AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,356 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,827
37,670,912 (147,152 × /24)
IPv6 prefixes
529
58 × /32
Upstreams
89
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,442
transit customers observed
Customer cone
67,150
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
3,827 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.96.44.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.96.45.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.96.46.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.96.47.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.96.70.0/24 v4 | no ROA | 12 | 37721174 | 2026-10-27 |
| 38.96.150.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.156.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.161.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.164.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.166.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.179.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.185.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.193.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-24 |
| 38.96.194.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.205.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.96.242.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.3.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.6.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.17.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.54.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.97.59.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.77.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.78.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.85.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.88.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-26 |
| 38.97.89.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-26 |
| 38.97.115.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-23 |
| 38.97.118.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.125.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.132.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.208.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.232.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.234.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.240.0/24 v4 | no ROA | 39 | 34549174 | 2026-10-23 |
| 38.97.246.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.97.248.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.4.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.12.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.22.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.32.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.33.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.39.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.46.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.48.0/24 v4 | no ROA | 1 | 2162858280174 | 2026-11-10 |
| 38.98.79.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.114.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.165.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.168.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.174.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.178.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.179.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.182.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.188.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.194.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.206.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.216.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.220.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.227.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.239.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.241.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.249.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.98.250.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.2.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.19.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.21.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.28.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.86.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.93.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.95.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.99.98.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.100.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.110.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.113.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.118.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.119.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.120.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.121.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.126.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.139.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.142.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.154.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.190.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.225.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.99.238.0/24 v4 | no ROA | 24 | 58057174 | 2026-11-10 |
| 38.99.239.0/24 v4 | no ROA | 24 | 58057174 | 2026-11-10 |
| 38.99.248.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.4.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.12.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.15.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.39.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.51.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.104.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.105.0/24 v4 | no ROA | 9 | 37721174 | 2026-09-18 |
| 38.100.112.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.132.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.164.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.173.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.180.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.183.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.201.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.202.0/24 v4 | no ROA | 22 | 58057174 | 2026-11-10 |
| 38.100.215.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.230.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.100.252.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.9.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.23.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.24.0/22 v4 | no ROA | 1 | 50300174 | 2026-09-18 |
| 38.101.28.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.39.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.101.40.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.44.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.55.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.77.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.115.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.116.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.120.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.122.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.123.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.124.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.128.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.158.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.167.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.172.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.175.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.177.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.191.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.209.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.223.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.229.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.230.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.234.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.247.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.101.254.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.16.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.40.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.44.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.53.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.54.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.68.0/24 v4 | no ROA | 1 | 2162858280174 | 2026-11-10 |
| 38.102.96.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.98.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.101.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.104.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.144.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.145.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.149.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.164.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.188.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.226.0/23 v4 | no ROA | 13 | 37721174 | 2026-10-19 |
| 38.102.238.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.240.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.247.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.102.250.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-16 |
| 38.103.41.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.92.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.93.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.94.0/24 v4 | no ROA | 38 | 34549174 | 2026-09-18 |
| 38.103.97.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.139.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.144.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.149.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.151.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.166.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-01 |
| 38.103.167.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.193.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.224.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.225.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.226.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.232.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.241.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.243.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.244.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.245.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.246.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.247.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.103.252.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.3.0/24 v4 | no ROA | 1 | 21628582806762174 | 2026-11-10 |
| 38.105.9.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.11.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.64.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.66.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.69.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.77.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.78.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.79.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.84.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.94.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.100.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.118.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.122.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.134.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.137.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.148.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.160.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.195.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.202.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.218.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.105.224.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |