AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,484 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,954
37,621,760 (146,960 × /24)
IPv6 prefixes
530
58 × /32
Upstreams
82
transit providers observed
Peers
22
settlement-free adjacencies
Downstreams
6,440
transit customers observed
Customer cone
66,225
ASes reachable through it
Registry and operator data
- AS number
- AS174
- Name
- Cogent Communications, LLC
- Organisation
- Cogent Communications, Inc.
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 1996-05-16
- Network type
- NSP
- Traffic levels
- 100+Tbps
- Scope
- Global
- Peering policy
- No
- Website
- http://www.cogentco.com/
- Looking glass
- http://www.cogentco.com/en/network/looking-glass
- PeeringDB
- net/267
- Facilities
- 816
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
4,484 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.123.222.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.123.227.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.123.230.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.123.231.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.123.235.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.123.255.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.2.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.6.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.10.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.30.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.32.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.40.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.53.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.60.0/23 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.124.64.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.68.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.124.72.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.124.79.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.105.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.108.0/23 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.124.110.0/23 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.124.128.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.147.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.153.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.156.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.192.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.194.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.196.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.202.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.203.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.204.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.205.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.208.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.232.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.233.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.234.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.124.235.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.0.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.2.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.8.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.14.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.18.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.32.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.47.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.55.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.64.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.90.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.100.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.102.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.119.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.161.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.177.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.212.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.125.214.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.10.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.13.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.34.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.126.37.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.39.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.48.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.49.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.52.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.53.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.56.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.57.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.58.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.59.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.60.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.61.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.62.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.67.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.106.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.126.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.136.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.151.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.154.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.161.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.199.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.208.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.210.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.216.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.224.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.126.229.0/24 v4 | no ROA | 8 | 22652174 | 2026-09-18 |
| 38.127.22.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.67.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.93.0/24 v4 | no ROA | 7 | 22652174 | 2026-09-18 |
| 38.127.100.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.114.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.118.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.120.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.121.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.123.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.124.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.148.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.159.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.164.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.172.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.176.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.179.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.187.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.199.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.222.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.225.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.230.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.127.237.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.4.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.99.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.106.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.108.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.152.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.156.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.128.240.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.6.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.12.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.45.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.46.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.53.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.68.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.72.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.90.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.167.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.176.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.177.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.178.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.179.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.129.184.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.68.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.130.72.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.74.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.80.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.130.88.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.130.99.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.104.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.107.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.116.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.132.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.138.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.150.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.154.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.156.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.244.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.254.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.130.255.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.0.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.2.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.39.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.49.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.60.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.148.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.151.0/24 v4 | no ROA | 19 | 34549174 | 2026-09-18 |
| 38.131.152.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.131.153.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.131.154.0/24 v4 | no ROA | 19 | 34549174 | 2026-09-18 |
| 38.131.160.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.168.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.176.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.220.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.131.223.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.42.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.192.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.200.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.205.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.212.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.132.213.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.132.232.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.80.0/20 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.120.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.133.135.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.139.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.140.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.145.0/24 v4 | no ROA | 2 | 50300174 | 2026-09-18 |
| 38.133.150.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.168.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.179.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.180.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.182.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.183.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.186.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.133.203.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.214.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.218.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.222.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.133.234.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.98.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.101.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.122.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.125.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.134.129.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.146.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.148.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.150.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.187.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.192.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.134.216.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.242.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.251.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.252.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.253.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.134.254.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.135.38.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |