AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,526 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,996
37,752,064 (147,469 × /24)
IPv6 prefixes
530
58 × /32
Upstreams
84
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,441
transit customers observed
Customer cone
66,659
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
4,526 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.213.83.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.84.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.85.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.86.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.87.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.88.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.89.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.91.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.92.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.93.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.94.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.95.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.96.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.97.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.98.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.99.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.100.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.101.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.102.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.103.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.104.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.105.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.106.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.107.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.108.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.109.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.110.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.111.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.121.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.122.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.123.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.124.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.125.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.126.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.127.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.130.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.133.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-28 |
| 38.213.135.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-28 |
| 38.213.136.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-28 |
| 38.213.139.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.140.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.141.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.142.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.143.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.144.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.146.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.147.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.148.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.149.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.150.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.151.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.153.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.155.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.157.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.159.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.160.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.161.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.162.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.163.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.164.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.165.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.166.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.167.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.168.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.169.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.170.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.171.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.172.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.173.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.174.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.175.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.181.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.182.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.183.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.184.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.185.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.186.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.187.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.188.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-09 |
| 38.213.189.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.190.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.191.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.192.0/19 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.195.0/24 v4 | no ROA | 13 | 37721174 | 2026-10-23 |
| 38.213.196.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.197.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.200.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.201.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.202.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.203.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.204.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.205.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.206.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.207.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.208.0/23 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.208.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.211.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.212.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.214.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.215.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.216.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.217.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.218.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.219.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.220.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.221.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.222.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.223.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.224.0/19 v4 | no ROA | 13 | 37721174 | 2026-10-20 |
| 38.213.248.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.249.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.250.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.251.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.252.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.253.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.254.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.213.255.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.216.220.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.221.129.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.224.18.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.224.21.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.224.28.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-05 |
| 38.224.50.0/23 v4 | no ROA | 37 | 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 |
| 38.224.193.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.194.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.195.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.196.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.197.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.198.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.199.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.200.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.201.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.202.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.203.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.204.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.205.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.206.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.207.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.208.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.224.209.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.225.66.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.225.85.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.225.91.0/24 v4 | no ROA | 22 | 58057174 | 2026-09-18 |
| 38.225.99.0/24 v4 | no ROA | 1 | 21324190023356174 | 2026-09-18 |
| 38.225.110.0/24 v4 | no ROA | 31 | 34549174 | 2026-09-18 |
| 38.225.198.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.225.204.0/24 v4 | no ROA | 14 | 58057174 | 2026-10-08 |
| 38.225.205.0/24 v4 | no ROA | 14 | 58057174 | 2026-10-08 |
| 38.225.206.0/24 v4 | no ROA | 14 | 58057174 | 2026-10-08 |
| 38.225.207.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-08 |
| 38.226.4.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.226.16.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 38.226.44.0/22 v4 | no ROA | 41 | 34549174 | 2026-10-05 |
| 38.226.44.0/24 v4 | no ROA | 41 | 34549174 | 2026-10-05 |
| 38.226.45.0/24 v4 | no ROA | 36 | 34549174 | 2026-10-05 |
| 38.226.46.0/24 v4 | no ROA | 37 | 34549174 | 2026-10-05 |
| 38.226.47.0/24 v4 | no ROA | 37 | 34549174 | 2026-10-05 |
| 38.226.118.0/24 v4 | RPKI valid | 41 | 34549174 | 2026-09-18 |
| 38.226.124.0/24 v4 | no ROA | 37 | 34549174 | 2026-09-18 |
| 38.226.201.0/24 v4 | no ROA | 37 | 34549174 | 2026-09-18 |
| 38.226.202.0/23 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.226.202.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.226.203.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 38.226.206.0/23 v4 | no ROA | 31 | 34549174 | 2026-10-13 |
| 38.226.206.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-13 |
| 38.226.207.0/24 v4 | no ROA | 40 | 34549174 | 2026-10-13 |
| 38.226.216.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 38.226.217.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-23 |
| 38.226.218.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.226.219.0/24 v4 | no ROA | 39 | 34549174 | 2026-09-18 |
| 38.232.69.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.234.38.0/24 v4 | no ROA | 13 | 37721174 | 2026-09-18 |
| 38.236.80.0/24 v4 | no ROA | 1 | 21324190023356174 | 2026-09-23 |
| 38.236.81.0/24 v4 | no ROA | 1 | 20409220766291693528042301673526868952663174 | 2026-10-02 |
| 38.236.128.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.128.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.129.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.130.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.131.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.132.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.133.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.134.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.135.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.136.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.137.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.138.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.139.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.140.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.141.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.142.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.143.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.144.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.145.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.146.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.147.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.148.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 38.236.149.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |