38.0.0.0/8

AS174 · Cogent Communications, LLC

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Summary

Country	United States
Domain	cogentco.com
ASN	AS174
Registry	ARIN
ID	COGENT-A

WHOIS Details

NetHandle:      NET-38-0-0-0-1
OrgID:          COGC
Parent:         
NetName:        COGENT-A
NetRange:       38.0.0.0 - 38.255.255.255
NetType:        allocation
RegDate:        1991-04-16
Updated:        2025-09-23
Source:         ARIN


OrgID:          COGC
OrgName:        Cogent Communications, LLC
CanAllocate:    
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
RegDate:        2000-05-30
Updated:        2025-09-23
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgAdminHandle: IPALL-ARIN
OrgTechHandle:  IPALL-ARIN
OrgAbuseHandle: COGEN-ARIN
OrgNOCHandle:   ZC108-ARIN
Source:         ARIN


POCHandle:      COGEN-ARIN
IsRole:         Y
LastName:       Cogent Abuse
FirstName:      
Street:         2450 N street, NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2002-11-13
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        abuse@cogentco.com
Source:         ARIN


POCHandle:      IPALL-ARIN
IsRole:         Y
LastName:       IP Allocation
FirstName:      
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2002-11-13
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        ipalloc@cogentco.com
Source:         ARIN


POCHandle:      ZC108-ARIN
IsRole:         Y
LastName:       Cogent Communications
FirstName:      
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2001-01-24
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        noc@cogentco.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 38.0.0.0/8

Range	ASN	Company	Num of IPs
38.246.191.0/24	AS174	JunYun Limited	256
38.111.223.0/24	AS1008	GANJINGWORLD CORPORATION	256
38.246.126.0/24	AS1008	Ganjingworld Corporation	256
38.246.81.0/24	AS1008	Ganjingworld Corporation	256
38.69.152.0/24	AS10099	China Unicom (Hong Kong) Operations Limited	256
38.111.220.0/24	AS10111	Zeofast Network / Flarespeed Technology Co Ltd	256
38.111.221.0/24	AS10111	Zeofast Network / Flarespeed Technology Co Ltd	256
38.124.249.0/24	AS10886	University of Maryland/Mid-Atlantic Crossroads (MAX)	256
38.99.168.0/24	AS1100	Ravand CyberTech Inc	256
38.117.75.0/24	AS11077	XBASE Technologies Corp.	256
38.69.130.0/24	AS11077	XBASE Technologies Corp.	256
38.92.53.0/24	AS11085	NCS Technologies	256
38.105.33.0/24	AS11088	IConnect Inc.	256
38.64.74.0/24	AS11160	COSTAR GROUP INC	256
38.115.1.0/24	AS11361	Boscov's Department Store LLC	256
38.211.38.0/24	AS11432	Telium Telecomunicações Ltda	256
38.52.204.0/24	AS11432	Telium Telecomunicações Ltda	256
38.105.7.0/24	AS11457	Digital Realty Trust	256
38.71.70.0/24	AS11586	Johnson Outdoors Inc.	256
38.99.129.0/24	AS11636	MServices Limited Partnership	256
38.29.170.0/24	AS11686	Education Networks of America	256
38.27.118.0/24	AS11713	Congruity	256
38.79.75.0/24	AS11775	Clougix	256
38.105.166.0/24	AS11903	Lincolnshire Management Inc	256
38.111.11.0/24	AS174	HEI Cambridge, LLC d/b/a Le Meridien Cambridge	256
38.111.113.0/24	AS174	Ventum Financial Corp.	256
38.111.115.0/24	AS174	Bells & Whistles Communications, Inc.	256
38.111.14.0/24	AS174	Cogent Communications - IPENG	256
38.111.149.0/24	AS174	The Presidio Trust	256
38.111.157.0/24	AS174	California Nurses Association	256
38.111.16.0/24	AS174	Massachusetts Convention Center Authority	256
38.111.161.0/24	AS174	Surge Staffing	256
38.111.163.0/24	AS174	SelectUS Consulting	256
38.111.17.0/24	AS174	Cogent Communications - IPENG	256
38.111.18.0/24	AS174	Guang Xun Yong Yao Limited	256
38.111.181.0/24	AS174	Porter Wright Morris & Arthur LLP	256
38.111.192.0/24	AS174	OpsRamp Inc	256
38.111.193.0/24	AS174	Cogent communications - IPENG	256
38.111.195.0/24	AS174	Altair Engineering, Inc	256
38.111.197.0/24	AS174	Security Centric	256
38.111.206.0/24	AS174	SlashNext, Inc.	256
38.111.207.0/24	AS174	City of Long Beach, Harbor Department	256
38.111.219.0/24	AS174	KAOPU CLOUD HK LIMITED	256
38.111.248.0/24	AS174	1547 CSR-South Bend, LLC	256
38.111.252.0/24	AS174	enFocus	256
38.111.56.0/24	AS174	Cisco Systems Inc	256
38.111.61.0/24	AS174	Guang Xun Yong Yao Limited	256
38.111.96.0/24	AS174	Bells & Whistles Communications, Inc.	256
38.111.98.0/24	AS174	Teranet Inc.	256
38.112.60.0/24	AS174	J2 Lab	256

Hosted domains

There are 4,945,421 domain names hosted across 838,169 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
38.64.166.13	laredorealestatehomes.com	2098
38.88.82.220	focuslinkglobal.com	2053
38.45.18.203	ipp-dofrecords.com	1431
38.70.16.72	edhelper.com	1027
38.88.82.216	flatearth101.com	847
38.88.82.214	harmonynhymns.com	789
38.88.82.62	hobbizine.com	784
38.88.82.217	hudsonvalleyfluteensemble.org	739
38.190.187.101	helpme.com.ve	733
38.88.82.218	sunnionlineradio.com	715
38.88.82.215	gngpublications.com	678
38.40.244.238	zolsky.net	614
38.88.82.58	yesterwhy.com	587
38.63.68.228	smnuoh.bond	567
38.88.82.223	elvispresleyrapist.com	534
38.88.82.224	cssgroups.in	530
38.134.148.18	jiatingyaoxiang.com	527
38.47.222.160	juueoy.cfd	514
38.63.50.90	xzsfjsh.cn	486
38.61.9.13	lvnaipj.com	473

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

2,519,971 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
38.91.51.1	AS398371 OCBA	`2.08ms` from Ashburn, US
38.90.33.101	AS174 Cogent Communications, LLC	`0.37ms` from Chicago, US
38.89.226.2	AS174 Cogent Communications, LLC	`0.85ms` from Chicago, US
38.92.27.104	AS26042 FiberState, LLC	`0.15ms` from Los Angeles, US
38.91.107.52	AS63023 GTHost	`0.07ms` from Miami, US
38.92.37.161	AS136744 DREAM POWER TECHNOLOGY LIMITED	`219.85ms` from Ashburn, US
38.91.44.2	AS174 Cogent Communications, LLC	`0.20ms` from Ashburn, US
38.92.35.1	AS398371 OCBA	`2.03ms` from Ashburn, US
38.90.162.192	AS174 Cogent Communications, LLC	`0.54ms` from Chicago, US
38.89.250.34	AS174 Cogent Communications, LLC	`0.85ms` from Chicago, US
38.89.230.227	AS174 Cogent Communications, LLC	`0.47ms` from Chicago, US
38.91.119.2	AS9294 GNET INC.	`0.88ms` from Hong Kong, HK
38.91.103.11	AS174 Cogent Communications, LLC	`0.48ms` from Los Angeles, US
38.92.13.1	AS174 Cogent Communications, LLC	`0.48ms` from Los Angeles, US
38.92.43.223	AS394957 Zadara Storage, Inc.	`0.18ms` from San Jose, US
38.90.24.254	AS23114 Critical Hub Networks	`0.61ms` from San Juan, PR
38.91.37.1	AS398409 EyeCare Services Partners Management LLC	`0.42ms` from Ashburn, US
38.91.58.209	AS32181 GigeNET	`0.18ms` from Chicago, US
38.91.120.177	AS33313 Crown Castle Fiber LLC	`0.41ms` from Los Angeles, US
38.91.99.1	AS38880 Micron21 Datacentre Pty Ltd	`0.98ms` from Melbourne, AU
38.89.129.133	AS394034 Brooklyn Fiber	`0.59ms` from New York City, US
38.91.100.35	AS63023 GTHost	`0.10ms` from New York City, US
38.90.141.86	AS174 Cogent Communications, LLC	`0.51ms` from Ashburn, US
38.91.46.91	AS397423 Tier.Net Technologies LLC	`0.15ms` from Ashburn, US
38.89.251.2	AS174 Cogent Communications, LLC	`0.77ms` from Chicago, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
67.149.179.56	AS12083 WideOpenWest Finance LLC	`16.07ms` from Atlanta, US
203.114.71.88	AS38794 UIH	`0.71ms` from Bangkok, TH
202.44.11.184	AS9551 King Mongkut's University of Technology	`2.60ms` from Bangkok, TH
34.45.38.24	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
34.70.239.168	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
84.166.113.168	AS3320 Deutsche Telekom AG	`3.58ms` from Hamburg, DE
85.195.200.136	AS13030 Init7 (Switzerland) Ltd.	`0.75ms` from Lausanne, CH
203.46.57.120	AS1221 Telstra Limited	`1.20ms` from Melbourne, AU
20.217.33.136	AS8075 Microsoft Corporation	`0.16ms` from Modiin Ilit, IL
157.240.244.200	AS32934 Facebook, Inc.	`0.84ms` from Monterrey, MX
159.108.74.40	AS2024 Eversource Energy	`4.75ms` from New York City, US
44.201.132.184	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
190.20.48.168	AS7418 TELEFÓNICA CHILE S.A.	`1.94ms` from Santiago, CL
27.234.132.168	AS4766 Korea Telecom	`1.93ms` from Seoul, KR
113.33.23.232	AS17506 ARTERIA Networks Corporation	`2.04ms` from Tokyo, JP
154.242.247.8	AS36947 Telecom Algeria	`13.91ms` from Valencia, ES
87.195.183.56	AS12414 Solcon Internetdiensten B.V.	`6.07ms` from Amsterdam, NL
79.120.194.168	AS12301 Invitech ICT Services Kft.	`0.52ms` from Budapest, HU
197.58.123.88	AS8452 TE-AS	`5.16ms` from Cairo, EG
102.42.22.40	AS8452 TE-AS	`15.86ms` from Cairo, EG
93.235.125.168	AS3320 Deutsche Telekom AG	`5.29ms` from Frankfurt am Main, DE
18.161.50.232	AS16509 Amazon.com, Inc.	`1.14ms` from Jakarta, ID
113.225.90.168	AS4837 CHINA UNICOM China169 Backbone	`10.59ms` from Liaoyang, CN
3.7.171.40	AS16509 Amazon.com, Inc.	`0.11ms` from Mumbai, IN
85.167.102.232	AS2119 Telenor Norge AS	`5.32ms` from Oslo, NO

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f7 -m10 38.186.130.38

traceroute to 38.186.130.38 (38.186.130.38): 10 hops max, 52 byte packets

7 [AS174] 154.54.92.106 1.206 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Dallas, US

On November 14th 2025

What are IP address ranges?

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Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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