AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,515 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,987
37,640,704 (147,034 × /24)
IPv6 prefixes
528
58 × /32
Upstreams
89
transit providers observed
Peers
24
settlement-free adjacencies
Downstreams
6,431
transit customers observed
Customer cone
65,558
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
4,515 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 154.22.134.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.22.136.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.22.139.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.24.0.0/13 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.2.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.6.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.67.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.130.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.136.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.138.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.149.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.151.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.152.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.28.154.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.2.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.136.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.138.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.142.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.152.0/21 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.29.175.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.0.0/24 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 154.30.34.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.36.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.38.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.128.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.130.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.140.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.144.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.30.154.0/24 v4 | no ROA | 19 | 34549174 | 2026-09-18 |
| 154.30.186.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.36.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.36.128.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.72.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.76.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.156.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.158.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.172.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.174.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.176.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.178.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.180.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.182.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.192.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.194.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.198.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.37.208.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.21.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.26.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.32.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.34.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.36.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.38.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.38.130.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.39.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.39.3.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.40.0.0/13 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.40.138.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.40.140.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.65.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.70.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.79.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.41.80.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.86.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-22 |
| 154.41.133.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.138.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.41.139.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.42.4.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.37.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.39.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.49.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.50.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.57.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.43.60.0/24 v4 | no ROA | 1 | 3492761049174 | 2026-09-18 |
| 154.43.61.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.66.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.67.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.68.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.130.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.160.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.161.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.162.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.43.167.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.0.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.4.0/24 v4 | no ROA | 6 | 37721174 | 2026-09-18 |
| 154.44.5.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.6.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.9.0/24 v4 | no ROA | 6 | 37721174 | 2026-09-18 |
| 154.44.12.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.16.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.130.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.180.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.44.185.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.43.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.45.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.81.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.82.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.214.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.45.236.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.46.128.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.46.130.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.47.5.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.47.6.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.47.152.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.47.154.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.47.159.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.0.0/12 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.48.200.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.202.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.209.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.214.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.48.216.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.221.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.238.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.246.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.247.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.48.248.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.68.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.70.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.72.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.73.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.74.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.75.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.97.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.114.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.115.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.128.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.129.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.130.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.131.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.132.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.133.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.134.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.135.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.140.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.49.193.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.194.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.196.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.200.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.208.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.209.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.219.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.49.220.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.1.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.5.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.37.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.42.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.50.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.53.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.55.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.56.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.98.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.109.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 154.50.111.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.120.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.50.120.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.50.121.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.50.136.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.193.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.50.201.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.10.0/24 v4 | RPKI invalid | 7 | 58057174 | 2026-09-23 |
| 154.51.11.0/24 v4 | RPKI invalid | 7 | 58057174 | 2026-09-23 |
| 154.51.14.0/24 v4 | no ROA | 31 | 34549174 | 2026-09-18 |
| 154.51.67.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.72.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.76.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.78.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 154.51.96.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.97.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.98.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.99.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.100.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.101.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.102.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.103.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.104.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.105.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.106.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.107.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.108.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.109.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.110.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.111.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.112.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.113.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.114.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 154.51.115.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 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 |