Я себе в конфиг openvpn вот это добавил.
Большую часть адресов нашел в гугле - они все с маской 255.255.255.0, и возможно там будут лишние. И айпи которые сам добавил идут с маской 255.255.255.255 - вот они точно все нужны. В итоге у меня впн работает по сути только на телегу, если заморочишься и удалишь лишние айпи - вообще прекрасно будет.
#конфиг для телеги
route 104.19.198.151 255.255.255.255
route 104.22.1.43 255.255.255.255
route 108.177.14.100 255.255.255.255
route 149.154.160.0 255.255.255.0
route 149.154.164.0 255.255.255.0
route 149.154.167.0 255.255.255.0
route 149.154.168.0 255.255.255.0
route 149.154.171.0 255.255.255.0
route 149.154.172.0 255.255.255.0
route 149.154.175.0 255.255.255.0
route 151.101.1.0 255.255.255.0
route 169.55.60.0 255.255.255.0
route 172.217.22.0 255.255.255.0
route 173.194.220.0 255.255.255.0
route 173.194.222.0 255.255.255.0
route 173.194.73.95 255.255.255.255
route 173.194.76.188 255.255.255.255
route 18.184.99.129 255.255.255.255
route 198.252.206.25 255.255.255.255
route 216.239.32.107 255.255.255.255
route 216.239.34.107 255.255.255.255
route 216.239.36.107 255.255.255.255
route 216.239.38.107 255.255.255.255
route 216.58.211.3 255.255.255.255
route 31.13.72.52 255.255.255.255
route 52.6.232.194 255.255.255.255
route 54.93.254.234 255.255.255.255
route 64.233.161.188 255.255.255.255
route 64.233.165.188 255.255.255.255
route 74.125.205.188 255.255.255.255
route 74.125.206.188 255.255.255.255
route 74.125.71.188 255.255.255.255
route 91.108.12.0 255.255.255.0
route 91.108.16.0 255.255.255.0
route 91.108.4.0 255.255.255.0
route 91.108.56.0 255.255.255.0
route 91.108.8.0 255.255.255.0
route 94.31.29.138 255.255.255.255
route 95.101.142.43 255.255.255.255
route-metric 50
route-nopull