AS174 Cogent Communications, LLC 🇺🇸 US
Announcing 4,413 prefixes, seen at the RIS collectors.
IPv4 prefixes
3,884
37,576,704 (146,784 × /24)
IPv6 prefixes
529
58 × /32
Upstreams
82
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
6,424
transit customers observed
Customer cone
65,507
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
4,413 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 208.71.88.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.77.0.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.77.2.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.79.12.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.80.220.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.81.128.0/21 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 208.87.19.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.10.119.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.14.0.0/16 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.14.253.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.17.96.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.39.20.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.39.26.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.41.192.0/18 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.44.64.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.51.94.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.61.0.0/17 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.70.240.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.105.132.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.107.195.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.115.0.0/17 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.127.202.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.137.176.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.146.0.0/17 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.146.36.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 209.146.42.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 209.146.100.0/22 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 209.146.122.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 209.206.126.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 209.222.48.0/20 v4 | RPKI invalid | 16 | 58057174 | 2026-10-08 |
| 209.227.78.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.227.79.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 209.236.214.0/23 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 212.20.128.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 212.20.151.0/24 v4 | no ROA | 41 | 34549174 | 2026-09-18 |
| 212.134.168.0/23 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 213.146.160.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 213.146.188.0/23 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 213.178.143.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 213.206.128.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.28.0.0/15 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.28.9.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 216.29.55.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 216.29.200.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 216.55.80.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.74.111.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.75.90.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.75.92.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.75.93.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.131.104.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.131.106.0/23 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.137.128.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.20.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.21.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.22.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.23.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.24.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.29.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.152.30.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.163.136.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.163.189.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.168.64.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.168.65.0/24 v4 | no ROA | 12 | 22652174 | 2026-09-18 |
| 216.170.109.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.173.88.0/23 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.173.92.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.173.93.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.177.96.0/19 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.183.248.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.183.251.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.185.56.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.205.84.0/23 v4 | no ROA | 40 | 34549174 | 2026-09-24 |
| 216.211.204.0/22 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 216.226.67.0/24 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 216.229.128.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.67.78.0/23 v4 | RPKI valid | 40 | 34549174 | 2026-09-18 |
| 217.71.112.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.71.113.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.118.224.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.147.96.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.147.128.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.149.32.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.151.240.0/20 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 217.151.243.0/24 v4 | no ROA | 40 | 34549174 | 2026-09-18 |
| 2001:550::/32 v6 | no ROA | 32 | 34549174 | 2026-09-18 |
| 2001:550:1:c::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1:100::/56 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1:300::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1:301::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1:304::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:100:8::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:100:9::/64 v6 | no ROA | 4 | 20205174 | 2026-09-20 |
| 2001:550:104::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:107::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:108::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:201::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:202::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:203::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:204::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:205::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:206::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:209::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:20a::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:20b::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:302::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:303::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:304::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:306::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:307::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:308::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:309::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:30c::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:30d::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:402::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:407::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:408::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:40a::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:40b::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:40c::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:40e::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:40f::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:410::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:412::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:602::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:606::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:702::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:800:2::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:800:100::/56 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:801::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:802::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:803::/51 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:803:2000::/51 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:803:6000::/51 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:804::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:805::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:905::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:906::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:908::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:909::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:90b::/48 v6 | no ROA | 8 | 50300174 | 2026-10-01 |
| 2001:550:911::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:912::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:913::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a00::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a02::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a04::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a06::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a07::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a09::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a0a::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a0b::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a0c::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a0d::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a0e::/49 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:a0e:8000::/49 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:a0f::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a10::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a11::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a12::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a13::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a15::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a16::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a19::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a1a::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a1b::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a1c::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a1d::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a20::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a21::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a22::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a23::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a24::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a25::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a26::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a28::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:a29::/48 v6 | no ROA | 8 | 50300174 | 2026-10-08 |
| 2001:550:a2a::/48 v6 | no ROA | 8 | 50300174 | 2026-10-08 |
| 2001:550:b01::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c01::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c02::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c03::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c04::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c05::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:c07::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:d00::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:d02::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:d04::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:d08::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:e02::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:e05::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:f00::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:f02::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1100::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1200:3::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1202::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1202:1::/64 v6 | no ROA | 4 | 20205174 | 2026-09-18 |
| 2001:550:1204::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1205::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1207::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |
| 2001:550:1208::/48 v6 | no ROA | 8 | 50300174 | 2026-09-18 |