"Could you please run these two telnet tests from your side and let me know the results? I'm getting the exact same behavior."
telnet 44.238.177.138 5060 (Should CONNECT ✅)
telnet 44.229.228.186 5060 (Should FAIL or TIMEOUT ❌)
"I need to confirm if the second IP is unreachable for you too, which would indicate a routing issue outside of my local network."