AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,545 prefixes, seen at the RIS collectors.
IPv4 prefixes
4,018
37,656,832 (147,097 × /24)
IPv6 prefixes
527
58 × /32
Upstreams
83
transit providers observed
Peers
24
settlement-free adjacencies
Downstreams
6,425
transit customers observed
Customer cone
65,441
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
4,545 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 149.127.15.0/24 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 149.127.50.0/24 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 149.127.100.0/24 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 149.127.109.0/24 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 151.240.205.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 151.241.119.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 151.241.122.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 151.243.235.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 152.89.124.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 152.89.125.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 154.3.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.20.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.21.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.22.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.23.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.24.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.25.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.26.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.31.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.41.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.46.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.52.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.54.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.60.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.62.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.80.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.82.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.84.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.86.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.132.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.133.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.135.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.136.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.144.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.152.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.160.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.176.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.220.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.225.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.232.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.234.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.249.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.250.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.3.252.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.7.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.7.152.0/21 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.7.184.0/23 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.7.186.0/23 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.7.188.0/23 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.7.190.0/23 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.7.230.0/24 v4 | no ROA | 11 | 22652174 | 2026-09-18 |
| 154.9.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.8.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.16.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.18.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.65.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.128.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.134.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.176.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.178.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.181.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.182.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.200.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.208.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.214.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.9.216.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.0.0/15 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.1.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.4.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.8.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.10.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.44.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.48.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.65.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.72.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.74.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.96.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.98.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.100.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.102.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.112.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.112.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.113.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.131.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.132.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.134.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.140.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.142.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.156.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.157.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.158.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.159.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.208.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.209.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.210.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.211.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.212.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.213.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.214.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.215.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.216.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.12.218.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.12.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.14.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.24.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.26.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.65.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.68.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.70.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.72.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.80.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.81.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.82.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.83.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.88.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.90.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.92.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.96.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.97.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.98.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.99.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.100.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.101.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.102.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.103.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.104.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.105.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.106.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.107.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.108.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.109.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.110.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.111.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.112.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.113.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.114.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.115.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.116.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.117.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.118.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.119.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.120.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.121.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.122.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.123.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.124.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.125.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.126.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.127.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.130.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.132.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.134.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.146.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.160.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.161.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.198.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.200.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.204.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.206.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.212.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.244.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.248.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.252.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.13.254.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.16.105.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 154.17.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.94.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.157.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.188.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.248.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.250.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.252.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.17.255.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.0.0/15 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.152.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.153.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.156.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.157.0/24 v4 | no ROA | 18 | 34549174 | 2026-09-18 |
| 154.18.158.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.159.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.160.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.171.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.178.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.179.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.198.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.209.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.18.226.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 154.18.254.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.19.44.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.19.44.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.19.45.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.19.47.0/24 v4 | no ROA | 20 | 58057174 | 2026-09-18 |
| 154.21.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.8.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.10.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.14.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.20.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.24.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.26.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 154.21.31.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |