#!/bin/bash
declare -a IPs=( 
	"51.15.0.17" 
	"51.15.53.138"
	"130.206.1.8"
	"94.142.242.225" )

for x in ${IPs[@]}; do
	curl --cacert $HOME/sks-keyservers.netCA.pem --resolve "hkps.pool.sks-keyservers.net:443:$x" "https://hkps.pool.sks-keyservers.net/pks/lookup?op=stats" > /dev/null; echo "Return: $?";
done