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Data as of Nov 4, 2026

217.71.112.0/20

No anonymizer space · no proxy exits in 30 days

Cogent Communications, LLC · space held by Cogent Communications Group LLC

Announcement
this exact prefix
No RPKI
Announced by
AS174
Type
Internet provider
63% of it

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

PrefixOriginTypeHolderRPKI
217.71.113.0/24
since Jul 2026
AS174Internet providerCogent Communications Group LLC
217.71.114.0/24
since May 2024
AS47600HostingCogent Communications Group LLC
217.71.116.0/24
since Oct 2025
AS8434MobileCogent Communications Group LLC
217.71.119.0/24
since Oct 2025
AS8434MobileCogent Communications Group LLC
217.71.120.0/24
since Jul 2024
AS204805UnknownCogent Communications Group LLC
217.71.122.0/24
since Feb 2025
AS47600HostingCogent Communications Group LLC
217.71.124.0/22
since Apr 2022
AS198545Internet providerCogent Communications Group LLC
217.71.124.0/24
since Dec 2023
AS198545Internet providerCogent Communications Group LLC
217.71.125.0/24
since Dec 2023
AS198545Internet providerCogent Communications Group LLC
217.71.126.0/24
since Apr 2024
AS198545Internet providerCogent Communications Group LLC
217.71.127.0/24
since Sep 2024
AS198545Internet providerCogent Communications Group 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
217.71.112.0/204,096US-COGENT-20020513Cogent Communications Group LLC (ORG-GATI1-RIPE) · USALLOCATED PASep 10, 2004abuse@cogentco.com
└ 217.71.112.64/2664CYRES-COGENTGroupe CyresASSIGNED PAFeb 28, 2006abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.112.128/2664XEROX-GLOBAL-SERVICES-1-3-MITTERRANDXerox Global ServicesASSIGNED PAAug 8, 2006abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.114.0/24256RUBIX-CGNT-NET-1unknownASSIGNED PAMay 23, 2024abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.115.160/2732SOS-COGENTSOS DataASSIGNED PASep 1, 2010abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.116.0/24256TELAVOX-CGNT-NET-1unknownASSIGNED PAJun 24, 2024abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.118.0/2664CYRES-COGENTGroupe CyresASSIGNED PASep 4, 2007abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.119.0/24256TELAVOX-CGNT-NET-2unknownASSIGNED PAJun 24, 2024abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.121.0/2664IEBSIEBS sprlASSIGNED PADec 3, 2002abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.121.128/25128WEBAXYSWebaxysASSIGNED PAAug 31, 2006abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.122.0/24256RUBIX-DATACENTER-CGNT-NET-2Rubix DatacenterASSIGNED PADec 16, 2025abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.123.64/2664FR-CEICOM-COGENTCeicomASSIGNED PAMar 21, 2008abuse@cogentco.com
via US-COGENT-20020513
└ 217.71.124.0/221,024FlexNetwork-COGENT-6Flex NetworkASSIGNED PAApr 14, 2022abuse@cogentco.com
via US-COGENT-20020513

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

4,096 addresses
TypeAddressesShareRanges
Internet provider2,56063%11
Hosting51213%2
Mobile51213%2
Business2566.3%3
Unknown2566.3%1

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