Whois: Cogent Communications
| Hosting Company: | Cogent Communications  |
| Hosting ASN: | AS174 |
| Hosting Address: | 2450 N Street NW |
| Hosting Website: | http://www.cogentco.com/ |
| Hosting Country: |  United States, Washington |
Cogent Communications ip ranges
| # | Range | CDIR | Ip count | Name | Location |
|---|---|---|---|---|---|
| 1 | 5.182.110.0 - 5.182.111.255 | 5.182.110.0/24 | 512 | IPXO | United States |
| 2 | 23.142.100.0 - 23.142.100.255 | 23.142.100.0/24 | 256 | BRIGHTMIND-02 | United States |
| 3 | 23.148.124.0 - 23.148.124.255 | 23.148.124.0/24 | 256 | MESH | United States |
| 4 | 31.14.40.0 - 31.14.42.255 | 31.14.40.0/22.415037499279 | 768 | RO-DATAROOM-20110418 |  Romania |
| 5 | 38.0.0.0 - 38.255.255.255 | 38.0.0.0/8 | 17,777,216 | COGENT-A |  Germany |
| 6 | 45.33.128.0 - 45.33.143.255 | 45.33.128.0/20 | 4,096 | CLOUDMOSA-45-33-128-0 | United States |
| 7 | 45.87.68.0 - 45.87.68.255 | 45.87.68.0/24 | 256 | DE-InternetINFrankfurt-20190717 | Germany |
| 8 | 45.88.97.0 - 45.88.97.255 | 45.88.97.0/24 | 256 | Heficed |  Turkey |
| 9 | 45.133.172.0 - 45.133.173.255 | 45.133.172.0/24 | 512 | IPXO |  United Kingdom |
| 10 | 45.152.188.0 - 45.152.188.255 | 45.152.188.0/24 | 256 | NET-45-152-188-0-24 | United States |
| 11 | 45.195.244.0 - 45.195.244.255 | 45.195.244.0/24 | 256 | United States |
|
| 12 | 50.7.92.0 - 50.7.95.255 | 50.7.92.0/22 | 1,024 | FDCSERVERS-AMSTERDAM2 |  Netherlands |
| 13 | 50.7.140.0 - 50.7.143.255 | 50.7.140.0/22 | 1,024 | FDCSERVERS-AMSTERDAM | Netherlands |
| 14 | 66.28.0.0 - 66.28.255.255 | 66.28.0.0/16 | 66,536 | COGENT-NB-0000 | United States |
| 15 | 66.251.128.0 - 66.251.191.255 | 66.251.128.0/18 | 16,384 | ORG-LA3-AFRINIC |  South Africa |
| 16 | 67.159.8.0 - 67.159.9.255 | 67.159.8.0/23 | 512 | FDCSERVERS-AMSTERDAM | Netherlands |
| 17 | 86.54.28.0 - 86.54.28.255 | 86.54.28.0/24 | 256 | BlackHOST | Netherlands |
| 18 | 89.31.122.0 - 89.31.122.255 | 89.31.122.0/24 | 256 | EDIS-CZ-NET |  Czech Republic |
| 19 | 91.223.216.0 - 91.223.216.255 | 91.223.216.0/24 | 256 | ift-aerium-01 |  Ukraine |
| 20 | 102.129.128.0 - 102.129.255.255 | 102.129.128.0/17 | 33,768 | ORG-DAL1-AFRINIC | United States |
Cogent Communications domains (5 total)
| # | Name | IP | Rank | Updated |
|---|---|---|---|---|
| 1 | lists.fedoraproject.org | 38.145.32.21 | #1415 | 15.10.2025 |
| 2 | www.cogentco.com | 38.100.128.10 | #14306 | 28.11.2022 |
| 3 | forum.openvz.org | 130.117.225.133 | #115145 | 16.06.2023 |
| 4 | www.codespeedy.com | 194.195.215.189 | #724778 | 03.06.2022 |
| 5 | wiki.dieg.info | 38.242.254.233 | #985515 | 06.08.2025 |
Cogent Communications users
| # | IP | OS | Browser | Updated |
|---|---|---|---|---|
| 1 | 191.101.221.7 |  Mac OS X |
 Chrome 142.0 |
Last seen: 01.02.2026 |
| 2 | 38.135.8.75 | Mac OS X |
Chrome 137.0 |
Last seen: 01.02.2026 |
| 3 | 38.158.39.187 | Mac OS X |
 Safari Generic |
Last seen: 01.02.2026 |
| 4 | 38.137.57.18 |  Windows 10 |
 DefaultProperties |
Last seen: 01.02.2026 |
| 5 | 45.133.172.215 |  Ubuntu |
 Firefox 126.0 |
Last seen: 01.02.2026 |
| 6 | 38.183.11.1 | Mac OS X |
Chrome 125.0 |
Last seen: 01.02.2026 |
| 7 | 38.135.24.31 | Windows 10 |
Chrome 84.0 |
Last seen: 01.02.2026 |
| 8 | 38.166.36.121 | Unknown OS Platform |
 Opera Generic |
Last seen: 01.02.2026 |
| 9 | 154.28.65.26 | Unknown OS Platform |
DefaultProperties |
Last seen: 01.02.2026 |
| 10 | 38.68.184.24 |  Linux |
Chrome Generic |
Last seen: 01.02.2026 |
| 11 | 38.244.215.8 | Windows 10 |
 Edge 144.0 |
Last seen: 31.01.2026 |
| 12 | 38.190.125.36 | Linux |
Opera Generic |
Last seen: 31.01.2026 |
| 13 | 38.3.208.9 | Windows 10 |
Chrome 135.0 |
Last seen: 31.01.2026 |
| 14 | 191.101.221.21 | Mac OS X |
Chrome 127.0 |
Last seen: 31.01.2026 |
| 15 | 38.154.23.222 | Mac OS X |
Chrome 113.0 |
Last seen: 31.01.2026 |
| 16 | 38.61.175.144 | Windows 8 |
DefaultProperties |
Last seen: 31.01.2026 |
| 17 | 38.54.105.150 | Linux |
Chrome 143.0 |
Last seen: 31.01.2026 |
| 18 | 38.183.115.42 | Mac OS X |
Safari 5.1 |
Last seen: 31.01.2026 |
| 19 | 38.171.188.83 | Unknown OS Platform |
 IE 6.0 for Desktop |
Last seen: 31.01.2026 |
| 20 | 38.25.10.15 | Linux |
Opera Generic |
Last seen: 31.01.2026 |
Whois AS174
| info | ## ARIN WHOIS data and services are subject to the Terms of Use## If you see inaccuracies in the results, please report at## Copyright 1997-2022, American Registry for Internet Numbers, Ltd.### "a AS20440"## Use "?" to get help.### ARIN WHOIS data and services are subject to the Terms of Use## If you see inaccuracies in the results, please report at## Copyright 1997-2022, American Registry for Internet Numbers, Ltd.# |
| # available at | https://www.arin.net/resources/registry/whois/tou/ https://www.arin.net/resources/registry/whois/tou/ |
| # https | //www.arin.net/resources/registry/whois/inaccuracy_reporting/ //www.arin.net/resources/registry/whois/inaccuracy_reporting/ |
| # Query terms are ambiguous. The query is assumed to be | |
| ASNumber | 20440 |
| ASName | BITTO-AS1 |
| ASHandle | AS20440 |
| RegDate | 2006-10-10 2006-10-02 |
| Updated | 2012-03-02 2010-07-01 |
| Ref | https://rdap.arin.net/registry/autnum/20440 https://rdap.arin.net/registry/entity/BITTO |
| OrgName | BitTorrent, Inc. |
| OrgId | BITTO |
| Address | 612 Howard Suite 400 |
| City | San Francisco |
| StateProv | CA |
| PostalCode | 94105 |
| Country | US |
| OrgTechHandle | BTP5-ARIN |
| OrgTechName | BitTorrent Technical POC |
| OrgTechPhone | +1-415-568-9000 |
| OrgTechEmail | [email protected] |
| OrgTechRef | https://rdap.arin.net/registry/entity/BTP5-ARIN |
| OrgAbuseHandle | BAP23-ARIN |
| OrgAbuseName | BitTorrent Abuse POC |
| OrgAbusePhone | +1-415-568-9000 |
| OrgAbuseEmail | [email protected] |
| OrgAbuseRef | https://rdap.arin.net/registry/entity/BAP23-ARIN |
