AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,524 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,999
37,649,920 (147,070 × /24)
IPv6 prefixes
525
58 × /32
Upstreams
87
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,433
transit customers observed
Customer cone
65,516
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
4,524 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 154.51.116.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.117.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.118.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.119.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.120.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.121.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.122.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.123.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.124.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.125.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.126.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.127.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.152.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.159.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.162.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.168.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.176.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.184.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.192.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.244.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.245.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.248.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.52.32.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.52.35.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.52.44.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.52.45.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.52.46.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.52.50.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.53.1.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.53.72.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.53.73.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.53.76.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.53.78.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.54.248.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.55.88.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.55.90.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.55.92.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.55.94.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.88.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.92.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.93.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.94.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.95.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.100.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.118.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.126.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.126.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.127.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.128.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.130.0/24 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 154.56.131.0/24 v4 | no ROA | 18 | 58057174 | 2026-09-18 |
| 154.56.133.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.148.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.193.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.199.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.200.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.208.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.215.0/24 v4 | no ROA | 10 | 37721174 | 2026-09-18 |
| 154.56.220.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.222.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.56.240.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.241.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.242.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.243.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.244.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.245.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.246.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.247.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.254.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.254.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.56.255.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.15.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.57.24.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.57.26.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.57.27.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.57.28.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.28.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.29.0/24 v4 | RPKI invalid | 15 | 58057174 | 2026-09-18 |
| 154.57.30.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.31.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.36.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.57.39.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.57.56.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.57.85.0/24 v4 | RPKI invalid | 15 | 58057174 | 2026-09-18 |
| 154.57.136.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.0.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.4.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.20.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.28.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.32.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.129.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.141.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.142.0/24 v4 | RPKI invalid | 6 | 22652174 | 2026-09-23 |
| 154.58.197.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.202.0/24 v4 | no ROA | 33 | 34549174 | 2026-09-18 |
| 154.58.207.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.209.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.212.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.58.213.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.58.214.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.58.215.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.58.226.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.230.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-22 |
| 154.58.230.0/24 v4 | no ROA | 14 | 58057174 | 2026-09-22 |
| 154.58.231.0/24 v4 | no ROA | 14 | 58057174 | 2026-09-22 |
| 154.58.232.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.58.235.0/24 v4 | no ROA | 34 | 34549174 | 2026-09-18 |
| 154.58.236.0/24 v4 | no ROA | 1 | 4439340175358057345495511174 | 2026-09-18 |
| 154.59.94.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.102.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.103.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.104.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.106.0/23 v4 | no ROA | 9 | 37721174 | 2026-09-18 |
| 154.59.108.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.120.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.122.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.128.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.133.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.144.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.145.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.59.201.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.59.202.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.59.203.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.59.204.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.32.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.66.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.90.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 154.60.90.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 154.60.91.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 154.60.101.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.193.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.210.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.60.218.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.34.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.50.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.61.68.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.71.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.73.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.86.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.88.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.88.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.90.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.93.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.128.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.136.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.138.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.145.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.147.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.150.0/24 v4 | RPKI invalid | 8 | 58057174 | 2026-09-18 |
| 154.61.160.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.61.161.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 154.61.162.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.61.163.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.61.165.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.174.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.61.204.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.4.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.46.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.72.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.74.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.79.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.96.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.122.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.128.0/24 v4 | no ROA | 7 | 22652174 | 2026-09-18 |
| 154.62.132.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.140.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.62.141.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.62.142.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.62.143.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.62.174.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.184.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.192.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.228.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.232.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.62.233.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.1.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.26.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.64.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.68.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.69.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.141.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.63.161.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.64.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.132.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.133.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.134.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.135.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.150.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.151.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.152.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.153.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.232.0/21 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.64.240.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.88.42.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.194.46.0/23 v4 | RPKI invalid | 16 | 58057174 | 2026-09-18 |
| 154.194.48.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.214.0.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 155.117.106.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 155.117.116.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 156.46.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |