AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,403 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,873
37,703,424 (147,279 × /24)
IPv6 prefixes
530
58 × /32
Upstreams
86
transit providers observed
Peers
22
settlement-free adjacencies
Downstreams
6,428
transit customers observed
Customer cone
65,523
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
3,873 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 209.44.64.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.51.94.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.61.0.0/17 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.70.240.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 209.105.132.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.107.195.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 209.115.0.0/17 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.127.202.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 209.146.0.0/17 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.146.36.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 209.146.37.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-30 |
| 209.146.42.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 209.146.100.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 209.146.122.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 209.206.126.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 209.227.78.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 209.227.79.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 212.20.128.0/19 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 212.20.151.0/24 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 212.134.168.0/23 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 212.189.24.0/22 v4 | RPKI invalid | 15 | 58057174 | 2026-10-19 |
| 212.189.32.0/22 v4 | RPKI valid | 41 | 34549174 | 2026-10-18 |
| 212.212.25.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-10-29 |
| 213.146.160.0/19 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 213.146.188.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 213.178.143.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 213.206.128.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.28.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.28.9.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 216.29.55.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 216.29.200.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 216.55.80.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.131.104.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 216.131.106.0/23 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 216.137.128.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.20.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.21.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.22.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.23.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.24.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.29.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.152.30.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.163.136.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.163.189.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 216.168.64.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.168.65.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 216.170.109.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.177.96.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.183.248.0/24 v4 | RPKI valid | 1 | 33331273174 | 2026-09-18 |
| 216.183.251.0/24 v4 | RPKI valid | 1 | 33331273174 | 2026-09-18 |
| 216.185.56.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 216.205.80.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.81.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.82.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.83.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.84.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-24 |
| 216.205.92.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.93.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.94.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.95.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-31 |
| 216.205.152.0/24 v4 | no ROA | 40 | 34549174 | 2026-11-03 |
| 216.211.204.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 216.226.67.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 216.229.128.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.67.78.0/23 v4 | RPKI valid | 1 | 33331257174 | 2026-09-18 |
| 217.71.112.0/20 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 217.71.113.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.118.224.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.147.96.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.147.128.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.149.32.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.151.240.0/20 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 217.151.243.0/24 v4 | no ROA | 42 | 34549174 | 2026-09-18 |