AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,268 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,739
37,646,080 (147,055 × /24)
IPv6 prefixes
529
58 × /32
Upstreams
87
transit providers observed
Peers
22
settlement-free adjacencies
Downstreams
6,437
transit customers observed
Customer cone
67,319
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
3,739 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.84.29.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-25 |
| 38.84.30.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-25 |
| 38.84.31.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-25 |
| 38.84.38.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.46.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.57.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.72.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.80.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.81.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.82.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.88.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.94.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.143.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.153.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.163.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.167.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.200.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.84.222.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.33.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.40.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.41.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.44.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.48.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.51.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.68.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.78.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.89.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.136.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.168.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.176.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.193.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.194.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.212.0/24 v4 | no ROA | 30 | 34549174 | 2026-10-27 |
| 38.86.218.0/23 v4 | no ROA | 13 | 37721174 | 2026-10-03 |
| 38.86.222.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.234.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.240.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.86.245.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.34.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.35.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.36.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.38.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.39.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.40.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.46.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.52.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.56.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.57.0/24 v4 | no ROA | 36 | 34549174 | 2026-09-18 |
| 38.87.59.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.64.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.66.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.67.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.80.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.82.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.84.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.85.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.87.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.169.0/24 v4 | no ROA | 29 | 37721174 | 2026-09-18 |
| 38.87.171.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.196.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.204.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.206.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.207.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.229.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.247.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.87.254.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.65.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.66.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.69.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.71.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.74.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-15 |
| 38.88.84.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.88.86.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.88.87.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.64.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.66.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.68.0/24 v4 | no ROA | 2 | 50300174 | 2026-09-18 |
| 38.89.99.0/24 v4 | RPKI valid | 13 | 37721174 | 2026-09-18 |
| 38.89.134.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.136.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.226.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.227.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.249.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.89.252.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.90.33.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.90.138.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.90.142.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.90.158.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-15 |
| 38.90.162.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.91.40.0/24 v4 | no ROA | 11 | 37721174 | 2026-09-18 |
| 38.91.55.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.91.161.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.8.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.64.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.97.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.138.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.146.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.169.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.174.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.192.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.193.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.211.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.212.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.214.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.92.216.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.61.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.63.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.97.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.93.128.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.130.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.132.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-28 |
| 38.93.138.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.144.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-28 |
| 38.93.154.0/23 v4 | no ROA | 39 | 34549174 | 2026-09-22 |
| 38.93.154.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-22 |
| 38.93.155.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-22 |
| 38.93.157.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.172.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.176.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.183.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.193.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.208.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.215.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.216.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.223.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.224.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.227.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.230.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.232.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.233.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.235.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.93.236.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.32.0/24 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.94.35.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.42.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.47.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.56.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.58.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.59.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.104.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.116.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.149.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.151.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.160.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.176.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.194.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.218.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.219.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.232.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.94.236.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.0.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.6.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.8.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.12.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.16.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.72.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.82.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.90.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.92.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.95.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.100.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.101.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.102.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.106.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.160.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.95.175.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.177.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.196.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.197.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.198.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.204.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.95.211.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.9.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.11.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.16.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.22.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.32.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.33.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.34.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.35.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.36.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.37.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.38.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.39.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.40.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.41.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.42.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.43.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.44.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.45.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.46.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.47.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.96.70.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-27 |
| 38.96.150.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.156.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |