well, that’s more clear, no?
what happens when you try to ping api.telegram.org from your server?
I get:
ping api.telegram.org
PING api.telegram.org (149.154.166.110) 56(84) bytes of data.
64 bytes from 149.154.166.110: icmp_seq=1 ttl=49 time=33.3 ms
64 bytes from 149.154.166.110: icmp_seq=2 ttl=49 time=31.5 ms
64 bytes from 149.154.166.110: icmp_seq=3 ttl=49 time=33.1 ms
which looks healthy.