IP ranges
Cogent IP ranges
Every IPv4 and IPv6 range that Cogent (AS174) currently announces on the internet, with CIDR and start/end IP, free to download as TXT or CSV. Data snapshot: 2026-11-02.
Cogent announces 3,879 IPv4 prefixes covering 36,320,256 addresses, and 529 IPv6 prefixes, through AS174. The lists below are a snapshot of 2026-11-02 taken from the public BGP routing table, sorted by address and kept as announced.
ASNAS174
IPv4 prefixes3,879
IPv4 addresses36,320,256Overlaps are counted once
IPv6 prefixes529
Data snapshot
Download the complete list
The complete list has 4,408 ranges (IPv4 and IPv6). TXT has one CIDR per line; CSV has the columns cidr, version, start_ip, end_ip and addresses.
Cogent IPv4 ranges
| CIDR | Start IP – end IP | Addresses |
|---|---|---|
| 2.58.4.0/22 | 2.58.4.0–2.58.7.255 | 1,024 |
| 5.83.219.0/24 | 5.83.219.0–5.83.219.255 | 256 |
| 5.157.72.0/21 | 5.157.72.0–5.157.79.255 | 2,048 |
| 8.24.64.0/23 | 8.24.64.0–8.24.65.255 | 512 |
| 8.24.72.0/23 | 8.24.72.0–8.24.73.255 | 512 |
| 16.5.51.0/24 | 16.5.51.0–16.5.51.255 | 256 |
| 16.5.118.0/23 | 16.5.118.0–16.5.119.255 | 512 |
| 16.5.168.0/23 | 16.5.168.0–16.5.169.255 | 512 |
| 16.5.170.0/23 | 16.5.170.0–16.5.171.255 | 512 |
| 16.5.198.0/24 | 16.5.198.0–16.5.198.255 | 256 |
| 23.26.130.0/24 | 23.26.130.0–23.26.130.255 | 256 |
| 23.135.116.0/24 | 23.135.116.0–23.135.116.255 | 256 |
| 23.135.124.0/24 | 23.135.124.0–23.135.124.255 | 256 |
| 23.141.196.0/24 | 23.141.196.0–23.141.196.255 | 256 |
| 23.141.204.0/24 | 23.141.204.0–23.141.204.255 | 256 |
| 23.141.212.0/24 | 23.141.212.0–23.141.212.255 | 256 |
| 23.141.228.0/24 | 23.141.228.0–23.141.228.255 | 256 |
| 23.142.100.0/24 | 23.142.100.0–23.142.100.255 | 256 |
| 23.144.28.0/24 | 23.144.28.0–23.144.28.255 | 256 |
| 23.144.60.0/24 | 23.144.60.0–23.144.60.255 | 256 |
| 23.146.76.0/24 | 23.146.76.0–23.146.76.255 | 256 |
| 23.146.116.0/24 | 23.146.116.0–23.146.116.255 | 256 |
| 23.148.44.0/24 | 23.148.44.0–23.148.44.255 | 256 |
| 23.148.60.0/24 | 23.148.60.0–23.148.60.255 | 256 |
| 23.148.68.0/24 | 23.148.68.0–23.148.68.255 | 256 |
| 23.148.92.0/24 | 23.148.92.0–23.148.92.255 | 256 |
| 23.148.116.0/24 | 23.148.116.0–23.148.116.255 | 256 |
| 23.148.124.0/24 | 23.148.124.0–23.148.124.255 | 256 |
| 23.148.164.0/24 | 23.148.164.0–23.148.164.255 | 256 |
| 23.151.196.0/24 | 23.151.196.0–23.151.196.255 | 256 |
| 23.161.96.0/24 | 23.161.96.0–23.161.96.255 | 256 |
| 23.167.168.0/24 | 23.167.168.0–23.167.168.255 | 256 |
| 23.227.92.0/22 | 23.227.92.0–23.227.95.255 | 1,024 |
| 23.234.144.0/22 | 23.234.144.0–23.234.147.255 | 1,024 |
| 23.237.93.0/24 | 23.237.93.0–23.237.93.255 | 256 |
| 37.34.88.0/21 | 37.34.88.0–37.34.95.255 | 2,048 |
| 37.49.150.0/24 | 37.49.150.0–37.49.150.255 | 256 |
| 38.0.0.0/8 | 38.0.0.0–38.255.255.255 | 16,777,216 |
| 38.3.128.0/24 | 38.3.128.0–38.3.128.255 | 256 |
| 38.3.180.0/24 | 38.3.180.0–38.3.180.255 | 256 |
| 38.3.181.0/24 | 38.3.181.0–38.3.181.255 | 256 |
| 38.3.182.0/24 | 38.3.182.0–38.3.182.255 | 256 |
| 38.3.183.0/24 | 38.3.183.0–38.3.183.255 | 256 |
| 38.5.16.0/24 | 38.5.16.0–38.5.16.255 | 256 |
| 38.7.64.0/20 | 38.7.64.0–38.7.79.255 | 4,096 |
| 38.7.96.0/24 | 38.7.96.0–38.7.96.255 | 256 |
| 38.7.97.0/24 | 38.7.97.0–38.7.97.255 | 256 |
| 38.9.32.0/24 | 38.9.32.0–38.9.32.255 | 256 |
| 38.9.33.0/24 | 38.9.33.0–38.9.33.255 | 256 |
| 38.9.210.0/23 | 38.9.210.0–38.9.211.255 | 512 |
| 38.9.210.0/24 | 38.9.210.0–38.9.210.255 | 256 |
| 38.9.211.0/24 | 38.9.211.0–38.9.211.255 | 256 |
| 38.10.160.0/24 | 38.10.160.0–38.10.160.255 | 256 |
| 38.10.161.0/24 | 38.10.161.0–38.10.161.255 | 256 |
| 38.10.162.0/24 | 38.10.162.0–38.10.162.255 | 256 |
| 38.10.163.0/24 | 38.10.163.0–38.10.163.255 | 256 |
| 38.10.164.0/24 | 38.10.164.0–38.10.164.255 | 256 |
| 38.10.165.0/24 | 38.10.165.0–38.10.165.255 | 256 |
| 38.10.166.0/24 | 38.10.166.0–38.10.166.255 | 256 |
| 38.10.167.0/24 | 38.10.167.0–38.10.167.255 | 256 |
| 38.10.168.0/24 | 38.10.168.0–38.10.168.255 | 256 |
| 38.10.169.0/24 | 38.10.169.0–38.10.169.255 | 256 |
| 38.10.170.0/24 | 38.10.170.0–38.10.170.255 | 256 |
| 38.10.171.0/24 | 38.10.171.0–38.10.171.255 | 256 |
| 38.10.172.0/24 | 38.10.172.0–38.10.172.255 | 256 |
| 38.10.173.0/24 | 38.10.173.0–38.10.173.255 | 256 |
| 38.10.174.0/24 | 38.10.174.0–38.10.174.255 | 256 |
| 38.10.175.0/24 | 38.10.175.0–38.10.175.255 | 256 |
| 38.15.0.0/19 | 38.15.0.0–38.15.31.255 | 8,192 |
| 38.15.184.0/21 | 38.15.184.0–38.15.191.255 | 2,048 |
| 38.17.40.0/23 | 38.17.40.0–38.17.41.255 | 512 |
| 38.17.42.0/23 | 38.17.42.0–38.17.43.255 | 512 |
| 38.18.160.0/19 | 38.18.160.0–38.18.191.255 | 8,192 |
| 38.18.236.0/22 | 38.18.236.0–38.18.239.255 | 1,024 |
| 38.19.12.0/24 | 38.19.12.0–38.19.12.255 | 256 |
| 38.19.48.0/24 | 38.19.48.0–38.19.48.255 | 256 |
| 38.19.172.0/22 | 38.19.172.0–38.19.175.255 | 1,024 |
| 38.19.208.0/24 | 38.19.208.0–38.19.208.255 | 256 |
| 38.19.209.0/24 | 38.19.209.0–38.19.209.255 | 256 |
| 38.19.210.0/24 | 38.19.210.0–38.19.210.255 | 256 |
| 38.19.211.0/24 | 38.19.211.0–38.19.211.255 | 256 |
| 38.19.214.0/24 | 38.19.214.0–38.19.214.255 | 256 |
| 38.19.224.0/23 | 38.19.224.0–38.19.225.255 | 512 |
| 38.19.224.0/24 | 38.19.224.0–38.19.224.255 | 256 |
| 38.19.225.0/24 | 38.19.225.0–38.19.225.255 | 256 |
| 38.19.234.0/23 | 38.19.234.0–38.19.235.255 | 512 |
| 38.19.234.0/24 | 38.19.234.0–38.19.234.255 | 256 |
| 38.19.235.0/24 | 38.19.235.0–38.19.235.255 | 256 |
| 38.19.236.0/24 | 38.19.236.0–38.19.236.255 | 256 |
| 38.19.237.0/24 | 38.19.237.0–38.19.237.255 | 256 |
| 38.19.251.0/24 | 38.19.251.0–38.19.251.255 | 256 |
| 38.20.130.0/23 | 38.20.130.0–38.20.131.255 | 512 |
| 38.20.138.0/24 | 38.20.138.0–38.20.138.255 | 256 |
| 38.20.139.0/24 | 38.20.139.0–38.20.139.255 | 256 |
| 38.20.160.0/20 | 38.20.160.0–38.20.175.255 | 4,096 |
| 38.20.228.0/24 | 38.20.228.0–38.20.228.255 | 256 |
| 38.21.64.0/24 | 38.21.64.0–38.21.64.255 | 256 |
| 38.21.65.0/24 | 38.21.65.0–38.21.65.255 | 256 |
| 38.21.66.0/24 | 38.21.66.0–38.21.66.255 | 256 |
| 38.21.67.0/24 | 38.21.67.0–38.21.67.255 | 256 |
| 38.21.124.0/22 | 38.21.124.0–38.21.127.255 | 1,024 |
| 38.22.10.0/24 | 38.22.10.0–38.22.10.255 | 256 |
| 38.22.40.0/24 | 38.22.40.0–38.22.40.255 | 256 |
| 38.22.57.0/24 | 38.22.57.0–38.22.57.255 | 256 |
| 38.22.58.0/24 | 38.22.58.0–38.22.58.255 | 256 |
| 38.22.64.0/23 | 38.22.64.0–38.22.65.255 | 512 |
| 38.22.64.0/24 | 38.22.64.0–38.22.64.255 | 256 |
| 38.22.65.0/24 | 38.22.65.0–38.22.65.255 | 256 |
| 38.22.66.0/24 | 38.22.66.0–38.22.66.255 | 256 |
| 38.22.74.0/24 | 38.22.74.0–38.22.74.255 | 256 |
| 38.22.75.0/24 | 38.22.75.0–38.22.75.255 | 256 |
| 38.22.76.0/23 | 38.22.76.0–38.22.77.255 | 512 |
| 38.22.78.0/24 | 38.22.78.0–38.22.78.255 | 256 |
| 38.22.110.0/24 | 38.22.110.0–38.22.110.255 | 256 |
| 38.22.124.0/24 | 38.22.124.0–38.22.124.255 | 256 |
| 38.22.125.0/24 | 38.22.125.0–38.22.125.255 | 256 |
| 38.22.126.0/24 | 38.22.126.0–38.22.126.255 | 256 |
| 38.22.127.0/24 | 38.22.127.0–38.22.127.255 | 256 |
| 38.22.168.0/24 | 38.22.168.0–38.22.168.255 | 256 |
| 38.22.174.0/24 | 38.22.174.0–38.22.174.255 | 256 |
| 38.22.176.0/24 | 38.22.176.0–38.22.176.255 | 256 |
| 38.22.219.0/24 | 38.22.219.0–38.22.219.255 | 256 |
| 38.22.230.0/24 | 38.22.230.0–38.22.230.255 | 256 |
| 38.22.232.0/21 | 38.22.232.0–38.22.239.255 | 2,048 |
| 38.27.0.0/24 | 38.27.0.0–38.27.0.255 | 256 |
| 38.27.8.0/21 | 38.27.8.0–38.27.15.255 | 2,048 |
| 38.27.16.0/20 | 38.27.16.0–38.27.31.255 | 4,096 |
| 38.27.39.0/24 | 38.27.39.0–38.27.39.255 | 256 |
| 38.27.111.0/24 | 38.27.111.0–38.27.111.255 | 256 |
| 38.29.171.0/24 | 38.29.171.0–38.29.171.255 | 256 |
| 38.29.174.0/24 | 38.29.174.0–38.29.174.255 | 256 |
| 38.29.200.0/23 | 38.29.200.0–38.29.201.255 | 512 |
| 38.29.223.0/24 | 38.29.223.0–38.29.223.255 | 256 |
| 38.29.232.0/24 | 38.29.232.0–38.29.232.255 | 256 |
| 38.29.233.0/24 | 38.29.233.0–38.29.233.255 | 256 |
| 38.29.234.0/24 | 38.29.234.0–38.29.234.255 | 256 |
| 38.29.235.0/24 | 38.29.235.0–38.29.235.255 | 256 |
| 38.34.0.0/20 | 38.34.0.0–38.34.15.255 | 4,096 |
| 38.34.16.0/20 | 38.34.16.0–38.34.31.255 | 4,096 |
| 38.39.96.0/24 | 38.39.96.0–38.39.96.255 | 256 |
| 38.39.97.0/24 | 38.39.97.0–38.39.97.255 | 256 |
| 38.39.98.0/24 | 38.39.98.0–38.39.98.255 | 256 |
| 38.39.99.0/24 | 38.39.99.0–38.39.99.255 | 256 |
| 38.39.100.0/24 | 38.39.100.0–38.39.100.255 | 256 |
| 38.39.101.0/24 | 38.39.101.0–38.39.101.255 | 256 |
| 38.39.102.0/24 | 38.39.102.0–38.39.102.255 | 256 |
| 38.39.103.0/24 | 38.39.103.0–38.39.103.255 | 256 |
| 38.39.104.0/24 | 38.39.104.0–38.39.104.255 | 256 |
| 38.39.105.0/24 | 38.39.105.0–38.39.105.255 | 256 |
| 38.39.106.0/24 | 38.39.106.0–38.39.106.255 | 256 |
| 38.39.107.0/24 | 38.39.107.0–38.39.107.255 | 256 |
| 38.39.108.0/24 | 38.39.108.0–38.39.108.255 | 256 |
| 38.39.109.0/24 | 38.39.109.0–38.39.109.255 | 256 |
| 38.39.110.0/24 | 38.39.110.0–38.39.110.255 | 256 |
| 38.39.111.0/24 | 38.39.111.0–38.39.111.255 | 256 |
| 38.39.112.0/24 | 38.39.112.0–38.39.112.255 | 256 |
| 38.39.113.0/24 | 38.39.113.0–38.39.113.255 | 256 |
| 38.39.114.0/24 | 38.39.114.0–38.39.114.255 | 256 |
| 38.39.115.0/24 | 38.39.115.0–38.39.115.255 | 256 |
| 38.39.116.0/24 | 38.39.116.0–38.39.116.255 | 256 |
| 38.39.117.0/24 | 38.39.117.0–38.39.117.255 | 256 |
| 38.39.118.0/24 | 38.39.118.0–38.39.118.255 | 256 |
| 38.39.119.0/24 | 38.39.119.0–38.39.119.255 | 256 |
| 38.39.120.0/24 | 38.39.120.0–38.39.120.255 | 256 |
| 38.39.121.0/24 | 38.39.121.0–38.39.121.255 | 256 |
| 38.39.122.0/24 | 38.39.122.0–38.39.122.255 | 256 |
| 38.39.123.0/24 | 38.39.123.0–38.39.123.255 | 256 |
| 38.39.124.0/24 | 38.39.124.0–38.39.124.255 | 256 |
| 38.39.125.0/24 | 38.39.125.0–38.39.125.255 | 256 |
| 38.39.126.0/24 | 38.39.126.0–38.39.126.255 | 256 |
| 38.39.127.0/24 | 38.39.127.0–38.39.127.255 | 256 |
| 38.41.123.0/24 | 38.41.123.0–38.41.123.255 | 256 |
| 38.44.20.0/22 | 38.44.20.0–38.44.23.255 | 1,024 |
| 38.44.20.0/24 | 38.44.20.0–38.44.20.255 | 256 |
| 38.44.21.0/24 | 38.44.21.0–38.44.21.255 | 256 |
| 38.44.22.0/24 | 38.44.22.0–38.44.22.255 | 256 |
| 38.44.23.0/24 | 38.44.23.0–38.44.23.255 | 256 |
| 38.45.64.0/22 | 38.45.64.0–38.45.67.255 | 1,024 |
| 38.45.69.0/24 | 38.45.69.0–38.45.69.255 | 256 |
| 38.45.71.0/24 | 38.45.71.0–38.45.71.255 | 256 |
| 38.45.72.0/24 | 38.45.72.0–38.45.72.255 | 256 |
| 38.45.95.0/24 | 38.45.95.0–38.45.95.255 | 256 |
| 38.45.132.0/24 | 38.45.132.0–38.45.132.255 | 256 |
| 38.45.134.0/23 | 38.45.134.0–38.45.135.255 | 512 |
| 38.45.137.0/24 | 38.45.137.0–38.45.137.255 | 256 |
| 38.45.138.0/23 | 38.45.138.0–38.45.139.255 | 512 |
| 38.45.140.0/24 | 38.45.140.0–38.45.140.255 | 256 |
| 38.45.145.0/24 | 38.45.145.0–38.45.145.255 | 256 |
| 38.45.150.0/23 | 38.45.150.0–38.45.151.255 | 512 |
| 38.45.155.0/24 | 38.45.155.0–38.45.155.255 | 256 |
| 38.45.162.0/24 | 38.45.162.0–38.45.162.255 | 256 |
| 38.45.184.0/22 | 38.45.184.0–38.45.187.255 | 1,024 |
| 38.45.216.0/23 | 38.45.216.0–38.45.217.255 | 512 |
| 38.45.216.0/24 | 38.45.216.0–38.45.216.255 | 256 |
| 38.45.217.0/24 | 38.45.217.0–38.45.217.255 | 256 |
| 38.45.218.0/23 | 38.45.218.0–38.45.219.255 | 512 |
| 38.45.226.0/24 | 38.45.226.0–38.45.226.255 | 256 |
| 38.45.227.0/24 | 38.45.227.0–38.45.227.255 | 256 |
| 38.45.240.0/23 | 38.45.240.0–38.45.241.255 | 512 |
| 38.45.242.0/24 | 38.45.242.0–38.45.242.255 | 256 |
| 38.45.252.0/24 | 38.45.252.0–38.45.252.255 | 256 |
| 38.46.24.0/23 | 38.46.24.0–38.46.25.255 | 512 |
| 38.46.26.0/23 | 38.46.26.0–38.46.27.255 | 512 |
| 38.46.44.0/22 | 38.46.44.0–38.46.47.255 | 1,024 |
| 38.46.80.0/22 | 38.46.80.0–38.46.83.255 | 1,024 |
| 38.46.128.0/24 | 38.46.128.0–38.46.128.255 | 256 |
| 38.46.148.0/24 | 38.46.148.0–38.46.148.255 | 256 |
| 38.46.156.0/24 | 38.46.156.0–38.46.156.255 | 256 |
| 38.46.157.0/24 | 38.46.157.0–38.46.157.255 | 256 |
| 38.46.168.0/22 | 38.46.168.0–38.46.171.255 | 1,024 |
| 38.46.200.0/24 | 38.46.200.0–38.46.200.255 | 256 |
| 38.46.206.0/23 | 38.46.206.0–38.46.207.255 | 512 |
| 38.46.224.0/22 | 38.46.224.0–38.46.227.255 | 1,024 |
| 38.46.228.0/22 | 38.46.228.0–38.46.231.255 | 1,024 |
| 38.46.232.0/22 | 38.46.232.0–38.46.235.255 | 1,024 |
| 38.46.232.0/24 | 38.46.232.0–38.46.232.255 | 256 |
| 38.46.233.0/24 | 38.46.233.0–38.46.233.255 | 256 |
| 38.46.234.0/24 | 38.46.234.0–38.46.234.255 | 256 |
| 38.46.235.0/24 | 38.46.235.0–38.46.235.255 | 256 |
| 38.50.164.0/24 | 38.50.164.0–38.50.164.255 | 256 |
| 38.51.190.0/24 | 38.51.190.0–38.51.190.255 | 256 |
| 38.51.191.0/24 | 38.51.191.0–38.51.191.255 | 256 |
| 38.51.227.0/24 | 38.51.227.0–38.51.227.255 | 256 |
| 38.51.236.0/24 | 38.51.236.0–38.51.236.255 | 256 |
| 38.51.237.0/24 | 38.51.237.0–38.51.237.255 | 256 |
| 38.51.238.0/24 | 38.51.238.0–38.51.238.255 | 256 |
| 38.51.239.0/24 | 38.51.239.0–38.51.239.255 | 256 |
| 38.52.144.0/24 | 38.52.144.0–38.52.144.255 | 256 |
| 38.52.170.0/24 | 38.52.170.0–38.52.170.255 | 256 |
| 38.52.171.0/24 | 38.52.171.0–38.52.171.255 | 256 |
| 38.52.192.0/24 | 38.52.192.0–38.52.192.255 | 256 |
| 38.55.72.0/24 | 38.55.72.0–38.55.72.255 | 256 |
| 38.55.74.0/24 | 38.55.74.0–38.55.74.255 | 256 |
| 38.55.76.0/24 | 38.55.76.0–38.55.76.255 | 256 |
| 38.56.24.0/22 | 38.56.24.0–38.56.27.255 | 1,024 |
| 38.56.24.0/24 | 38.56.24.0–38.56.24.255 | 256 |
| 38.56.25.0/24 | 38.56.25.0–38.56.25.255 | 256 |
| 38.56.26.0/24 | 38.56.26.0–38.56.26.255 | 256 |
| 38.56.27.0/24 | 38.56.27.0–38.56.27.255 | 256 |
| 38.56.28.0/22 | 38.56.28.0–38.56.31.255 | 1,024 |
| 38.56.28.0/24 | 38.56.28.0–38.56.28.255 | 256 |
| 38.56.29.0/24 | 38.56.29.0–38.56.29.255 | 256 |
| 38.56.30.0/24 | 38.56.30.0–38.56.30.255 | 256 |
| 38.56.31.0/24 | 38.56.31.0–38.56.31.255 | 256 |
| 38.57.32.0/24 | 38.57.32.0–38.57.32.255 | 256 |
| 38.57.55.0/24 | 38.57.55.0–38.57.55.255 | 256 |
| 38.57.56.0/22 | 38.57.56.0–38.57.59.255 | 1,024 |
| 38.57.56.0/24 | 38.57.56.0–38.57.56.255 | 256 |
| 38.57.57.0/24 | 38.57.57.0–38.57.57.255 | 256 |
| 38.57.58.0/24 | 38.57.58.0–38.57.58.255 | 256 |
| 38.57.59.0/24 | 38.57.59.0–38.57.59.255 | 256 |
| 38.57.72.0/24 | 38.57.72.0–38.57.72.255 | 256 |
| 38.57.74.0/23 | 38.57.74.0–38.57.75.255 | 512 |
| 38.57.77.0/24 | 38.57.77.0–38.57.77.255 | 256 |
| 38.57.78.0/23 | 38.57.78.0–38.57.79.255 | 512 |
| 38.57.148.0/22 | 38.57.148.0–38.57.151.255 | 1,024 |
| 38.57.161.0/24 | 38.57.161.0–38.57.161.255 | 256 |
| 38.57.174.0/23 | 38.57.174.0–38.57.175.255 | 512 |
| 38.57.184.0/24 | 38.57.184.0–38.57.184.255 | 256 |
| 38.57.186.0/24 | 38.57.186.0–38.57.186.255 | 256 |
| 38.57.204.0/23 | 38.57.204.0–38.57.205.255 | 512 |
| 38.57.216.0/24 | 38.57.216.0–38.57.216.255 | 256 |
| 38.57.224.0/22 | 38.57.224.0–38.57.227.255 | 1,024 |
| 38.57.237.0/24 | 38.57.237.0–38.57.237.255 | 256 |
| 38.57.252.0/22 | 38.57.252.0–38.57.255.255 | 1,024 |
| 38.58.37.0/24 | 38.58.37.0–38.58.37.255 | 256 |
| 38.58.56.0/21 | 38.58.56.0–38.58.63.255 | 2,048 |
| 38.58.76.0/24 | 38.58.76.0–38.58.76.255 | 256 |
| 38.58.77.0/24 | 38.58.77.0–38.58.77.255 | 256 |
| 38.58.96.0/24 | 38.58.96.0–38.58.96.255 | 256 |
| 38.58.97.0/24 | 38.58.97.0–38.58.97.255 | 256 |
| 38.58.100.0/24 | 38.58.100.0–38.58.100.255 | 256 |
| 38.58.102.0/24 | 38.58.102.0–38.58.102.255 | 256 |
| 38.58.105.0/24 | 38.58.105.0–38.58.105.255 | 256 |
| 38.58.108.0/24 | 38.58.108.0–38.58.108.255 | 256 |
| 38.58.129.0/24 | 38.58.129.0–38.58.129.255 | 256 |
| 38.58.136.0/24 | 38.58.136.0–38.58.136.255 | 256 |
| 38.58.137.0/24 | 38.58.137.0–38.58.137.255 | 256 |
| 38.58.151.0/24 | 38.58.151.0–38.58.151.255 | 256 |
| 38.58.184.0/24 | 38.58.184.0–38.58.184.255 | 256 |
| 38.58.185.0/24 | 38.58.185.0–38.58.185.255 | 256 |
| 38.58.198.0/23 | 38.58.198.0–38.58.199.255 | 512 |
| 38.58.198.0/24 | 38.58.198.0–38.58.198.255 | 256 |
| 38.58.199.0/24 | 38.58.199.0–38.58.199.255 | 256 |
| 38.58.208.0/24 | 38.58.208.0–38.58.208.255 | 256 |
| 38.58.209.0/24 | 38.58.209.0–38.58.209.255 | 256 |
| 38.58.210.0/24 | 38.58.210.0–38.58.210.255 | 256 |
| 38.58.211.0/24 | 38.58.211.0–38.58.211.255 | 256 |
| 38.58.212.0/24 | 38.58.212.0–38.58.212.255 | 256 |
| 38.58.213.0/24 | 38.58.213.0–38.58.213.255 | 256 |
| 38.58.214.0/24 | 38.58.214.0–38.58.214.255 | 256 |
| 38.58.215.0/24 | 38.58.215.0–38.58.215.255 | 256 |
| 38.58.216.0/24 | 38.58.216.0–38.58.216.255 | 256 |
| 38.58.217.0/24 | 38.58.217.0–38.58.217.255 | 256 |
| 38.58.218.0/24 | 38.58.218.0–38.58.218.255 | 256 |
| 38.58.219.0/24 | 38.58.219.0–38.58.219.255 | 256 |
| 38.58.220.0/24 | 38.58.220.0–38.58.220.255 | 256 |
| 38.58.221.0/24 | 38.58.221.0–38.58.221.255 | 256 |
| 38.58.222.0/24 | 38.58.222.0–38.58.222.255 | 256 |
| 38.58.223.0/24 | 38.58.223.0–38.58.223.255 | 256 |
| 38.58.233.0/24 | 38.58.233.0–38.58.233.255 | 256 |
| 38.58.236.0/23 | 38.58.236.0–38.58.237.255 | 512 |
| 38.64.10.0/23 | 38.64.10.0–38.64.11.255 | 512 |
| 38.64.32.0/22 | 38.64.32.0–38.64.35.255 | 1,024 |
| 38.64.52.0/22 | 38.64.52.0–38.64.55.255 | 1,024 |
| 38.64.83.0/24 | 38.64.83.0–38.64.83.255 | 256 |
| 38.64.84.0/24 | 38.64.84.0–38.64.84.255 | 256 |
| 38.64.85.0/24 | 38.64.85.0–38.64.85.255 | 256 |
| 38.64.87.0/24 | 38.64.87.0–38.64.87.255 | 256 |
| 38.64.90.0/24 | 38.64.90.0–38.64.90.255 | 256 |
| 38.64.93.0/24 | 38.64.93.0–38.64.93.255 | 256 |
| 38.64.100.0/22 | 38.64.100.0–38.64.103.255 | 1,024 |
| 38.64.100.0/24 | 38.64.100.0–38.64.100.255 | 256 |
| 38.64.101.0/24 | 38.64.101.0–38.64.101.255 | 256 |
| 38.64.102.0/24 | 38.64.102.0–38.64.102.255 | 256 |
| 38.64.103.0/24 | 38.64.103.0–38.64.103.255 | 256 |
| 38.64.104.0/21 | 38.64.104.0–38.64.111.255 | 2,048 |
| 38.64.139.0/24 | 38.64.139.0–38.64.139.255 | 256 |
| 38.64.154.0/24 | 38.64.154.0–38.64.154.255 | 256 |
| 38.64.160.0/24 | 38.64.160.0–38.64.160.255 | 256 |
| 38.64.162.0/24 | 38.64.162.0–38.64.162.255 | 256 |
| 38.64.163.0/24 | 38.64.163.0–38.64.163.255 | 256 |
| 38.64.165.0/24 | 38.64.165.0–38.64.165.255 | 256 |
| 38.64.174.0/24 | 38.64.174.0–38.64.174.255 | 256 |
| 38.64.184.0/23 | 38.64.184.0–38.64.185.255 | 512 |
| 38.64.186.0/24 | 38.64.186.0–38.64.186.255 | 256 |
| 38.64.187.0/24 | 38.64.187.0–38.64.187.255 | 256 |
| 38.64.192.0/24 | 38.64.192.0–38.64.192.255 | 256 |
| 38.64.204.0/22 | 38.64.204.0–38.64.207.255 | 1,024 |
| 38.64.204.0/24 | 38.64.204.0–38.64.204.255 | 256 |
| 38.64.205.0/24 | 38.64.205.0–38.64.205.255 | 256 |
| 38.64.206.0/24 | 38.64.206.0–38.64.206.255 | 256 |
| 38.64.207.0/24 | 38.64.207.0–38.64.207.255 | 256 |
| 38.64.221.0/24 | 38.64.221.0–38.64.221.255 | 256 |
| 38.65.6.0/24 | 38.65.6.0–38.65.6.255 | 256 |
| 38.65.8.0/24 | 38.65.8.0–38.65.8.255 | 256 |
| 38.65.28.0/24 | 38.65.28.0–38.65.28.255 | 256 |
| 38.65.33.0/24 | 38.65.33.0–38.65.33.255 | 256 |
| 38.65.37.0/24 | 38.65.37.0–38.65.37.255 | 256 |
| 38.65.59.0/24 | 38.65.59.0–38.65.59.255 | 256 |
| 38.65.68.0/24 | 38.65.68.0–38.65.68.255 | 256 |
| 38.65.103.0/24 | 38.65.103.0–38.65.103.255 | 256 |
| 38.65.115.0/24 | 38.65.115.0–38.65.115.255 | 256 |
| 38.65.140.0/24 | 38.65.140.0–38.65.140.255 | 256 |
| 38.65.141.0/24 | 38.65.141.0–38.65.141.255 | 256 |
| 38.65.143.0/24 | 38.65.143.0–38.65.143.255 | 256 |
| 38.65.172.0/24 | 38.65.172.0–38.65.172.255 | 256 |
| 38.65.193.0/24 | 38.65.193.0–38.65.193.255 | 256 |
| 38.65.211.0/24 | 38.65.211.0–38.65.211.255 | 256 |
| 38.65.216.0/24 | 38.65.216.0–38.65.216.255 | 256 |
| 38.65.217.0/24 | 38.65.217.0–38.65.217.255 | 256 |
| 38.65.222.0/24 | 38.65.222.0–38.65.222.255 | 256 |
| 38.65.243.0/24 | 38.65.243.0–38.65.243.255 | 256 |
| 38.65.248.0/21 | 38.65.248.0–38.65.255.255 | 2,048 |
| 38.65.248.0/22 | 38.65.248.0–38.65.251.255 | 1,024 |
| 38.65.252.0/24 | 38.65.252.0–38.65.252.255 | 256 |
| 38.65.253.0/24 | 38.65.253.0–38.65.253.255 | 256 |
| 38.65.254.0/24 | 38.65.254.0–38.65.254.255 | 256 |
| 38.65.255.0/24 | 38.65.255.0–38.65.255.255 | 256 |
| 38.66.70.0/24 | 38.66.70.0–38.66.70.255 | 256 |
| 38.66.73.0/24 | 38.66.73.0–38.66.73.255 | 256 |
| 38.66.84.0/23 | 38.66.84.0–38.66.85.255 | 512 |
| 38.66.88.0/21 | 38.66.88.0–38.66.95.255 | 2,048 |
| 38.66.104.0/23 | 38.66.104.0–38.66.105.255 | 512 |
| 38.66.108.0/22 | 38.66.108.0–38.66.111.255 | 1,024 |
| 38.66.108.0/24 | 38.66.108.0–38.66.108.255 | 256 |
| 38.66.109.0/24 | 38.66.109.0–38.66.109.255 | 256 |
| 38.66.110.0/24 | 38.66.110.0–38.66.110.255 | 256 |
| 38.66.111.0/24 | 38.66.111.0–38.66.111.255 | 256 |
| 38.66.198.0/23 | 38.66.198.0–38.66.199.255 | 512 |
| 38.66.202.0/23 | 38.66.202.0–38.66.203.255 | 512 |
| 38.66.222.0/24 | 38.66.222.0–38.66.222.255 | 256 |
| 38.66.249.0/24 | 38.66.249.0–38.66.249.255 | 256 |
| 38.66.254.0/24 | 38.66.254.0–38.66.254.255 | 256 |
| 38.67.4.0/24 | 38.67.4.0–38.67.4.255 | 256 |
| 38.67.19.0/24 | 38.67.19.0–38.67.19.255 | 256 |
| 38.67.20.0/24 | 38.67.20.0–38.67.20.255 | 256 |
| 38.67.133.0/24 | 38.67.133.0–38.67.133.255 | 256 |
| 38.67.224.0/22 | 38.67.224.0–38.67.227.255 | 1,024 |
| 38.67.241.0/24 | 38.67.241.0–38.67.241.255 | 256 |
| 38.68.36.0/23 | 38.68.36.0–38.68.37.255 | 512 |
| 38.68.50.0/24 | 38.68.50.0–38.68.50.255 | 256 |
| 38.68.62.0/24 | 38.68.62.0–38.68.62.255 | 256 |
| 38.68.65.0/24 | 38.68.65.0–38.68.65.255 | 256 |
| 38.68.78.0/24 | 38.68.78.0–38.68.78.255 | 256 |
| 38.68.79.0/24 | 38.68.79.0–38.68.79.255 | 256 |
| 38.68.81.0/24 | 38.68.81.0–38.68.81.255 | 256 |
| 38.68.82.0/24 | 38.68.82.0–38.68.82.255 | 256 |
| 38.68.90.0/24 | 38.68.90.0–38.68.90.255 | 256 |
| 38.68.92.0/22 | 38.68.92.0–38.68.95.255 | 1,024 |
| 38.68.132.0/23 | 38.68.132.0–38.68.133.255 | 512 |
| 38.68.136.0/24 | 38.68.136.0–38.68.136.255 | 256 |
| 38.68.138.0/24 | 38.68.138.0–38.68.138.255 | 256 |
| 38.68.140.0/23 | 38.68.140.0–38.68.141.255 | 512 |
| 38.68.142.0/24 | 38.68.142.0–38.68.142.255 | 256 |
| 38.68.148.0/23 | 38.68.148.0–38.68.149.255 | 512 |
| 38.68.150.0/24 | 38.68.150.0–38.68.150.255 | 256 |
| 38.68.152.0/24 | 38.68.152.0–38.68.152.255 | 256 |
| 38.68.153.0/24 | 38.68.153.0–38.68.153.255 | 256 |
| 38.68.154.0/24 | 38.68.154.0–38.68.154.255 | 256 |
| 38.68.155.0/24 | 38.68.155.0–38.68.155.255 | 256 |
| 38.68.156.0/24 | 38.68.156.0–38.68.156.255 | 256 |
| 38.68.157.0/24 | 38.68.157.0–38.68.157.255 | 256 |
| 38.68.158.0/24 | 38.68.158.0–38.68.158.255 | 256 |
| 38.68.159.0/24 | 38.68.159.0–38.68.159.255 | 256 |
| 38.68.195.0/24 | 38.68.195.0–38.68.195.255 | 256 |
| 38.68.202.0/24 | 38.68.202.0–38.68.202.255 | 256 |
| 38.68.205.0/24 | 38.68.205.0–38.68.205.255 | 256 |
| 38.69.1.0/24 | 38.69.1.0–38.69.1.255 | 256 |
| 38.69.7.0/24 | 38.69.7.0–38.69.7.255 | 256 |
| 38.69.37.0/24 | 38.69.37.0–38.69.37.255 | 256 |
| 38.69.40.0/23 | 38.69.40.0–38.69.41.255 | 512 |
| 38.69.45.0/24 | 38.69.45.0–38.69.45.255 | 256 |
| 38.69.48.0/22 | 38.69.48.0–38.69.51.255 | 1,024 |
| 38.69.53.0/24 | 38.69.53.0–38.69.53.255 | 256 |
| 38.69.56.0/24 | 38.69.56.0–38.69.56.255 | 256 |
| 38.69.57.0/24 | 38.69.57.0–38.69.57.255 | 256 |
| 38.69.58.0/23 | 38.69.58.0–38.69.59.255 | 512 |
| 38.69.131.0/24 | 38.69.131.0–38.69.131.255 | 256 |
| 38.69.135.0/24 | 38.69.135.0–38.69.135.255 | 256 |
| 38.69.138.0/23 | 38.69.138.0–38.69.139.255 | 512 |
| 38.69.146.0/24 | 38.69.146.0–38.69.146.255 | 256 |
| 38.69.148.0/24 | 38.69.148.0–38.69.148.255 | 256 |
| 38.69.150.0/24 | 38.69.150.0–38.69.150.255 | 256 |
| 38.69.159.0/24 | 38.69.159.0–38.69.159.255 | 256 |
| 38.69.162.0/24 | 38.69.162.0–38.69.162.255 | 256 |
| 38.69.167.0/24 | 38.69.167.0–38.69.167.255 | 256 |
| 38.69.170.0/23 | 38.69.170.0–38.69.171.255 | 512 |
| 38.69.172.0/22 | 38.69.172.0–38.69.175.255 | 1,024 |
| 38.69.183.0/24 | 38.69.183.0–38.69.183.255 | 256 |
| 38.69.192.0/23 | 38.69.192.0–38.69.193.255 | 512 |
| 38.69.195.0/24 | 38.69.195.0–38.69.195.255 | 256 |
| 38.69.218.0/23 | 38.69.218.0–38.69.219.255 | 512 |
| 38.69.221.0/24 | 38.69.221.0–38.69.221.255 | 256 |
| 38.69.232.0/24 | 38.69.232.0–38.69.232.255 | 256 |
| 38.69.240.0/20 | 38.69.240.0–38.69.255.255 | 4,096 |
| 38.70.9.0/24 | 38.70.9.0–38.70.9.255 | 256 |
| 38.70.13.0/24 | 38.70.13.0–38.70.13.255 | 256 |
| 38.70.14.0/23 | 38.70.14.0–38.70.15.255 | 512 |
| 38.70.18.0/24 | 38.70.18.0–38.70.18.255 | 256 |
| 38.70.22.0/23 | 38.70.22.0–38.70.23.255 | 512 |
| 38.70.27.0/24 | 38.70.27.0–38.70.27.255 | 256 |
| 38.70.137.0/24 | 38.70.137.0–38.70.137.255 | 256 |
| 38.70.219.0/24 | 38.70.219.0–38.70.219.255 | 256 |
| 38.70.221.0/24 | 38.70.221.0–38.70.221.255 | 256 |
| 38.70.224.0/21 | 38.70.224.0–38.70.231.255 | 2,048 |
| 38.70.233.0/24 | 38.70.233.0–38.70.233.255 | 256 |
| 38.70.238.0/24 | 38.70.238.0–38.70.238.255 | 256 |
| 38.71.11.0/24 | 38.71.11.0–38.71.11.255 | 256 |
| 38.71.15.0/24 | 38.71.15.0–38.71.15.255 | 256 |
| 38.71.19.0/24 | 38.71.19.0–38.71.19.255 | 256 |
| 38.71.45.0/24 | 38.71.45.0–38.71.45.255 | 256 |
| 38.71.71.0/24 | 38.71.71.0–38.71.71.255 | 256 |
| 38.71.112.0/21 | 38.71.112.0–38.71.119.255 | 2,048 |
| 38.71.116.0/22 | 38.71.116.0–38.71.119.255 | 1,024 |
| 38.71.194.0/24 | 38.71.194.0–38.71.194.255 | 256 |
| 38.71.201.0/24 | 38.71.201.0–38.71.201.255 | 256 |
| 38.72.106.0/24 | 38.72.106.0–38.72.106.255 | 256 |
| 38.72.109.0/24 | 38.72.109.0–38.72.109.255 | 256 |
| 38.72.116.0/23 | 38.72.116.0–38.72.117.255 | 512 |
| 38.72.118.0/24 | 38.72.118.0–38.72.118.255 | 256 |
| 38.72.121.0/24 | 38.72.121.0–38.72.121.255 | 256 |
| 38.72.126.0/24 | 38.72.126.0–38.72.126.255 | 256 |
| 38.72.129.0/24 | 38.72.129.0–38.72.129.255 | 256 |
| 38.72.130.0/24 | 38.72.130.0–38.72.130.255 | 256 |
| 38.72.131.0/24 | 38.72.131.0–38.72.131.255 | 256 |
| 38.72.142.0/24 | 38.72.142.0–38.72.142.255 | 256 |
| 38.72.143.0/24 | 38.72.143.0–38.72.143.255 | 256 |
| 38.72.152.0/24 | 38.72.152.0–38.72.152.255 | 256 |
| 38.72.157.0/24 | 38.72.157.0–38.72.157.255 | 256 |
| 38.72.159.0/24 | 38.72.159.0–38.72.159.255 | 256 |
| 38.72.195.0/24 | 38.72.195.0–38.72.195.255 | 256 |
| 38.73.96.0/24 | 38.73.96.0–38.73.96.255 | 256 |
| 38.73.192.0/24 | 38.73.192.0–38.73.192.255 | 256 |
| 38.73.236.0/24 | 38.73.236.0–38.73.236.255 | 256 |
| 38.73.238.0/24 | 38.73.238.0–38.73.238.255 | 256 |
| 38.74.5.0/24 | 38.74.5.0–38.74.5.255 | 256 |
| 38.74.60.0/24 | 38.74.60.0–38.74.60.255 | 256 |
| 38.74.61.0/24 | 38.74.61.0–38.74.61.255 | 256 |
| 38.74.62.0/23 | 38.74.62.0–38.74.63.255 | 512 |
| 38.74.66.0/23 | 38.74.66.0–38.74.67.255 | 512 |
| 38.74.67.0/24 | 38.74.67.0–38.74.67.255 | 256 |
| 38.75.13.0/24 | 38.75.13.0–38.75.13.255 | 256 |
| 38.75.25.0/24 | 38.75.25.0–38.75.25.255 | 256 |
| 38.75.72.0/22 | 38.75.72.0–38.75.75.255 | 1,024 |
| 38.75.87.0/24 | 38.75.87.0–38.75.87.255 | 256 |
| 38.75.88.0/23 | 38.75.88.0–38.75.89.255 | 512 |
| 38.75.90.0/23 | 38.75.90.0–38.75.91.255 | 512 |
| 38.75.196.0/24 | 38.75.196.0–38.75.196.255 | 256 |
| 38.75.198.0/23 | 38.75.198.0–38.75.199.255 | 512 |
| 38.75.200.0/23 | 38.75.200.0–38.75.201.255 | 512 |
| 38.75.211.0/24 | 38.75.211.0–38.75.211.255 | 256 |
| 38.75.216.0/21 | 38.75.216.0–38.75.223.255 | 2,048 |
| 38.76.1.0/24 | 38.76.1.0–38.76.1.255 | 256 |
| 38.76.25.0/24 | 38.76.25.0–38.76.25.255 | 256 |
| 38.76.32.0/24 | 38.76.32.0–38.76.32.255 | 256 |
| 38.76.67.0/24 | 38.76.67.0–38.76.67.255 | 256 |
| 38.76.70.0/24 | 38.76.70.0–38.76.70.255 | 256 |
| 38.76.75.0/24 | 38.76.75.0–38.76.75.255 | 256 |
| 38.76.76.0/22 | 38.76.76.0–38.76.79.255 | 1,024 |
Showing the first 500 of 3,879 ranges. Download the TXT or CSV file for the complete list.
Cogent IPv6 ranges
| CIDR | Start IP – end IP | Addresses |
|---|---|---|
| 2001:550::/32 | 2001:550::–2001:550:ffff:ffff:ffff:ffff:ffff:ffff | 296 |
| 2001:550:1:c::/64 | 2001:550:1:c::–2001:550:1:c:ffff:ffff:ffff:ffff | 264 |
| 2001:550:1:100::/56 | 2001:550:1:100::–2001:550:1:1ff:ffff:ffff:ffff:ffff | 272 |
| 2001:550:1:300::/64 | 2001:550:1:300::–2001:550:1:300:ffff:ffff:ffff:ffff | 264 |
| 2001:550:1:301::/64 | 2001:550:1:301::–2001:550:1:301:ffff:ffff:ffff:ffff | 264 |
| 2001:550:1:304::/64 | 2001:550:1:304::–2001:550:1:304:ffff:ffff:ffff:ffff | 264 |
| 2001:550:100:8::/64 | 2001:550:100:8::–2001:550:100:8:ffff:ffff:ffff:ffff | 264 |
| 2001:550:100:9::/64 | 2001:550:100:9::–2001:550:100:9:ffff:ffff:ffff:ffff | 264 |
| 2001:550:104::/48 | 2001:550:104::–2001:550:104:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:107::/48 | 2001:550:107::–2001:550:107:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:108::/48 | 2001:550:108::–2001:550:108:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:201::/48 | 2001:550:201::–2001:550:201:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:202::/48 | 2001:550:202::–2001:550:202:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:203::/48 | 2001:550:203::–2001:550:203:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:204::/48 | 2001:550:204::–2001:550:204:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:205::/48 | 2001:550:205::–2001:550:205:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:206::/48 | 2001:550:206::–2001:550:206:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:209::/48 | 2001:550:209::–2001:550:209:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:20a::/48 | 2001:550:20a::–2001:550:20a:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:20b::/48 | 2001:550:20b::–2001:550:20b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:302::/48 | 2001:550:302::–2001:550:302:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:303::/48 | 2001:550:303::–2001:550:303:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:304::/48 | 2001:550:304::–2001:550:304:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:306::/48 | 2001:550:306::–2001:550:306:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:307::/48 | 2001:550:307::–2001:550:307:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:308::/48 | 2001:550:308::–2001:550:308:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:309::/48 | 2001:550:309::–2001:550:309:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:30c::/48 | 2001:550:30c::–2001:550:30c:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:30d::/48 | 2001:550:30d::–2001:550:30d:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:402::/48 | 2001:550:402::–2001:550:402:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:407::/48 | 2001:550:407::–2001:550:407:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:408::/48 | 2001:550:408::–2001:550:408:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:40a::/48 | 2001:550:40a::–2001:550:40a:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:40b::/48 | 2001:550:40b::–2001:550:40b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:40c::/48 | 2001:550:40c::–2001:550:40c:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:40e::/48 | 2001:550:40e::–2001:550:40e:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:40f::/48 | 2001:550:40f::–2001:550:40f:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:410::/48 | 2001:550:410::–2001:550:410:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:412::/48 | 2001:550:412::–2001:550:412:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:602::/48 | 2001:550:602::–2001:550:602:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:606::/48 | 2001:550:606::–2001:550:606:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:702::/48 | 2001:550:702::–2001:550:702:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:800:2::/64 | 2001:550:800:2::–2001:550:800:2:ffff:ffff:ffff:ffff | 264 |
| 2001:550:800:100::/56 | 2001:550:800:100::–2001:550:800:1ff:ffff:ffff:ffff:ffff | 272 |
| 2001:550:801::/48 | 2001:550:801::–2001:550:801:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:802::/48 | 2001:550:802::–2001:550:802:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:803::/51 | 2001:550:803::–2001:550:803:1fff:ffff:ffff:ffff:ffff | 277 |
| 2001:550:803:2000::/51 | 2001:550:803:2000::–2001:550:803:3fff:ffff:ffff:ffff:ffff | 277 |
| 2001:550:803:6000::/51 | 2001:550:803:6000::–2001:550:803:7fff:ffff:ffff:ffff:ffff | 277 |
| 2001:550:804::/48 | 2001:550:804::–2001:550:804:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:805::/48 | 2001:550:805::–2001:550:805:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:905::/48 | 2001:550:905::–2001:550:905:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:906::/48 | 2001:550:906::–2001:550:906:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:908::/48 | 2001:550:908::–2001:550:908:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:909::/48 | 2001:550:909::–2001:550:909:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:90b::/48 | 2001:550:90b::–2001:550:90b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:911::/48 | 2001:550:911::–2001:550:911:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:912::/48 | 2001:550:912::–2001:550:912:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:913::/48 | 2001:550:913::–2001:550:913:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a00::/48 | 2001:550:a00::–2001:550:a00:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a02::/48 | 2001:550:a02::–2001:550:a02:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a04::/48 | 2001:550:a04::–2001:550:a04:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a06::/48 | 2001:550:a06::–2001:550:a06:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a07::/48 | 2001:550:a07::–2001:550:a07:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a09::/48 | 2001:550:a09::–2001:550:a09:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a0a::/48 | 2001:550:a0a::–2001:550:a0a:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a0b::/48 | 2001:550:a0b::–2001:550:a0b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a0c::/48 | 2001:550:a0c::–2001:550:a0c:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a0d::/48 | 2001:550:a0d::–2001:550:a0d:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a0e::/49 | 2001:550:a0e::–2001:550:a0e:7fff:ffff:ffff:ffff:ffff | 279 |
| 2001:550:a0e:8000::/49 | 2001:550:a0e:8000::–2001:550:a0e:ffff:ffff:ffff:ffff:ffff | 279 |
| 2001:550:a0f::/48 | 2001:550:a0f::–2001:550:a0f:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a10::/48 | 2001:550:a10::–2001:550:a10:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a11::/48 | 2001:550:a11::–2001:550:a11:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a12::/48 | 2001:550:a12::–2001:550:a12:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a13::/48 | 2001:550:a13::–2001:550:a13:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a15::/48 | 2001:550:a15::–2001:550:a15:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a16::/48 | 2001:550:a16::–2001:550:a16:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a19::/48 | 2001:550:a19::–2001:550:a19:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a1a::/48 | 2001:550:a1a::–2001:550:a1a:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a1b::/48 | 2001:550:a1b::–2001:550:a1b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a1c::/48 | 2001:550:a1c::–2001:550:a1c:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a1d::/48 | 2001:550:a1d::–2001:550:a1d:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a20::/48 | 2001:550:a20::–2001:550:a20:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a21::/48 | 2001:550:a21::–2001:550:a21:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a22::/48 | 2001:550:a22::–2001:550:a22:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a23::/48 | 2001:550:a23::–2001:550:a23:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a24::/48 | 2001:550:a24::–2001:550:a24:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a25::/48 | 2001:550:a25::–2001:550:a25:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a26::/48 | 2001:550:a26::–2001:550:a26:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a28::/48 | 2001:550:a28::–2001:550:a28:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a29::/48 | 2001:550:a29::–2001:550:a29:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a2a::/48 | 2001:550:a2a::–2001:550:a2a:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a2b::/48 | 2001:550:a2b::–2001:550:a2b:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:a2c::/48 | 2001:550:a2c::–2001:550:a2c:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:b01::/48 | 2001:550:b01::–2001:550:b01:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:c01::/48 | 2001:550:c01::–2001:550:c01:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:c02::/48 | 2001:550:c02::–2001:550:c02:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:c03::/48 | 2001:550:c03::–2001:550:c03:ffff:ffff:ffff:ffff:ffff | 280 |
| 2001:550:c04::/48 | 2001:550:c04::–2001:550:c04:ffff:ffff:ffff:ffff:ffff | 280 |
Showing the first 100 of 529 ranges. Download the TXT or CSV file for the complete list.
About the Cogent IP range data
ASNs and holders
Cogent announces its prefixes from AS174. Holders in the registry: AS174 (COGENT-174 - Cogent Communications, LLC).
What the list contains
The ranges are the prefixes these ASNs announce in the public BGP routing table (obtained through RIPEstat), with adjacent blocks left unmerged. This is not an ownership record: it can include prefixes of customers and leased address space, and it can miss routes that very few peers see. Snapshot of 2026-11-02.
Typical uses
Allow or block traffic from Cogent in a firewall, WAF or nginx, label source IPs in your logs by network, or test with a CIDR match whether an IP belongs to Cogent. Remember that cloud and carrier address space also runs the services of customers, so blocking a whole network can hit unrelated sites.
How to use the Cogent IP list
- Start with the tables above: one for IPv4 and one for IPv6, each row with CIDR, start IP – end IP and address count.
- Choose Download TXT or Download CSV for the complete list. The file has all 4,408 ranges, not only the first rows shown on the page.
- Import the TXT as one address set into your firewall, router or ipset, or paste the CIDRs into a cloud security group rule.
- Check the snapshot date (2026-11-02) before using it in production. Cloud ranges change often, so compare with the official range file published by the provider.
Cogent IP ranges: frequently asked questions
How many IP ranges does Cogent have?
As of 2026-11-02, Cogent announces 3,879 IPv4 prefixes covering 36,320,256 addresses and 529 IPv6 prefixes in the public BGP routing table, through AS174.
What is the ASN of Cogent?
Cogent uses AS174. Holders in the registry: AS174 (COGENT-174 - Cogent Communications, LLC). Large organisations often run several ASNs, and this page merges the ones listed here.
How do I use the Cogent IP list for a firewall allowlist or blocklist?
Download the TXT file (one CIDR per line) and import it into ipset, nftables, an nginx allow or deny include, a router address list or a cloud security group. Import the 4,408 ranges as one address set rather than as separate rules. The address space of Cogent also hosts the services of its customers, so blocking all of it can cut off unrelated sites.
How often is the Cogent IP list updated?
The list is a snapshot of 2026-11-02, regenerated about once a week from public BGP data (RIPEstat). Announcements change every day, so download it again before using it in production, and for cloud providers also compare it with the official range file they publish.
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