AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,362 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,832
37,672,960 (147,160 × /24)
IPv6 prefixes
530
58 × /32
Upstreams
92
transit providers observed
Peers
22
settlement-free adjacencies
Downstreams
6,446
transit customers observed
Customer cone
67,201
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
3,832 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.68.153.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.154.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.155.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.156.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.157.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.158.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.159.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.68.195.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.68.202.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.68.205.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.1.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.7.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.37.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.40.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.48.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.53.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.69.56.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.57.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.58.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.131.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.138.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.146.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.148.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.150.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.159.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.162.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.167.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.170.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.172.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.183.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.192.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.195.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-08 |
| 38.69.218.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.221.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.232.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.69.240.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.9.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.13.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.14.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.18.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.22.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.27.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.137.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.219.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.221.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.224.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.233.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.70.238.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.11.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.15.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.19.0/24 v4 | no ROA | 10 | 37721174 | 2026-09-18 |
| 38.71.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.71.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.112.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.116.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.71.194.0/24 v4 | no ROA | 2 | 50300174 | 2026-09-18 |
| 38.71.201.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.106.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.109.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.116.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.118.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.121.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.126.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.130.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.131.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.142.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.143.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.152.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.157.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.72.159.0/24 v4 | no ROA | 19 | 34549174 | 2026-09-18 |
| 38.72.195.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.73.96.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.73.192.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.73.236.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.73.238.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.5.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.60.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.61.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.62.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.66.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.74.67.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.2.0/24 v4 | no ROA | 13 | 37721174 | 2026-11-11 |
| 38.75.13.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.25.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.72.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.87.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.88.0/23 v4 | no ROA | 13 | 37721174 | 2026-11-11 |
| 38.75.196.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.198.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.200.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.75.211.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-29 |
| 38.75.216.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.1.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.25.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.32.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.67.0/24 v4 | no ROA | 11 | 37721174 | 2026-09-18 |
| 38.76.70.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.75.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.76.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.144.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.148.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.244.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.246.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.76.248.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-23 |
| 38.76.249.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-23 |
| 38.77.1.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.2.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.4.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.6.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.7.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.16.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.38.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.67.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-20 |
| 38.77.80.0/23 v4 | no ROA | 13 | 37721174 | 2026-10-20 |
| 38.77.97.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-20 |
| 38.77.98.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.128.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.140.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.141.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.205.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.208.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.228.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.77.251.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.65.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.130.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-15 |
| 38.78.131.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.132.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.136.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.137.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.140.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.144.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.224.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.236.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.238.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.78.239.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.6.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.24.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.35.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.45.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.46.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.81.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.89.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.108.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.112.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.79.140.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.79.141.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.79.197.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.66.0/24 v4 | no ROA | 12 | 37721174 | 2026-10-24 |
| 38.80.67.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.68.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.70.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.76.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.92.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.112.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.124.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.136.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.144.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.156.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.164.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.168.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.175.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.184.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.187.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.80.188.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.33.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.69.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.71.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.76.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.123.0/24 v4 | no ROA | 23 | 37721174 | 2026-11-10 |
| 38.81.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-11-10 |
| 38.81.161.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.162.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.172.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.180.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.81.197.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.0.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.2.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.16.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.18.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.194.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.82.220.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.4.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.21.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-14 |
| 38.83.40.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.83.41.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.42.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.53.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.58.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.60.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.64.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.95.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.117.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.119.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.83.136.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |