38.121.20.0/23

AS174 · Cogent Communications, LLC

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Summary

Country	United States
Domain
ASN	AS174
Parent Range	38.0.0.0/8
Registry	RWHOIS
ID	NET4-2679140017

WHOIS Details

No whois details available for this network

Overlapping Ranges

BGP prefixes that contain 38.121.20.0/23

Range	ASN	Company	Num of IPs
38.0.0.0/8	AS174	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS7029	Cogent Communications, LLC	16,777,216

Nearby Ranges

BGP prefixes that overlap with 38.121.0.0/16

Range	ASN	Company	Num of IPs
38.0.0.0/8	AS7029	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS174	Cogent Communications, LLC	16,777,216
38.121.208.0/20	AS266841	GALANET SOLUTION C.A.	4,096
38.121.240.0/20	AS26932	Cogent Communications - IPENG	4,096
38.121.24.0/21	AS9246		2,048
38.121.200.0/22	AS63104	Mohawk Networks, LLC	1,024
38.121.44.0/22	AS174	Code 200, UAB	1,024
38.121.124.0/22	AS174	Western Iowa Wireless	1,024
38.121.196.0/22	AS63104	Mohawk Networks, LLC	1,024
38.121.194.0/23	AS11722	Citizens Telephone of Hammond, New York, Inc.	512
38.121.96.0/23	AS174	Nexus Air Fiber	512
38.121.120.0/23	AS174	Western Iowa Wireless	512
38.121.54.0/24	AS174	MorningStar Partners, LLP	256
38.121.53.0/24	AS18689	Gwynn Group	256
38.121.52.0/24	AS208122	Tractum for Contracting	256
38.121.115.0/24	AS22890	Nebraska Colocation Centers LLC	256
38.121.116.0/24	AS22890	Nebraska Colocation Centers LLC	256
38.121.123.0/24	AS26042	Warpline LLC	256
38.121.225.0/24	AS273127	VITERI HERNANDEZ CHRYSTIAN PATRICIO	256
38.121.180.0/24	AS36227	Haug Partners LLP	256
38.121.104.0/24	AS396004	TIGER COMPUTER CONSULTING, LLC	256
38.121.58.0/24	AS397468	Think On Inc.	256
38.121.118.0/24	AS399503	Americom Networks LLC	256
38.121.17.0/24	AS399606	The Private Network Ltd	256
38.121.191.0/24	AS40719	One William Street Capital Management, L.P	256
38.121.137.0/24	AS53900	OrbiMed Advisors, LLC	256
38.121.61.0/24	AS63199	CDS Global Cloud Co., Ltd	256
38.121.43.0/24	AS63023	GLOBALTELEHOST CORP.	256
38.121.74.0/24	AS13845	Think On Inc.	256
38.121.229.0/24	AS14310	Safra National Bank of New York	256
38.121.112.0/24	AS174	Western Iowa Wireless	256
38.121.114.0/24	AS174	Devatnet LLC	256
38.121.119.0/24	AS174	DUBHE MEDIA TECHNOLOGY LIMITED	256
38.121.145.0/24	AS174	Havas Health, Inc.	256
38.121.170.0/24	AS174	The Raine Group, LLC	256
38.121.190.0/24	AS174	Regus Management Group, LLC	256
38.121.19.0/24	AS174	N-able Cloud GmbH	256
38.121.193.0/24	AS174	Adirondack Techs	256
38.121.33.0/24	AS174	Provision Data Services	256
38.121.41.0/24	AS174	MEFlagship LLC	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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Pingable IPs

510 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
38.121.21.190	AS174 Cogent Communications, LLC	`0.73ms` from Los Angeles, US
38.121.20.97	AS174 Cogent Communications, LLC	`0.72ms` from Los Angeles, 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
5.179.86.167	AS31027 GlobalConnect A/S	`0.66ms` from Copenhagen, DK
24.162.74.247	AS11427 Charter Communications Inc	`8.75ms` from Dallas, US
86.17.17.167	AS5089 Virgin Media Limited	`6.37ms` from Erith, GB
8.138.107.119	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.11ms` from Guangzhou, CN
221.138.80.23	AS9318 SK Broadband Co Ltd	`1.41ms` from Incheon, KR
180.232.179.151	AS9658 Eastern Telecoms Phils., Inc.	`1.06ms` from Manila, PH
70.54.20.23	AS577 Bell Canada	`3.77ms` from Montreal, CA
37.200.136.199	AS50010 Omani Qatari Telecommunication Company SAOC	`4.38ms` from Muscat, OM
68.205.209.135	AS33363 Charter Communications, Inc	`12.79ms` from Orlando, US
191.191.248.87	AS28573 Claro NXT Telecomunicacoes Ltda	`6.96ms` from Osasco, BR
125.183.250.119	AS17858 LG POWERCOMM	`5.76ms` from Seoul, KR
14.45.191.167	AS4766 Korea Telecom	`6.89ms` from Seoul, KR
174.86.185.167	AS20115 Charter Communications LLC	`4.44ms` from St. Louis, US
201.0.34.87	AS27699 TELEFÔNICA BRASIL S.A	`1.01ms` from São Paulo, BR
153.204.22.183	AS4713 NTT DOCOMO BUSINESS,Inc.	`9.63ms` from Tokyo, JP
77.165.195.215	AS1136 KPN B.V.	`3.45ms` from Amsterdam, NL
73.216.104.39	AS7922 Comcast Cable Communications, LLC	`9.77ms` from Ashburn, US
35.93.46.23	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
52.26.0.39	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
81.82.198.71	AS6848 Telenet BV	`5.19ms` from Brussels, BE
52.51.45.119	AS16509 Amazon.com, Inc.	`0.11ms` from Dublin, IE
162.227.209.39	AS7018 AT&T Enterprises, LLC	`2.39ms` from Houston, US
195.22.196.119	AS6762 TELECOM ITALIA SPARKLE S.p.A.	`0.09ms` from Milan, IT
92.170.16.119	AS3215 Orange S.A.	`2.21ms` from Paris, FR
216.115.171.135	AS11676 Conduent Business Services, LLC	`2.94ms` from Salt Lake City, US

Traceroute

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

traceroute -a -n -q1 -f4 38.121.20.187

traceroute to 38.121.20.187 (38.121.20.187): 64 hops max, 52 byte packets

4 [AS174] 154.54.25.66 1.525 ms

5 [AS174] 38.121.20.187 0.838 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On January 9th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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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