AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,520 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,992
37,641,984 (147,039 × /24)
IPv6 prefixes
528
58 × /32
Upstreams
86
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,415
transit customers observed
Customer cone
65,614
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
4,520 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.188.166.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.167.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.168.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.169.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.170.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.171.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.172.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.173.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.174.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.188.175.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.190.128.0/22 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.132.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.134.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.150.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.190.151.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.180.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.182.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.190.183.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.191.45.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.191.230.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.196.158.0/24 v4 | no ROA | 32 | 34549174 | 2026-09-18 |
| 38.196.184.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.196.208.0/21 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.208.0/24 v4 | no ROA | 37 | 34549174 | 2026-09-18 |
| 38.196.209.0/24 v4 | no ROA | 37 | 34549174 | 2026-09-18 |
| 38.196.210.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.211.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.212.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.213.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.214.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.196.215.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.200.23.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.203.0.0/22 v4 | no ROA | 18 | 58057174 | 2026-09-18 |
| 38.203.0.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.203.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.203.2.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.203.3.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.204.0.0/22 v4 | no ROA | 18 | 58057174 | 2026-09-18 |
| 38.204.0.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.204.1.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.204.2.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.204.3.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.0.0/18 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.144.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.145.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.146.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.147.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.148.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.149.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.150.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.151.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.152.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.153.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.154.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.155.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.156.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.157.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.158.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.207.159.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.209.64.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.209.112.0/20 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.210.120.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.210.120.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.210.121.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.28.0/22 v4 | no ROA | 38 | 34549174 | 2026-09-18 |
| 38.211.28.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.29.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.30.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.31.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.47.0/24 v4 | no ROA | 18 | 58057174 | 2026-09-18 |
| 38.211.50.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.211.100.0/24 v4 | no ROA | 18 | 34549174 | 2026-09-18 |
| 38.211.125.0/24 v4 | no ROA | 35 | 34549174 | 2026-09-18 |
| 38.211.251.0/24 v4 | RPKI invalid | 15 | 58057174 | 2026-09-18 |
| 38.211.252.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.213.24.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.26.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.27.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.28.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.29.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.30.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.31.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.33.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.35.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.36.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.38.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.39.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.40.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.41.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.42.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.43.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.44.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.45.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.46.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.47.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.48.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.50.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.52.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.54.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.55.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.58.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.59.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.64.0/21 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.65.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.74.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.76.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.78.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.81.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.82.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.83.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.84.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.85.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.86.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.87.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.88.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.89.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.91.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.92.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.93.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.94.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.95.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.96.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.97.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.98.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.99.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.100.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.101.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.102.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.103.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.104.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.105.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.106.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.107.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.108.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.109.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.110.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.111.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.121.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.122.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.123.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.124.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.125.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.126.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.127.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.147.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.148.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.149.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.150.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.151.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.157.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.163.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.181.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.182.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.183.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.184.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.189.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.190.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.191.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.192.0/19 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.196.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.197.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.200.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.201.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.202.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.203.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.204.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.205.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.206.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.207.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.208.0/23 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.208.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.211.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.212.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.214.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.215.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.216.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.217.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.218.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.219.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.220.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.221.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.222.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.223.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.224.0/19 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.248.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.249.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.250.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.251.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.252.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.253.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.254.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.213.255.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.216.220.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.221.129.0/24 v4 | no ROA | 12 | 37721174 | 2026-09-18 |
| 38.224.18.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.21.0/24 v4 | RPKI invalid | 15 | 58057174 | 2026-09-18 |
| 38.224.50.0/23 v4 | no ROA | 38 | 34549174 | 2026-09-18 |
| 38.224.50.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.51.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.192.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |