Autonomous System details

AS4001

Cogent Communications, LLC · cogentco.com

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AS4001 – Cogent Communications, LLC

Field	Value
Country	United States
Website	cogentco.com
Hosted domains	0
IPv4 addresses	0
IPv6 addresses	0
ASN type	Inactive
Registry	arin
Allocated	31 years ago on Nov 04, 1994
Updated	20 days ago on Dec 23, 2025

IP Ranges

There are no known IP addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS4001
                                                OrgID:          AS4001
                                                ASName:         AS4001
                                                ASNumber:       AS4001
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There are no peers for this ASN.

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Upstreams

There are no upstreams for this ASN.

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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

No IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

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
84.38.224.145	AS31673 Uniserver Internet B.V.	`0.55ms` from Amsterdam, NL
128.143.34.1	AS225 University of Virginia	`3.25ms` from Ashburn, US
155.186.179.1	AS20115 Charter Communications LLC	`3.01ms` from Atlanta, US
71.81.208.1	AS20115 Charter Communications LLC	`6.17ms` from Atlanta, US
166.102.83.225	AS7029 Windstream Communications LLC	`2.19ms` from Atlanta, US
73.190.216.97	AS7922 Comcast Cable Communications, LLC	`14.48ms` from Atlanta, US
156.62.97.241	AS24398 Auckland University of Technology	`1.14ms` from Auckland, NZ
101.109.85.1	AS23969 TOT Public Company Limited	`1.60ms` from Bangkok, TH
110.249.46.1	AS4837 CHINA UNICOM China169 Backbone	`7.09ms` from Beijing, CN
60.29.119.33	AS4837 CHINA UNICOM China169 Backbone	`5.38ms` from Beijing, CN
183.242.210.1	AS56048 China Mobile Communicaitons Corporation	`2.47ms` from Beijing, CN
85.201.109.1	AS12392 VOO S.A.	`2.83ms` from Brussels, BE
88.158.134.1	AS15471 S.N. Radiocomunicatii S.A.	`4.57ms` from Bucharest, RO
113.241.134.113	AS4134 CHINANET-BACKBONE	`11.10ms` from Changsha, CN
8.225.237.1	AS3356 Level 3 Parent, LLC	`1.31ms` from Chicago, US
68.51.121.1	AS7922 Comcast Cable Communications, LLC	`9.66ms` from Chicago, US
72.177.96.1	AS11427 Charter Communications Inc	`2.43ms` from Dallas, US
67.18.81.145	AS36351 IBM Cloud	`1.69ms` from Dallas, US
27.121.114.129	AS395301 Resound Networks, LLC	`8.99ms` from Dallas, US
155.12.113.161	AS37084 Simbanet (T) Limited	`1.35ms` from Dar es Salaam, TZ
20.46.19.161	AS8075 Microsoft Corporation	`0.51ms` from Des Moines, US
206.71.95.129	AS13649 Flexential Colorado Corp.	`1.07ms` from Draper, US
212.114.168.97	AS8767 M-net Telekommunikations GmbH	`3.51ms` from Frankfurt am Main, DE
196.44.180.1	AS37189 YoAfrica (Pvt) Ltd	`9.39ms` from Gaborone, BW
130.241.124.1	AS2842 Goteborgs universitet	`0.89ms` from Goeteborg, SE

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS4001 at robtex.

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