Service randomly not working in Russia

[nleo]

Not resolve domains, after several sudo service dnscrypt-proxy restart or LAN interface connect disconect starts working. status - shows ok.

Maybe ISP blocking. How to ckeck?

$ ping mail.ru
ping: mail.ru: Name or service not known
$ ping mail.ru
ping: mail.ru: Name or service not known
$ ping mail.ru
PING mail.ru (217.69.139.202) 56(84) bytes of data.
64 bytes from mail.ru (217.69.139.202): icmp_seq=1 ttl=56 time=61.5 ms

● dnscrypt-proxy.service - DNSCrypt client proxy
     Loaded: loaded (/lib/systemd/system/dnscrypt-proxy.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2024-04-03 15:48:36 MSK; 16s ago
TriggeredBy: ● dnscrypt-proxy.socket
       Docs: https://github.com/DNSCrypt/dnscrypt-proxy/wiki
   Main PID: 380026 (dnscrypt-proxy)
      Tasks: 15 (limit: 17965)
     Memory: 11.0M
        CPU: 111ms
     CGroup: /system.slice/dnscrypt-proxy.service
             └─380026 /usr/sbin/dnscrypt-proxy -config /etc/dnscrypt-proxy/dnscrypt-proxy.toml

Apr 03 15:48:36  dnscrypt-proxy[380026]: [2024-04-03 15:48:36] [NOTICE] [dnscry.pt-riga-ipv4] OK (DNSCrypt) - rtt: 30ms
Apr 03 15:48:42  dnscrypt-proxy[380026]: [2024-04-03 15:48:42] [NOTICE] [dnscry.pt-kyiv-ipv4] TIMEOUT
Apr 03 15:48:42  dnscrypt-proxy[380026]: [2024-04-03 15:48:42] [NOTICE] [plan9dns-mx-doh] OK (DoH) - rtt: 173ms
Apr 03 15:48:47  dnscrypt-proxy[380026]: [2024-04-03 15:48:47] [NOTICE] [meganerd-doh-ipv4] OK (DoH) - rtt: 203ms
Apr 03 15:48:47  dnscrypt-proxy[380026]: [2024-04-03 15:48:47] [NOTICE] [cs-nyc1] OK (DNSCrypt) - rtt: 109ms
Apr 03 15:48:47  dnscrypt-proxy[380026]: [2024-04-03 15:48:47] [NOTICE] [dnscry.pt-frankfurt-ipv4] OK (DNSCrypt) - rtt: 48ms
Apr 03 15:48:48  dnscrypt-proxy[380026]: [2024-04-03 15:48:48] [NOTICE] [bebasdns-unfiltered-doh] OK (DoH) - rtt: 219ms
Apr 03 15:48:48  dnscrypt-proxy[380026]: [2024-04-03 15:48:48] [NOTICE] [doh-crypto-sx] OK (DoH) - rtt: 112ms
Apr 03 15:48:48  dnscrypt-proxy[380026]: [2024-04-03 15:48:48] [NOTICE] [v.dnscrypt.uk-ipv4] OK (DNSCrypt) - rtt: 55ms
Apr 03 15:48:48  dnscrypt-proxy[380026]: [2024-04-03 15:48:48] [NOTICE] [dnscry.pt-helsinki-ipv4] OK (DNSCrypt) - rtt: 51ms

[nleo]

Problem appears after system start or vpn turn on/off