ASN Lookup Tool

Cogent Communications, LLC cogentco.com US US 4680 Routes

AS Data

AS174

AS174 – Cogent Communications, LLC

AS Number 174
AS Name COGENT-174
Organization Cogent Communications, LLC (cogc)
Country US
Website cogentco.com
Number of IPv4 Routes 4159
Number of IPv6 Routes 521
ASN type ISP
Registry ARIN
Date Allocated 1996-05-16

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IP Ranges

Route # IPs
154.22.4.0/24 256
217.151.240.0/20 4096
149.119.184.0/24 256
149.13.8.0/21 2048
2001:550:6001::/48 ~1×10²⁴
2001:550:1:100::/56 ~5×10²¹
38.129.72.0/21 2048
63.166.32.0/20 4096
66.251.129.0/24 256
131.143.42.0/24 256
38.106.120.0/22 1024
38.226.201.0/24 256
38.108.164.0/24 256
104.234.162.0/23 512
38.22.10.0/24 256
2001:550:a06::/48 ~1×10²⁴
195.13.60.0/24 256
154.13.204.0/23 512
149.13.121.0/24 256
38.64.162.0/24 256
154.18.0.0/15 131072
38.64.87.0/24 256
172.83.80.0/24 256
192.26.51.0/24 256
2001:550:2a01::/48 ~1×10²⁴
64.204.99.0/24 256
65.166.254.0/23 512
38.183.124.0/24 256
38.95.106.0/23 512
38.106.194.0/24 256
38.107.96.0/24 256
66.7.92.0/24 256
205.198.91.0/24 256
38.78.137.0/24 256
38.100.4.0/24 256
38.27.111.0/24 256
149.102.58.0/24 256
38.177.46.0/24 256
80.66.128.0/20 4096
154.61.93.0/24 256
154.61.136.0/24 256
38.183.125.0/24 256
2001:550:5c05::/48 ~1×10²⁴
206.183.224.0/19 8192
66.7.93.0/24 256
149.102.57.0/24 256
154.18.153.0/24 256
154.3.176.0/21 2048
149.13.127.0/24 256
38.98.168.0/22 1024
38.113.116.0/23 512
149.13.117.0/24 256
195.13.61.0/24 256
38.70.224.0/21 2048
2001:550:1607::/48 ~1×10²⁴
154.7.152.0/21 2048
191.96.168.0/24 256
2001:550:7711::/48 ~1×10²⁴
38.134.122.0/24 256
199.101.171.0/24 256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       174
ASName:         COGENT-174
ASHandle:       AS174
RegDate:        1996-05-16
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/autnum/174



OrgName:        Cogent Communications, LLC
OrgId:          COGC
Address:        2450 N Street NW
City:           Washington
StateProv:      DC
PostalCode:     20037
Country:        US
RegDate:        2000-05-30
Updated:        2025-09-23
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:            https://rdap.arin.net/registry/entity/COGC

ReferralServer:  rwhois://rwhois.cogentco.com:4321

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  abuse@cogentco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311 
OrgNOCEmail:  noc@cogentco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311 
OrgTechEmail:  ipalloc@cogentco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number Description Country
AS33069 BCI US
AS18734 Operbes, S.A. de C.V. MX
AS22687 L3 NETWORKS INC US
AS204528 Space Communication ltd. IL
AS199645 integrate it Netzwerke GmbH DE
AS3132 Red Cientifica Peruana PE
AS394459 QUANTA SERVICES INC US
AS39634 Via.io SARL FR
AS197415 CROSSCOMM R SARL LU
AS268729 Wnett Fibra BR
AS20652 Unitron Systems & Development LTD GB
AS208354 Alfa.Bit.Omega S.R.L. IT
AS40255 Brigade Capital Management, LP US
AS27715 Locaweb Serviços de Internet S/A BR
AS1443 CooperVision, Inc. US
AS215691 AP INTERACTIVE SOLUTIONS SL ES
AS200062 Optitrust GmbH DE
AS25841 Fusionapps, LLC. US
AS399337 Netcrawler Inc CA
AS31632 OAG Aviation WorldWide Limited GB
AS27281 Quantcast Corporation US
AS210123 NUBBITEL TELECOM,S.L. ES
AS396117 Orange County Fire Authority US
AS29838 Atlantic Metro Communications II, Inc. US
AS19753 IANA - Autonomous System Number US
AS209265 INFINITY LOOP SLU AD
AS50923 Metroset Ltd. RU
AS327727 C-Squared Limited UG
AS400696 MIBURA, INC. US
AS32787 Akamai Technologies, Inc. US
AS52341 WOM S.A. CL
AS39884 iNet Telecoms Ltd GB
AS12741 Netia SA PL
AS202626 Perfect-net Jaroslaw Dziubek PL
AS14695 City of El Reno US
AS394187 IANA - Autonomous System Number US
AS394132 Cascade Microtech, Inc. US
AS27640 GIGAS HOSTING USA, LLC US
AS40440 NRTC Communications CA
AS63100 Carnegie Telephone Company, Inc. US
AS92 Clarkson University US
AS7992 Cogeco Connexion Inc. CA
AS397290 Honda Federal Credit Union US
AS396002 TeleVoIPs US
AS16622 Novarad Corporation US
AS273245 TERAMEG SA DE CV MX
AS36436 Infobunker, L.L.C. US
AS270189 T-line Mexico S.A. de C.V. MX
AS204427 Timeweb, LLP KZ
AS214438 NexGen Cloud Ltd GB
AS15372 IBH connect GmbH DE
AS63362 Smule Inc. US
AS40784 hiQ Data Corporation US
AS21826 Corporación Telemic C.A. VE
AS213483 ASTRIVE X LTD IE
AS205119 TELEKS DOOEL Skopje MK
AS205996 Interfiber Ltd GB
AS39384 Dream Fusion - IT Services, Lda PT
AS7065 Sonic.net, LLC US
AS46632 Southwest Arkansas Telephone Cooperative US

Upstreams

AS Number Description Country
AS5511 Orange S.A. FR
AS31727 Node4 Limited GB
AS286 GTT Communications Inc. US
AS2611 BELNET BE
AS15943 wilhelm.tel GmbH DE
AS37468 Angola Cables AO
AS2497 Internet Initiative Japan Inc. JP
AS36926 celtel Kenya Ltd KE
AS206652 Ioannis Roditis trading as Greekstream Networks GR
AS3303 Swisscom Schweiz AG CH
AS50673 Serverius Holding B.V. NL
AS25512 CD Telematika a.s. CZ
AS10099 China Unicom Hong Kong Operations Limited HK
AS58453 China Mobile International Limited HK
AS51765 Oy Crea Nova Hosting Solution Ltd FI
AS47160 MOJI SAS FR
AS197589 Alfanews S.r.l. IT
AS12186 GVVME US
AS136897 Enjoyvc Cloud Group Limited. HK
AS39305 Groupe convergence.com SAS FR
AS273478 Sage Networks BR
AS9930 TT DOTCOM SDN BHD MY
AS1836 green.ch AG CH
AS15412 Global Cloud Xchange GB
AS132167 Nine Communications Company Limited MM
AS1299 Arelion Sweden AB SE
AS19009 Missouri Network Alliance, LLC US
AS49453 Global Layer B.V. NL
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd RS
AS6453 TATA COMMUNICATIONS AMERICA INC US
AS41720 REVOLUTION PROVIDER SRL IT
AS52663 Turbo BSB Tecnologias em Rede Ltda. BR
AS18041 Taiwan Digital Streaming Co. TW
AS32621 Twin City VoIP, Inc. US
AS152672 Aiyun HK Network HK
AS2711 Spirit Communications US
AS37100 SEACOM Limited MU
AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL ES
AS64126 DOMINICAN TELECOM PRIME, DTP, S.R.L. DO
AS26744 Planters Communications, LLC US
AS50107 Vista Technology LLP KZ
AS38193 TRANS WORLD ASSOCIATES PVT LIMITED PK
AS215596 KISSGROUP SAS FR
AS40460 WeConnect US
AS41327 Fiber Telecom S.p.A. IT
AS205504 Skylink Networking Ltd EE
AS197816 Etix Everywhere Ouest SAS FR
AS13786 Seabras 1 USA, LLC US
AS6327 Shaw Communications CA
AS19523 FlexNetworks CA
AS9498 Bharti Airtel Limited IN
AS6204 ZET.NET IP Transit RO
AS6830 Liberty Global Europe Holding B.V. NL
AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY ETISALAT GROUP PJSC AE
AS30972 Bedrock SAS FR
AS58299 Openfactory GmbH CH
AS6758 Monaco Telecom S.A. MC
AS49121 Infinity Telecom, s.r.o. CZ
AS202984 TEAM HOST AS RU RU
AS132825 MYTEK TRADING PTY LTD AU

Downstreams

AS Number Description Country
AS33069 BCI US
AS18734 Operbes, S.A. de C.V. MX
AS22687 L3 NETWORKS INC US
AS204528 Space Communication ltd. IL
AS199645 integrate it Netzwerke GmbH DE
AS3132 Red Cientifica Peruana PE
AS394459 QUANTA SERVICES INC US
AS39634 Via.io SARL FR
AS197415 CROSSCOMM R SARL LU
AS268729 Wnett Fibra BR

Contacts

Email Contacts

ipalloc@cogentco.com

Abuse Contacts

abuse@cogentco.com

Legacy Routes

38.130.139.0/24 65.163.164.0/24 38.204.0.0/22 38.90.142.0/24 154.44.9.0/24 38.203.0.0/22 38.124.108.0/23 154.51.246.0/24 206.84.0.0/20 38.130.88.0/22 38.9.215.0/24 38.3.177.0/24 38.87.58.0/24 38.224.226.0/24 209.14.139.0/24 38.94.32.0/24 154.44.4.0/24 38.101.24.0/22 149.34.32.0/24 38.124.68.0/22 130.117.5.0/24 38.43.78.0/24 38.130.140.0/24 154.19.47.0/24 205.164.240.0/24 38.124.60.0/23 206.62.192.0/19 204.217.233.0/24 38.67.19.0/24 38.130.138.0/24 38.255.31.0/24 38.100.105.0/24 38.3.176.0/24 5.22.204.0/22 38.130.68.0/22 38.124.110.0/23 154.59.106.0/23 154.43.165.0/24 154.49.140.0/24 204.157.76.0/24 38.71.19.0/24 38.91.40.0/24 38.126.229.0/24 38.124.72.0/22 154.61.150.0/24 38.111.17.0/24 38.133.145.0/24 38.135.186.0/24 154.18.157.0/24 38.130.80.0/22 38.210.13.0/24 154.56.215.0/24 38.127.93.0/24 206.84.2.0/24 38.7.99.0/24 130.117.183.0/24 199.29.143.0/24 154.56.130.0/24 38.121.52.0/24 38.190.128.0/22 2001:550:2004::/48 38.83.40.0/24 154.3.78.0/23 38.147.73.0/24 38.76.67.0/24 38.250.248.0/22 38.65.28.0/24 38.43.82.0/23 38.225.91.0/24 199.16.106.0/24 38.22.219.0/24 38.89.68.0/24 38.3.227.0/24 38.135.177.0/24

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Frequently Asked Questions

ASN AS174 is an Autonomous System Number used to identify a network for BGP internet routing.
AS174 is listed under Cogent Communications, LLC.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.