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	AS263759	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS271366	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS273244	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	AS263759	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS273244	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS7029	Cogent Communications, LLC	16,777,216
38.0.0.0/8	AS271366	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
38.121.24.0/21	AS9246		2,048
38.121.200.0/22	AS63104	Mohawk Networks, LLC	1,024
38.121.124.0/22	AS174	Western Iowa Wireless	1,024
38.121.44.0/22	AS174	Code 200, UAB	1,024
38.121.196.0/22	AS63104	Mohawk Networks, LLC	1,024
38.121.96.0/23	AS174	Nexus Air Fiber	512
38.121.194.0/23	AS11722	Citizens Telephone of Hammond, New York, Inc.	512
38.121.120.0/23	AS174	Western Iowa Wireless	512
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
38.121.54.0/24	AS174	MorningStar Partners, LLP	256
38.121.53.0/24	AS18689	Gwynn Group	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
38.121.20.199	AS174 Cogent Communications, LLC	`0.72ms` from Los Angeles, US
38.121.21.133	AS174 Cogent Communications, LLC	`0.74ms` 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
110.175.65.7	AS7545 TPG Telecom Limited	`1.42ms` from Brisbane, AU
34.46.231.71	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
101.186.158.247	AS1221 Telstra Limited	`1.78ms` from Melbourne, AU
212.171.245.39	AS3269 Telecom Italia S.p.A.	`4.97ms` from Milan, IT
76.67.194.215	AS577 Bell Canada	`3.72ms` from Montreal, CA
89.23.193.247	AS51042 Klimovsk network Ltd	`1.26ms` from Moscow, RU
116.91.110.215	AS2519 ARTERIA Networks Corporation	`2.40ms` from Osaka, JP
62.219.114.247	AS8551 Bezeq International Ltd.	`7.39ms` from Tel Aviv, IL
20.63.180.39	AS8075 Microsoft Corporation	`0.18ms` from Tokyo, JP
84.86.105.87	AS1136 KPN B.V.	`2.13ms` from Amsterdam, NL
52.87.87.71	AS14618 Amazon.com, Inc.	`0.53ms` from Ashburn, US
154.88.42.23	AS35916 MULTACOM CORPORATION	`0.47ms` from Ashburn, US
73.253.163.103	AS7922 Comcast Cable Communications, LLC	`9.52ms` from Boston, US
197.161.181.23	AS24863 Link Egypt (Link.NET)	`9.81ms` from Cairo, EG
183.222.115.247	AS9808 China Mobile Communications Group Co., Ltd.	`5.26ms` from Chengdu, CN
24.198.116.199	AS11351 Charter Communications Inc	`18.17ms` from Chicago, US
97.232.136.87	AS6167 Verizon Business	`18.16ms` from Dallas, US
112.146.245.39	AS17858 LG POWERCOMM	`2.35ms` from Incheon, KR
220.76.3.183	AS4766 Korea Telecom	`1.55ms` from Incheon, KR
50.88.200.39	AS33363 Charter Communications, Inc	`4.17ms` from Orlando, US
178.128.180.71	AS14061 DigitalOcean, LLC	`0.22ms` from San Jose, US
189.164.29.55	AS8151 UNINET	`5.46ms` from Santiago de Queretaro, MX
175.248.130.199	AS4766 Korea Telecom	`5.65ms` from Seoul, KR
218.233.180.151	AS9318 SK Broadband Co Ltd	`2.76ms` from Seoul, KR
110.7.182.103	AS4837 CHINA UNICOM China169 Backbone	`11.67ms` from Tieling, CN

Traceroute

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

traceroute -a -n -q1 -f4 38.121.21.166

traceroute to 38.121.21.166 (38.121.21.166): 64 hops max, 52 byte packets

4 [AS174] 154.54.25.149 0.776 ms

5 [AS174] 154.54.25.70 1.512 ms

6 [AS174] 38.121.21.166 0.743 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On March 13th 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.

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