Autonomous System details

AS7421

Cogent Communications, LLC  ·  cogentco.com

United States

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AS7421 – Cogent Communications, LLC

Field Value
Country United States
Website cogentco.com
Hosted domains 0
IPv4 addresses 163,840
IPv6 addresses 0
ASN type ISP
Registry arin
Allocated 29 years ago on Dec 06, 1996
Updated 22 days ago on Dec 23, 2025

IP Ranges

Netblock Company Num of IPs
204.204.0.0/15 Cogent Communications, LLC 131,072
209.120.0.0/17 Cogent Communications, LLC 32,768

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS7421
                                                OrgID:          AS7421
                                                ASName:         AS7421
                                                ASNumber:       AS7421
                                                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 2 peers for this ASN.

Peers Name
AS199524 G-Core Labs S.A.
AS8529 Zain Omantel International FZ-LLC
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ASN API & Database

Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS199524 G-Core Labs S.A.
AS8529 Zain Omantel International FZ-LLC
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
209.120.8.24 AS7421 Cogent Communications, LLC 0.27ms from Ashburn, US
204.205.217.208 AS7421 Cogent Communications, LLC 24.48ms from Ashburn, US
209.120.89.53 AS7421 Cogent Communications, LLC 24.56ms from Ashburn, US
204.205.239.50 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.205.95.251 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.204.108.202 AS7421 Cogent Communications, LLC 0.28ms from Ashburn, US
209.120.118.221 AS7421 Cogent Communications, LLC 24.56ms from Ashburn, US
204.205.86.215 AS7421 Cogent Communications, LLC 24.48ms from Ashburn, US
204.204.99.162 AS7421 Cogent Communications, LLC 24.50ms from Ashburn, US
209.120.87.99 AS7421 Cogent Communications, LLC 24.57ms from Ashburn, US
204.205.114.178 AS7421 Cogent Communications, LLC 24.48ms from Ashburn, US
204.205.137.211 AS7421 Cogent Communications, LLC 24.50ms from Ashburn, US
204.204.95.151 AS7421 Cogent Communications, LLC 24.50ms from Ashburn, US
204.204.51.66 AS7421 Cogent Communications, LLC 24.50ms from Ashburn, US
204.204.25.99 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.205.165.138 AS7421 Cogent Communications, LLC 24.51ms from Ashburn, US
204.205.166.127 AS7421 Cogent Communications, LLC 24.48ms from Ashburn, US
204.204.169.209 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.205.132.181 AS7421 Cogent Communications, LLC 0.26ms from Ashburn, US
204.205.53.79 AS7421 Cogent Communications, LLC 24.51ms from Ashburn, US
204.204.79.126 AS7421 Cogent Communications, LLC 24.50ms from Ashburn, US
204.204.11.215 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.205.54.253 AS7421 Cogent Communications, LLC 0.17ms from Ashburn, US
204.204.78.97 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, US
204.204.109.210 AS7421 Cogent Communications, LLC 24.49ms from Ashburn, 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
61.148.148.29 AS4808 China Unicom Beijing Province Network 3.48ms from Beijing, CN
14.142.235.125 AS4755 TATA Communications formerly VSNL is Leading ISP 0.41ms from Chennai, IN
24.127.238.237 AS7922 Comcast Cable Communications, LLC 5.19ms from Flint, US
37.52.244.93 AS6849 JSC "Ukrtelecom" 0.49ms from Kyiv, UA
61.159.105.141 AS4134 CHINANET-BACKBONE 2.85ms from Lanzhou, CN
92.71.158.45 AS41354 ITS Technology Group Limited 0.56ms from London, GB
213.165.144.109 AS8426 ClaraNET LTD 0.44ms from London, GB
88.177.88.13 AS12322 Free SAS 3.69ms from Paris, FR
183.203.90.45 AS132510 IDC ShanXi China Mobile communications corporation 18.69ms from Qingdao, CN
38.11.48.29 AS54600 PEG TECH INC 0.64ms from San Jose, US
96.54.217.189 AS6327 Shaw Communications 9.24ms from Seattle, US
20.167.33.141 AS8075 Microsoft Corporation 0.67ms from Sydney, AU
81.24.0.61 AS25151 Cyso Group B.V. 0.87ms from Amsterdam, NL
71.81.26.13 AS20115 Charter Communications LLC 5.32ms from Atlanta, US
35.162.187.157 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
80.200.89.157 AS5432 Proximus NV 2.22ms from Brussels, BE
41.141.3.221 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 8.37ms from Casablanca, MA
34.55.185.237 AS396982 Google LLC 0.11ms from Council Bluffs, US
52.238.252.109 AS8075 Microsoft Corporation 0.16ms from Des Moines, US
24.230.159.253 AS11232 Midcontinent Communications 2.02ms from Minneapolis, US
32.220.228.221 AS46690 Southern New England Telephone Company and SNET America, Inc. 4.42ms from New York City, US
203.209.177.237 AS18126 Chubu Telecommunications Company, Inc. 3.21ms from Osaka, JP
150.43.27.61 AS2907 Research Organization of Information and Systems, National Institute of Informatics 13.10ms from Osaka, JP
52.180.100.109 AS8075 Microsoft Corporation 0.55ms from San Jose, US
104.148.186.13 AS6128 Cablevision Systems Corp. 6.99ms from Secaucus, US

Traceroute

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

$
traceroute -a -n -q1 -f3 204.204.6.96
traceroute to 204.204.6.96 (204.204.6.96): 64 hops max, 52 byte packets
4 [AS3257] 89.149.130.50 9.094 ms
5 *
6 *
7 *
8 *
9 [AS7421] 204.204.6.96 33.038 ms
Measurement taken from IPinfo ProbeNet in Allentown, US
On

Related Networks

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 AS7421 at robtex.

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