AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,364 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,833
37,673,216 (147,161 × /24)
IPv6 prefixes
531
58 × /32
Upstreams
89
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,445
transit customers observed
Customer cone
67,198
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
3,833 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 193.235.207.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 194.5.64.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 194.103.42.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 194.124.69.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 195.78.54.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 195.238.96.0/24 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 198.1.196.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 198.8.57.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.33.132.0/22 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.136.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.143.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.144.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.145.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.148.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.149.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.33.152.0/22 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.34.68.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.34.77.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.65.204.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.67.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.67.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.68.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.68.195.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.70.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.90.73.0/24 v4 | no ROA | 29 | 37721174 | 2026-10-06 |
| 198.100.16.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.145.121.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.147.245.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.153.70.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.168.229.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 198.168.230.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 198.173.213.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 198.176.215.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.181.219.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 198.242.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.0.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.1.24.0/21 v4 | no ROA | 39 | 34549174 | 2026-10-24 |
| 199.2.102.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.3.194.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.4.110.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 199.11.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.11.2.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.11.3.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.11.21.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.15.89.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.16.106.0/24 v4 | no ROA | 14 | 58057174 | 2026-09-18 |
| 199.20.54.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.29.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.33.161.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.58.206.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.89.2.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 199.89.3.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 199.97.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.98.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.100.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.164.26.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.164.191.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 199.246.34.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 199.249.170.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.249.188.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.254.0.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.254.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.254.6.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 199.254.7.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 202.52.112.0/20 v4 | RPKI valid | 42 | 34549174 | 2026-09-18 |
| 203.98.192.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 203.185.184.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 203.222.32.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 203.222.160.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.4.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.6.136.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 204.11.144.0/22 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 204.15.191.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-10-08 |
| 204.15.207.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.17.132.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.29.160.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.29.213.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 204.62.192.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.87.32.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.87.34.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.87.41.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.87.62.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.94.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.94.104.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.96.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.117.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.118.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.118.31.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.120.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.120.173.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.122.9.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.157.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.157.66.0/23 v4 | no ROA | 1 | 21628582806762174 | 2026-11-10 |
| 204.157.66.0/24 v4 | no ROA | 1 | 21628582806762174 | 2026-11-10 |
| 204.157.67.0/24 v4 | no ROA | 1 | 21628582806762174 | 2026-11-10 |
| 204.157.243.0/24 v4 | no ROA | 42 | 34549174 | 2026-10-26 |
| 204.157.244.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.170.35.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 204.180.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.180.153.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.80.0/20 v4 | no ROA | 31 | 37721174 | 2026-09-18 |
| 204.183.80.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.81.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.82.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.83.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.84.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.85.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.86.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.87.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.88.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.89.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.90.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.91.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.92.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.93.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.94.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.95.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.183.220.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.194.98.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.204.0.0/14 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 204.212.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.212.40.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.212.166.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.217.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.217.176.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 204.217.213.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 204.217.214.0/23 v4 | no ROA | 1 | 2162858280174 | 2026-11-10 |
| 204.225.232.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 204.233.235.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 204.240.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.248.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 204.250.160.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.160.0.0/14 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.161.64.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.161.222.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.162.152.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.162.160.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.163.195.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.64.0/18 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.76.0/24 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 205.164.115.0/24 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 205.164.117.0/24 v4 | no ROA | 42 | 34549174 | 2026-09-18 |
| 205.164.119.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.128.0/17 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.220.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.221.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.164.240.0/24 v4 | RPKI invalid | 7 | 58057174 | 2026-09-18 |
| 205.172.24.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.175.206.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.175.239.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.64.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.65.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.66.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.67.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.68.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.69.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.70.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.71.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.72.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.73.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.74.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.75.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.76.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.77.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.78.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.79.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.80.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.81.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.82.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.83.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.84.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.85.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.86.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.87.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.88.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.89.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.90.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.91.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.92.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.93.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.94.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.95.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.198.104.0/23 v4 | no ROA | 13 | 37721174 | 2026-10-31 |
| 205.198.106.0/23 v4 | no ROA | 13 | 37721174 | 2026-10-31 |
| 205.210.140.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 205.215.0.0/18 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.220.250.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.240.0.0/13 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.241.51.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.243.61.0/24 v4 | no ROA | 1 | 21628582806762174 | 2026-11-10 |
| 205.246.165.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 205.254.192.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.0.0.0/15 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.0.128.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.0.129.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.0.130.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.0.131.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.2.0.0/16 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 206.3.32.0/19 v4 | no ROA | 41 | 34549174 | 2026-09-18 |