Sells it
Bright Data
2560.39%
1
Runs it
Runs itSells it

VPN services

NameParentIn 154.21.0.0/16/24s
TorGuardVPNetworks LLC
7681.2%
3
Leased from

Owners leasing their own space

NameIn 154.21.0.0/16/24s
Cogent Communications, LLC
1,2802.0%
5

Lineage

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

154.21.0.0/16

From the registry to its use

  1. Feb 5, 1992
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    154.21.0.0/16
  2. Sep 10, 2018– today
    Announced
    AS174 Cogent Communications, LLC
    Internet provider
  3. May 21, 2021
    Route object
    AS5650 Frontier Communications of America, Inc.
    RADB route object for AS5650 Frontier Communications of America, Inc., maintainer MAINT-ADMIN-AS398373
    154.21.120.0/22
  4. Aug 5, 2023
    Route object
    AS906 DMIT Cloud Services
    RADB route object for AS906 DMIT Cloud Services, maintainer MAINT-AS174
    154.21.80.0/20
  5. Nov 28, 2024
    Route object
    AS979 NetLab Global
    RADB route object for AS979 NetLab Global, maintainer MAINT-PREMIUM
    154.21.192.0/20
  6. Apr 3, 2025
    Route object
    AS210110 Kvmcloud Network CO., LIMITED
    RADB route object for AS210110 Kvmcloud Network CO., LIMITED, maintainer MAINT-AS54574
    154.21.80.0/20
  7. Jan 27, 2026
    Route object
    AS8126 Cloud Fabric, Inc.
    RADB route object for AS8126 Cloud Fabric, Inc., maintainer MAINT-AS54574
    154.21.80.0/20
  8. Feb 16, 2026
    Route object
    AS138890 PT Acehlink Media
    ARIN route object for AS138890 PT Acehlink Media, maintainer MNT-COGC
    154.21.105.0/24
  9. Mar 5, 2026
    Route object
    AS138890 PT Acehlink Media
    RADB route object for AS138890 PT Acehlink Media, maintainer MAINT-AS4761
    154.21.105.0/24
  10. today
    Used
    Webshare
    Proxy seller
  11. today
    Used
    High Proxies
    Proxy seller
  12. today
    Used
    ProxyBonanza
    Proxy seller
  13. today
    Used
    QuarkIP
    Proxy seller
  14. today
    Used
    Bright Data
    Proxy seller
  15. today
    Used
    TorGuard
    VPN

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
PrefixOriginTypeAnonymizer addressesOperatorProxy exitsHolderRPKI
154.21.8.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.10.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.13.0/24
since Jan 2022
AS400211ISP proxyProxy providersoperated by Bright DataCogent Communications, LLC
via Port 80
154.21.14.0/24
since Jun 2020
AS174Business1Cogent Communications, LLC
154.21.15.0/24
since Aug 2026
AS272935Unknown93
12 always on
Cogent Communications, LLC
154.21.16.0/22
since Mar 2022
AS5650ISP proxyCogent Communications, LLC
via Server Destroyers LLC
154.21.20.0/23
since Dec 2023
AS174UnknownCogent Communications, LLC
154.21.22.0/23
since Aug 2026
AS149487Residential70
19 always on
Cogent Communications, LLC
154.21.22.0/24
since Aug 2026
AS149487Residential70
19 always on
Cogent Communications, LLC
154.21.24.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.26.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.31.0/24
since Jun 2021
AS174ISP proxyProxy providersoperated by High ProxiesCogent Communications, LLC
154.21.36.0/23
since Sep 2021
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.38.0/23
since Sep 2021
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.40.0/24
since Aug 2026
AS150044HostingCogent Communications, LLC
154.21.41.0/24
since Jan 2026
AS174BusinessCogent Communications, LLC
154.21.56.0/24
since May 2026
AS55066HostingCogent Communications, LLC
154.21.57.0/24
since May 2026
AS55066HostingCogent Communications, LLC
154.21.60.0/23
since Sep 2021
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.62.0/23
since Sep 2021
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.64.0/23
since Sep 2021
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.66.0/23
since Sep 2026
AS174UnknownCogent Communications, LLC
154.21.68.0/24
since Jun 2021
AS174ISP proxyProxy providersoperated by High ProxiesCogent Communications, LLC
154.21.69.0/24
since Jun 2021
AS174ISP proxyProxy providersoperated by High ProxiesCogent Communications, LLC
154.21.70.0/23
since Jul 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.80.0/24
since Dec 2023
AS906HostingCogent Communications, LLC
via DMIT Cloud Services
154.21.81.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.82.0/24
since Dec 2023
AS906HostingCogent Communications, LLC
via DMIT Cloud Services
154.21.83.0/24
since Dec 2023
AS906Hosting1Cogent Communications, LLC
via DMIT Cloud Services
154.21.84.0/24
since Dec 2023
AS906HostingCogent Communications, LLC
via DMIT Cloud Services
154.21.85.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.86.0/24
since Dec 2023
AS906Hosting1Cogent Communications, LLC
via DMIT Cloud Services
154.21.87.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.88.0/24
since Dec 2023
AS906HostingCogent Communications, LLC
via DMIT Cloud Services
154.21.89.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.90.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.91.0/24
since Dec 2023
AS906HostingCogent Communications, LLC
via DMIT Cloud Services
154.21.92.0/24
since Dec 2023
AS906Hosting1Cogent Communications, LLC
via DMIT Cloud Services
154.21.93.0/24
since Dec 2023
AS906Hosting1Cogent Communications, LLC
via DMIT Cloud Services
154.21.94.0/24
since Dec 2023
AS906Hosting2Cogent Communications, LLC
via DMIT Cloud Services
154.21.95.0/24
since Dec 2023
AS906Hosting1Cogent Communications, LLC
via DMIT Cloud Services
154.21.96.0/23
since Jul 2022
AS174ISP proxyProxy providersoperated by Webshare35
2 always on
Cogent Communications, LLC
154.21.98.0/24
since Dec 2018
AS174VPNVPN servicesoperated by TorGuardCogent Communications, LLC
154.21.100.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.101.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.102.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.103.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.106.0/24
since Sep 2021
AS174BusinessCogent Communications, LLC
154.21.107.0/24
since Jan 2024
AS399275HostingCogent Communications, LLC
via Solid Systems LLC
154.21.110.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.112.0/24
since Sep 2025
AS152491HostingCogent Communications, LLC
154.21.113.0/24
since Sep 2025
AS152491HostingCogent Communications, LLC
154.21.118.0/24
since Dec 2025
AS174UnknownCogent Communications, LLC
154.21.124.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.126.0/23
since May 2022
AS174ISP proxyProxy providersoperated by WebshareCogent Communications, LLC
154.21.128.0/22
since Oct 2022
AS396026HostingCogent Communications, LLC
154.21.132.0/22
since Dec 2020
AS174UnknownallISP proxyProxy providerssold by ProxyBonanzaCogent Communications, LLC
154.21.136.0/22
since Oct 2022
AS396026HostingCogent Communications, LLC
154.21.148.0/22
since Nov 2025
AS396026HostingCogent Communications, LLC
154.21.154.0/23
since Jul 2022
AS174ISP proxyProxy providersoperated by Webshare31
1 always on
Cogent Communications, LLC
154.21.157.0/24
since Dec 2020
AS174Unknown1Cogent Communications, LLC
154.21.158.0/23
since Sep 2026
AS174HostingCogent Communications, LLC
154.21.160.0/22
since Mar 2021
AS133527ResidentialCogent Communications, LLC
154.21.164.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.165.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.166.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.167.0/24
since Nov 4, 2026
AS211057ResidentialCogent Communications, LLC
154.21.168.0/23
since Jan 2026
AS174BusinessCogent Communications, LLC
154.21.172.0/22
since Mar 2021
AS174ISP proxyCogent Communications, LLC
154.21.192.0/21
since Jan 2025
AS174Unknown11
1 always on
Cogent Communications, LLC
154.21.194.0/24
since Sep 2025
AS979Unknown2Cogent Communications, LLC
154.21.195.0/24
since Apr 2026
AS979UnknownCogent Communications, LLC
154.21.196.0/22
since Apr 2026
AS979Unknown8
1 always on
Cogent Communications, LLC
154.21.200.0/22
since Dec 2024
AS979Unknown5
1 always on
Cogent Communications, LLC
154.21.200.0/24
since Oct 15, 2026
AS1014Residential2Cogent Communications, LLC
154.21.201.0/24
since Oct 15, 2026
AS1014Residential1Cogent Communications, LLC
154.21.202.0/24
since Oct 15, 2026
AS1014ResidentialCogent Communications, LLC
154.21.203.0/24
since Oct 15, 2026
AS1014Residential2
1 always on
Cogent Communications, LLC
154.21.204.0/22
since Jan 2025
AS174Unknown6Cogent Communications, LLC
154.21.205.0/24
since Oct 22, 2026
AS197196Hosting1Cogent Communications, LLC
154.21.208.0/23
since Sep 2026
AS397797BusinessCogent Communications, LLC
154.21.210.0/23
since Feb 2023
AS174UnknownCogent Communications, LLC
154.21.212.0/23
since Jul 2026
AS46475HostingCogent Communications, LLC
via Limestone Networks, Inc.
154.21.214.0/24
since Sep 2021
AS174UnknownCogent Communications, LLC
154.21.215.0/24
since Sep 28, 2026
AS56504HostingCogent Communications, LLC
154.21.216.0/24
since Sep 2026
AS174UnknownCogent Communications, LLC
154.21.217.0/24
since Sep 28, 2026
AS138890Unknown2Cogent Communications, LLC
154.21.218.0/23
since Mar 2023
AS174UnknownCogent Communications, LLC
154.21.224.0/21
since Oct 2022
AS396026HostingCogent Communications, LLC
154.21.232.0/23
since Jan 2024
AS174ISP proxyProxy providerssold by QuarkIPCogent Communications, LLC
154.21.234.0/23
since Sep 2026
AS154871BusinessCogent Communications, LLC
154.21.236.0/23
since Nov 2022
AS174UnknownCogent Communications, LLC
154.21.238.0/24
since Mar 2021
AS174VPNVPN servicesoperated by TorGuardCogent Communications, LLC
154.21.239.0/24
since Jan 2024
AS399275Hosting1Cogent Communications, LLC
via Solid Systems 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
154.21.0.0/1665,536COGENT-154-21-16Cogent Communications, LLC (COGC) · USDirect AllocationFeb 5, 1992abuse@cogentco.com
└ 154.21.13.0/24256PORT80-CGNT-NET-1Hosted Backbone (HBL-35) · USReallocatedNov 1, 2021eweiner@hostedbackbone.net
└ 154.21.13.0/24256PORT80-CGNT-NET-1Port 80 (PISL-23) · USReallocatedNov 8, 2023eweiner@hostedbackbone.net
└ 154.21.16.0/221,024NET-154-21-16-0Server Destroyers LLC (SDL-157) · USReallocatedMar 22, 2022serverdestroyers@gmail.com
└ 154.21.32.0/221,024NET-154-21-32-0-1High Proxies - HPRO Group Limited (C08849298)ReassignedAug 29, 2022abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.66.0/23512NET-154-21-66-0-1Delta Centric LLC (C07430599) · USReassignedSep 23, 2019abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.71.0/24256NET-154-21-71-0-1Ping Technology Labs LTD (C07695866) · GBReassignedNov 27, 2020abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.80.0/204,096DMIT-CGNT-NET-6DMIT Cloud Services (DMITI) · USReallocatedAug 2, 2023abuse@dmit.com
└ 154.21.80.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.81.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.82.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.83.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.84.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.85.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.86.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.87.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.88.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.89.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.90.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.91.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.92.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.93.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.94.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.95.0/24256DMIT-CUSTOMER-US-CA-90017unknownReassignedJan 29, 2026abuse@dmit.com
via DMIT-CGNT-NET-6
└ 154.21.96.0/24256NET-154-21-96-0-1Ping Technology Labs LTD (C07695864) · GBReassignedNov 27, 2020abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.97.0/24256NET-154-21-97-0-1Ping Technology Labs LTD (C07695863) · GBReassignedNov 27, 2020abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.98.0/23512NET-154-21-98-0-1VPNetworks LLC (C07261601) · NLReassignedDec 12, 2018abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.107.0/24256SOLIDSYS-CGNT-NET-7Solid Systems LLC (SSL-1126) · USReallocatedJan 11, 2024abuse@solidsystems.us
└ 154.21.107.0/24256SOLID-DALLASSolid Dallas (C10638570) · USReassignedJan 14, 2024abuse@solidsystems.us
via SOLIDSYS-CGNT-NET-7
└ 154.21.110.0/24256NET-154-21-110-0-1Ping Technology Labs LTD (C07695861) · GBReassignedNov 27, 2020abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.144.0/25128NET-154-21-144-0-1unknown———
└ 154.21.208.0/23512MARSHALL-FIBERNET-CGNT-NET-2City of Marshall (CM-1544) · USReassignedSep 17, 2026—
└ 154.21.212.0/23512LIMESTONE-NETWORKS-CGNT-NET-38Limestone Networks, Inc. (LIMES-2) · USReallocatedJul 17, 2026abuse@limestonenetworks.com
└ 154.21.214.0/23512NET-154-21-214-0-1Great King Electric Co, LTD. (C07507266) · GBReassignedFeb 19, 2020abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.218.0/23512NET-154-21-218-0-1GuangZhou Zike Network Technology Co Ltd (C09386802) · FRReassignedApr 19, 2023abuse@cogentco.com
via COGENT-154-21-16
└ 154.21.239.0/24256SOLIDSYS-CGNT-NET-8Solid Systems LLC (SSL-1126) · USReallocatedJan 11, 2024abuse@solidsystems.us
└ 154.21.239.0/24256SOLID-LOS-ANGELESSolid la (C10638571) · USReassignedJan 14, 2024abuse@solidsystems.us
via SOLIDSYS-CGNT-NET-8

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

65,536 addresses
TypeAddressesShareRanges
Internet provider25,08838%17
ISP proxyanonymizer13,31220%31
Hosting12,54419%31
Unknown6,91211%17
Residential4,6087.0%15
Business2,3043.5%6
VPNanonymizer7681.2%3

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