Prefixes
3,918 · 446
IPv4 · IPv6
Network
AS174
T1Cogent Communications, LLC
Cogent Communications announces 3,918 IPv4 prefixes (36.2M addresses) and 446 IPv6 prefixes from the United States. 11% of them are covered by valid RPKI records.
Address space
36.2M
IPv4 addresses · 3.3M IPv6 /48s
RPKI
11% valid12 invalid · 3,888 without a record
Peering
Doesn't peer
0 exchanges · 816 facilities
Where it is
Details
Network
- Name
- Cogent Communications, LLC
- Type
- NSP
- Country
- United States
- Website
- cogentco.com
- Traffic
- 100+Tbps
Connectivity
Routing security
- ASPAAn RPKI record listing the only networks allowed to be its upstream providers, so routers can reject leaked or forged paths.
- AS0
- RPKI coverageShare of its announcements that a signed record (ROA) authorizes.
- 464 of 4,364 valid
- IncidentsPossible BGP hijacks (high-confidence detections) and route leaks involving this network in the last 30 days, from Cloudflare Radar.
- 6 hijacks of its prefixes9 hijacks by this network50 route leaks
Largest prefixes
IPv4
3,918- 38.0.0.0/8No ROA
- 208.0.0.0/11No ROA
- 63.160.0.0/12No ROA
- 154.48.0.0/12No ROA
- 65.160.0.0/13No ROA
- 154.24.0.0/13No ROA
- 154.40.0.0/13No ROA
- 205.240.0.0/13No ROA
- 65.168.0.0/14No ROA
- 149.92.0.0/14No ROA
- 154.36.0.0/14No ROA
- 199.0.0.0/14No ROA
- 204.4.0.0/14No ROA
- 204.180.0.0/14No ROA
- 204.204.0.0/14RPKI valid
- 204.212.0.0/14No ROA
- 204.240.0.0/14No ROA
- 204.248.0.0/14No ROA
- 205.160.0.0/14No ROA
- 206.4.0.0/14No ROA
- 206.104.0.0/14No ROA
- 206.228.0.0/14No ROA
- 206.232.0.0/14No ROA
- 207.12.0.0/14No ROA
IPv6
446- 2600::/28No ROA
- 2600::/29No ROA
- 2a06:f980::/29No ROA
- 2a0e:78c0::/29No ROA
- 2001:550::/32No ROA
- 2001:978::/32No ROA
- 2403:a800::/32No ROA
- 2605:6900::/32No ROA
- 2605:a680::/32No ROA
- 2804:5330::/32No ROA
- 2a02:bf8::/32No ROA
- 2a0c:9e06::/32RPKI valid