AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,424 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,892
37,709,824 (147,304 × /24)
IPv6 prefixes
532
58 × /32
Upstreams
84
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,456
transit customers observed
Customer cone
69,084
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
3,892 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 2.58.4.0/22 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 5.83.219.0/24 v4 | RPKI valid | 1 | 33331257174 | 2026-09-18 |
| 5.157.72.0/21 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 8.24.64.0/23 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 8.24.72.0/23 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 16.5.51.0/24 v4 | RPKI invalid | 4 | 58057174 | 2026-10-29 |
| 16.5.118.0/23 v4 | RPKI valid | 26 | 58057174 | 2026-10-01 |
| 16.5.168.0/23 v4 | RPKI valid | 29 | 34549174 | 2026-09-18 |
| 16.5.170.0/23 v4 | RPKI valid | 29 | 34549174 | 2026-09-18 |
| 16.5.198.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-29 |
| 23.26.130.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.135.116.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.135.124.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.141.196.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.141.204.0/24 v4 | RPKI valid | 27 | 34549174 | 2026-09-18 |
| 23.141.212.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.141.228.0/24 v4 | RPKI valid | 27 | 34549174 | 2026-09-18 |
| 23.142.100.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.144.28.0/24 v4 | RPKI valid | 27 | 34549174 | 2026-09-18 |
| 23.144.60.0/24 v4 | RPKI valid | 27 | 34549174 | 2026-09-18 |
| 23.146.76.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.146.116.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.44.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.60.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.68.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.92.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.116.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.124.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.148.164.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.151.196.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.161.96.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 23.167.168.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-08 |
| 23.227.92.0/22 v4 | RPKI valid | 40 | 37721174 | 2026-09-18 |
| 23.234.144.0/22 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 23.237.93.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 37.34.88.0/21 v4 | RPKI invalid | 1 | 33331257174 | 2026-09-18 |
| 37.49.150.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 38.0.0.0/8 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.3.128.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.3.180.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.3.181.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.3.182.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.3.183.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.5.16.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.7.64.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.7.96.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.7.97.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.9.32.0/24 v4 | no ROA | 32 | 34549174 | 2026-09-18 |
| 38.9.33.0/24 v4 | no ROA | 1 | 33331257174 | 2026-09-29 |
| 38.9.210.0/23 v4 | no ROA | 32 | 34549174 | 2026-09-18 |
| 38.9.210.0/24 v4 | no ROA | 32 | 34549174 | 2026-09-18 |
| 38.9.211.0/24 v4 | no ROA | 33 | 34549174 | 2026-09-18 |
| 38.10.160.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.161.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.162.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.163.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.164.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.165.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.166.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.167.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.168.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.169.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.170.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.171.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.172.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.173.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.10.174.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.10.175.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.15.0.0/19 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.15.184.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.17.40.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.17.42.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.18.160.0/19 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.18.236.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.19.12.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.19.48.0/24 v4 | no ROA | 23 | 58057174 | 2026-09-18 |
| 38.19.172.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.19.208.0/24 v4 | RPKI invalid | 14 | 58057174 | 2026-10-13 |
| 38.19.209.0/24 v4 | RPKI invalid | 14 | 58057174 | 2026-10-13 |
| 38.19.210.0/24 v4 | RPKI invalid | 14 | 58057174 | 2026-10-13 |
| 38.19.211.0/24 v4 | RPKI invalid | 14 | 58057174 | 2026-10-13 |
| 38.19.214.0/24 v4 | no ROA | 29 | 34549174 | 2026-09-18 |
| 38.19.224.0/23 v4 | no ROA | 29 | 34549174 | 2026-09-18 |
| 38.19.224.0/24 v4 | no ROA | 38 | 34549174 | 2026-09-18 |
| 38.19.225.0/24 v4 | no ROA | 38 | 34549174 | 2026-09-18 |
| 38.19.234.0/23 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.19.234.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.19.235.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.19.236.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.19.237.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.19.251.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.20.130.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.20.138.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.20.139.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.20.160.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.20.228.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.21.64.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.21.65.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.21.66.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.21.67.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.21.124.0/22 v4 | no ROA | 36 | 34549174 | 2026-10-26 |
| 38.22.10.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.40.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.57.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.58.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.64.0/23 v4 | no ROA | 33 | 34549174 | 2026-10-08 |
| 38.22.64.0/24 v4 | no ROA | 39 | 34549174 | 2026-10-08 |
| 38.22.65.0/24 v4 | no ROA | 39 | 34549174 | 2026-10-08 |
| 38.22.66.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.74.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.75.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.76.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.78.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.110.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.124.0/24 v4 | no ROA | 32 | 34549174 | 2026-09-18 |
| 38.22.125.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.22.126.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.22.127.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.22.168.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.174.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.176.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-14 |
| 38.22.219.0/24 v4 | no ROA | 11 | 37721174 | 2026-09-18 |
| 38.22.230.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.22.232.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.27.0.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.27.8.0/21 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.27.16.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.27.39.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.27.111.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.29.171.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.29.174.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.29.200.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.29.223.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.29.232.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.29.233.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.29.234.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.29.235.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.34.0.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.34.16.0/20 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.39.96.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.97.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.98.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.99.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.100.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.101.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.102.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.103.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.104.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.105.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.106.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.107.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.108.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.109.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.110.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.111.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.112.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.113.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.114.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.115.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.116.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.117.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.118.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.119.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.120.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.121.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.122.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.123.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.124.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.125.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.126.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.39.127.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.41.123.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.44.20.0/22 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.44.20.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.44.21.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.44.22.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.44.23.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.45.64.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.69.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.71.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.72.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.95.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.132.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.134.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.137.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.138.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.140.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.145.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.150.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.155.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.162.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.184.0/22 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.216.0/23 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 38.45.216.0/24 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 38.45.217.0/24 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 38.45.218.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.226.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.227.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.240.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.45.242.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |