ASN Lookup Tool

Cogent Communications, LLC cogentco.com US US 4777 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 4089
Number of IPv6 Routes 534
ASN type ISP
Registry ARIN
Date Allocated 1996-05-16

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IP Ranges

Route # IPs
217.151.240.0/20 4096
38.93.97.0/24 256
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
66.251.129.0/24 256
131.143.42.0/24 256
38.106.120.0/22 1024
38.70.14.0/23 512
38.226.201.0/24 256
38.22.10.0/24 256
2001:550:a06::/48 ~1×10²⁴
195.13.60.0/24 256
38.253.93.0/24 256
154.13.204.0/23 512
149.13.121.0/24 256
38.64.162.0/24 256
205.215.0.0/18 16384
149.127.8.0/24 256
38.236.135.0/24 256
38.213.142.0/24 256
38.10.160.0/24 256
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
38.253.94.0/24 256
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
154.49.68.0/24 256
38.100.4.0/24 256
38.236.134.0/24 256
149.102.58.0/24 256
38.89.99.0/24 256
80.66.128.0/20 4096
154.61.93.0/24 256
154.61.136.0/24 256
38.183.125.0/24 256
192.84.85.0/24 256
2001:550:5c05::/48 ~1×10²⁴
206.183.224.0/19 8192
66.7.93.0/24 256
208.15.226.0/24 256
149.102.57.0/24 256
154.18.153.0/24 256
154.21.158.0/23 512
154.3.176.0/21 2048
149.13.127.0/24 256
38.98.168.0/22 1024
38.213.141.0/24 256
38.113.116.0/23 512
149.13.117.0/24 256

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

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

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  abuse@cogentco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-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
AS1088 Greenlight Networks, LLC US
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
AS20652 Unitron Systems & Development LTD GB
AS208354 Alfa.Bit.Omega S.R.L. IT
AS40255 Brigade Capital Management, LP US
AS10996 Concorde inc. CA
AS27715 Locaweb Serviços de Internet S/A BR
AS1443 CooperVision, Inc. US
AS200062 Optitrust GmbH DE
AS215691 AP INTERACTIVE SOLUTIONS SL ES
AS25841 Fusionapps, LLC. US
AS399337 Netcrawler Inc CA
AS31632 OAG Aviation WorldWide Limited GB
AS27281 Quantcast Corporation US
AS210123 NUBBITEL TELECOM,S.L. ES
AS29838 Atlantic Metro Communications II, Inc. US
AS396117 Orange County Fire Authority US
AS209265 INFINITY LOOP SLU AD
AS50923 Metroset Ltd. RU
AS400696 MIBURA, INC. US
AS32787 Akamai Technologies, Inc. US
AS39884 iNet Telecoms Ltd GB
AS12741 Netia SA PL
AS14695 City of El Reno 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
AS396031 1923327 ONTARIO INC CA
AS16622 Novarad Corporation US
AS273245 TERAMEG SA DE CV MX
AS36436 Infobunker, L.L.C. US
AS204427 Timeweb, LLP KZ
AS214438 NexGen Cloud Ltd GB
AS15372 IBH connect GmbH DE
AS63362 Smule Inc. US
AS32806 MTNSAT Holdings LLC 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
AS46632 Southwest Arkansas Telephone Cooperative US
AS7065 Sonic.net, LLC US
AS33920 aq networks limited GB
AS9957 KINX KR
AS393618 Vision Concept Technology, LLC US
AS273298 JUAN FRANCISCO RAMIREZ CERVANTES MX
AS33811 Digitas GmbH DE

Upstreams

AS Number Description Country
AS206201 Devantis SA CH
AS5511 Orange S.A. FR
AS6762 TELECOM ITALIA SPARKLE S.p.A. IT
AS31727 Node4 Limited GB
AS20326 TeraSwitch Networks Inc. US
AS29608 Ovea SAS FR
AS200000 Hosting Ukraine LTD UA
AS286 GTT Communications Inc. US
AS13977 Fidium US
AS327727 C Squared Limited UG
AS23520 Columbus Networks USA, Inc. US
AS2611 BELNET BE
AS4230 CLARO S.A. BR
AS18046 DongFong Technology Co. Ltd. TW
AS37468 Angola Cables AO
AS8285 Versija SIA LV
AS2497 Internet Initiative Japan Inc. JP
AS59865 Ivent Mobile bv NL
AS206652 Ioannis Roditis trading as Greekstream Networks GR
AS3303 Swisscom Schweiz AG CH
AS37497 Network Platforms PTY LTD ZA
AS50673 Serverius Holding B.V. NL
AS30990 DJIBOUTI TELECOM S.A. DJ
AS6461 Zayo Bandwidth US
AS10099 China Unicom Hong Kong Operations Limited HK
AS58453 China Mobile International Limited HK
AS31564 Hexaglobe SAS FR
AS14840 BR.Digital Telecom BR
AS36947 Telecom Algeria DZ
AS12186 GVVME US
AS35346 SC ITNS.NET SRL MD
AS28394 Bicentel SA de CV MX
AS45250 Vocom International Telecommunication Inc. US
AS136897 Enjoyvc Cloud Group Limited. HK
AS13249 IT Systems LLC UA
AS9930 TT DOTCOM SDN BHD MY
AS51248 Host Telecom.com s.r.o. CZ
AS1836 green.ch AG CH
AS12620 Ticinocom SA CH
AS15412 Global Cloud Xchange GB
AS214043 Christian Barba trading as Cloudfira ES
AS1299 Arelion Sweden AB SE
AS3257 GTT Communications Inc. US
AS19009 Missouri Network Alliance, LLC US
AS62000 SERVERD SAS FR
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd RS
AS6453 TATA COMMUNICATIONS AMERICA INC US
AS200019 ALEXHOST S.R.L. MD
AS7713 Telekomunikasi Indonesia PT ID
AS52663 Turbo BSB Tecnologias em Rede Ltda. BR
AS2516 KDDI CORPORATION JP
AS15612 ServeCentric Ltd. IE
AS152672 Aiyun HK Network HK
AS34177 Celeste SAS FR
AS11758 IRIS Networks US
AS11019 HAProxy Technologies, Inc. US
AS2711 Spirit Communications US
AS52025 ParadoxNetworks Limited GB
AS3491 PCCW Global HK Limited HK
AS23764 China Telecom Global Limited HK

Downstreams

AS Number Description Country
AS1088 Greenlight Networks, LLC US
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

Contacts

Email Contacts

ipalloc@cogentco.com

Abuse Contacts

abuse@cogentco.com

Legacy Routes

154.30.154.0/24 65.174.252.0/24 154.44.9.0/24 38.147.219.0/24 154.58.230.0/24 38.130.88.0/22 38.226.5.0/24 38.131.154.0/24 38.188.238.0/24 38.246.247.0/24 154.58.231.0/24 104.234.12.0/24 38.46.235.0/24 38.188.107.0/24 163.223.216.0/24 130.117.5.0/24 38.124.60.0/23 109.66.32.0/22 38.67.19.0/24 38.226.118.0/23 38.225.206.0/24 38.188.239.0/24 38.46.233.0/24 38.147.194.0/24 38.91.40.0/24 38.124.72.0/22 91.123.76.0/22 38.133.145.0/24 38.135.186.0/24 38.71.194.0/24 154.18.157.0/24 38.130.80.0/22 95.170.22.0/24 38.225.204.0/24 154.56.215.0/24 38.131.151.0/24 38.188.80.0/24 38.147.195.0/24 38.19.211.0/24 154.56.130.0/24 38.145.124.0/23 38.46.234.0/24 38.147.73.0/24 38.188.106.0/24 38.76.67.0/24 38.250.248.0/22 38.236.128.0/19 38.65.28.0/24 38.225.91.0/24 38.188.235.0/24 38.128.112.0/24 199.16.106.0/24 194.0.177.0/24 38.188.232.0/24 154.44.5.0/24 38.188.83.0/24 38.124.108.0/23 38.41.187.0/24 38.188.233.0/24 38.94.32.0/24 38.51.239.0/24 154.44.4.0/24 38.101.24.0/22 38.124.68.0/22 38.191.164.0/24 38.188.234.0/24 38.128.113.0/24 38.128.116.0/24 205.164.240.0/24 38.125.235.0/24 38.51.237.0/24 38.211.47.0/24 38.100.105.0/24 38.19.208.0/24 38.130.68.0/22 38.124.110.0/23 154.59.106.0/23 38.188.82.0/24 38.19.210.0/24 38.252.206.0/24 38.188.105.0/24 38.225.205.0/24 38.71.19.0/24 38.188.236.0/24 154.56.131.0/24 38.126.229.0/24 38.128.117.0/24 38.72.159.0/24 38.51.236.0/24 38.188.104.0/22 38.127.93.0/24 38.19.209.0/24 38.105.3.0/24 38.188.104.0/24 38.147.196.0/24 38.191.165.0/24 38.46.232.0/24 38.226.119.0/24 38.188.81.0/24 154.62.128.0/24 38.147.205.0/24 38.22.219.0/24 38.89.68.0/24

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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.