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:      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


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

Overlapping Ranges

BGP prefixes that are contained by 38.0.0.0/8

Range	ASN	Company	Num of IPs
38.107.238.0/24	AS49791	TOO Tol'ko litsenzionnyye produkty (191040025262)	256
38.180.158.0/24	AS58061	3NT SOLUTIONS LLP	256
38.107.86.0/24	AS58553	PT Kita Bintang Tujuh	256
38.226.124.0/24	AS58370	Jastel Network Company	256
38.180.114.0/24	AS58061	3NT SOLUTIONS LLP	256
38.180.195.0/24	AS9009	3NT SOLUTIONS LLP	256
38.253.72.0/24	AS400699	KitsapWiFi	256
38.96.71.0/24	AS400810	Limestone Networks, Inc.	256
38.100.105.0/24	AS400810	BreezeHost	256
38.100.105.0/24	AS400810	BreezeHost	256
38.68.14.0/24	AS400810	BreezeHost	256
38.83.138.0/24	AS400810	BreezeHost	256
38.145.91.0/24	AS400833	Syban Systems Ltd	256
38.145.90.0/24	AS400833	Syban Systems Ltd	256
38.145.104.0/24	AS400833	Syban Systems Ltd	256
38.145.107.0/24	AS400833	Syban Systems Ltd	256
38.145.106.0/24	AS400833	Syban Systems Ltd	256
38.145.105.0/24	AS400833	Syban Systems Ltd	256
38.252.75.0/24	AS400939	Cooperativa de Telecomunicaciones de Puerto Rico (CTPR COOP)	256
38.89.138.0/24	AS40094	Southcentral Foundation	256
38.180.14.0/24	AS9009	3NT SOLUTIONS LLP	256
38.66.87.0/24	AS33257	White Label Communications LLC	256
38.180.222.0/24	AS58061	3NT SOLUTIONS LLP	256
38.211.195.0/24	AS400941	NUBINITY	256
38.244.205.0/24	AS58061	3NT SOLUTIONS LLP	256
38.225.210.0/24	AS33426	PeopleFluent	256
38.111.224.0/24	AS400964	College of the Holy Cross	256
38.159.181.0/24	AS3356		256
38.180.132.0/24	AS58061	3NT SOLUTIONS LLP	256
38.244.217.0/24	AS58061	3NT SOLUTIONS LLP	256
38.147.139.0/24	AS33599	Reliable Reports	256
38.101.194.0/24	AS401304	PropelCLOUD LLC	256
38.146.132.0/24	AS401316	Praetorian	256
38.146.131.0/24	AS401316	Praetorian	256
38.123.174.0/24	AS401322		256
38.134.104.0/24	AS401322	NetO Corp	256
38.134.105.0/24	AS401322	NetO Corp	256
38.252.8.0/24	AS40156	Newline Hosting	256
38.180.188.0/24	AS9009	3NT SOLUTIONS LLP	256
38.87.160.0/24	AS401802	Kantime - Kanrad Technologies Inc	256
38.180.98.0/24	AS58061	3NT SOLUTIONS LLP	256
38.29.185.0/24	AS402143	Position Watch	256
38.29.193.0/24	AS402143	Position Watch	256
38.180.223.0/24	AS58061	3NT SOLUTIONS LLP	256
38.96.184.0/24	AS40296	Rubenstein Associates, Inc.	256
38.96.177.0/24	AS40303	Aksia LLC	256
38.22.109.0/24	AS40318	Quesys Inc	256
38.172.213.0/24	AS40336		256
38.102.69.0/24	AS40470	Protected.CA Inc.	256
38.29.189.0/24	AS40510	Southern Fiber Worx	256

Hosted domains

There are 4,843,519 domain names hosted across 819,002 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	2115
38.88.82.220	focuslinkglobal.com	1964
38.45.18.203	fuellogisticsandfinance.nl	1078
38.70.16.72	edhelper.com	1029
38.88.82.216	flatearth101.com	849
38.190.187.101	agenprica.com	779
38.88.82.62	hobbizine.com	778
38.88.82.214	mylittlelearners.com	759
38.88.82.217	herrickmi.us	734
38.88.82.218	sunnionlineradio.com	702
38.88.82.215	gngpublications.com	667
38.40.244.238	baumasch-bg.com	603
38.88.82.58	bbcfacts.com	586
38.63.68.228	hcgkfzl.top	557
38.88.82.224	recessions.love	516
38.47.222.160	71z8p8.cfd	514
38.88.82.223	amitabhpastore.com	505
38.97.40.99	fluffybernie.com	484
38.88.82.222	texomagolfcarts.com	446
38.61.9.13	xinyinglight.com	429

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

2,436,077 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
38.75.107.46	AS174 Cogent Communications, LLC	`12.04ms` from Chicago, US
38.75.45.1	AS59538 UPSTREAM NETWORK LTD	`0.18ms` from Fremont, US
38.74.146.3	AS174 Cogent Communications, LLC	`0.22ms` from Los Angeles, US
38.75.41.19	AS174 Cogent Communications, LLC	`0.96ms` from Los Angeles, US
38.75.72.1	AS174 Cogent Communications, LLC	`0.93ms` from New York City, US
38.74.44.1	AS398721 OXIO	`4.08ms` from Toronto, CA
38.73.227.33	AS63071 Stafford County Public Schools	`2.92ms` from Ashburn, US
38.73.226.1	AS263767 CORPORACIÓN GALA IT, C.A.	`0.40ms` from Caracas, VE
38.75.225.170	AS174 Cogent Communications, LLC	`0.26ms` from Chicago, US
38.75.133.3	AS54583 American College of Surgeons	`4.47ms` from Chicago, US
38.75.231.3	AS174 Cogent Communications, LLC	`1.92ms` from Dallas, US
38.76.8.3	AS174 Cogent Communications, LLC	`0.26ms` from Johannesburg, ZA
38.75.19.253	AS32945 Tekwerks Internet	`0.38ms` from Los Angeles, US
38.74.249.142	AS263806 GALAXY ENTERTAINMENT DE VENEZUELA, S.C.A.	`32.29ms` from Miami, US
38.73.255.174	AS27611 Starry, Inc.	`1.44ms` from New York City, US
38.73.254.225	AS27611 Starry, Inc.	`2.70ms` from New York City, US
38.74.202.253	AS398576 Premium Choice Broadband	`11.68ms` from New York City, US
38.75.208.1	AS174 Cogent Communications, LLC	`0.92ms` from Tampa, US
38.74.45.65	AS398721 OXIO	`3.82ms` from Toronto, CA
38.75.238.65	AS397142 City of Fort Collins	`1.90ms` from Denver, US
38.76.48.1	AS62560 Hosted America	`5.58ms` from Durham, US
38.75.14.66	AS174 Cogent Communications, LLC	`1.94ms` from Los Angeles, US
38.75.75.1	AS174 Cogent Communications, LLC	`0.85ms` from New York City, US
38.74.197.242	AS174 Cogent Communications, LLC	`0.59ms` from New York City, US
38.74.200.1	AS398576 Premium Choice Broadband	`8.64ms` from New York City, 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
174.83.74.200	AS20115 Charter Communications LLC	`19.57ms` from Ashburn, US
44.253.23.216	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
81.83.118.24	AS6848 Telenet BV	`5.31ms` from Brussels, BE
76.154.90.216	AS7922 Comcast Cable Communications, LLC	`5.16ms` from Denver, US
131.234.130.216	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`5.25ms` from Duesseldorf, DE
99.190.148.104	AS7018 AT&T Enterprises, LLC	`1.50ms` from Houston, US
58.235.57.136	AS9318 SK Broadband Co Ltd	`6.76ms` from Incheon, KR
102.36.230.8	AS328555 Timeless Network Services Ltd	`0.97ms` from Lagos, NG
2.127.221.136	AS5607 Sky UK Limited	`5.61ms` from London, GB
47.149.78.232	AS5650 Frontier Communications of America, Inc.	`3.75ms` from Los Angeles, US
66.39.47.24	AS7859 pair Networks	`0.12ms` from Pittsburgh, US
45.114.189.8	AS10111 Zeofast Network	`0.36ms` from Singapore, SG
5.79.120.72	AS60781 LeaseWeb Netherlands B.V.	`0.22ms` from Amsterdam, NL
104.10.189.8	AS7018 AT&T Enterprises, LLC	`13.04ms` from Atlanta, US
58.6.126.216	AS4739 Internode Pty Ltd	`4.20ms` from Brisbane, AU
222.163.116.200	AS4837 CHINA UNICOM China169 Backbone	`3.37ms` from Changchun, CN
86.176.153.136	AS2856 British Telecommunications PLC	`2.52ms` from Erith, GB
180.246.247.248	AS7713 PT Telekomunikasi Indonesia	`16.88ms` from Jakarta, ID
95.190.26.200	AS12389 PJSC Rostelecom	`6.74ms` from Novosibirsk, RU
176.187.230.88	AS5410 Bouygues Telecom SA	`8.84ms` from Paris, FR
73.231.189.248	AS7922 Comcast Cable Communications, LLC	`4.97ms` from San Jose, US
140.135.182.24	AS1659 Taiwan Academic Network (TANet) Information Center	`2.01ms` from Taipei, TW
60.47.82.72	AS4713 NTT DOCOMO BUSINESS,Inc.	`13.64ms` from Tokyo, JP
20.151.132.168	AS8075 Microsoft Corporation	`0.16ms` from Toronto, CA
212.15.161.168	AS12810 A1 Hrvatska d.o.o.	`1.83ms` from Zagreb, HR

Traceroute

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

traceroute -a -n -q1 -f4 -m9 38.4.165.101

traceroute to 38.4.165.101 (38.4.165.101): 9 hops max, 52 byte packets

4 [AS174] 154.24.94.202 2.448 ms

5 [AS174] 154.24.8.229 1.162 ms

6 [AS174] 154.54.1.173 1.589 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Seattle, US

On March 29th 2026

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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