diff --git a/common.js b/common.js
index 87bfd2c..a1b3133 100644
--- a/common.js
+++ b/common.js
@@ -161,6 +161,17 @@ if (network == "mockmain") {
         }
     };
     // zetaclientIPs = ["50.16.78.24", "44.218.42.109","44.216.230.163"];
+    zetaclientIPs = [
+        "34.225.36.174",
+        "52.45.59.77",
+        "52.35.128.130",
+        "35.87.167.186",
+        "54.212.38.135",
+        "150.136.225.11",
+        "129.146.167.182",
+        "208.91.106.108",
+        "15.235.10.84"
+    ];
 
 } else { // default to athens3
     bitcoinChainID = 18332; 
diff --git a/zetaclients.js b/zetaclients.js
index 30c6238..f696270 100644
--- a/zetaclients.js
+++ b/zetaclients.js
@@ -118,6 +118,11 @@ async function zetaclients_versions() {
 
         let lastscannedPromises = [];
         for (let i = 0; i < IPs.length; i++) {
+            const res = await fetch(`${corsProxyURL}/http://${IPs[i]}:8123/ping`);
+            if (!res.ok) {
+                console.log(`IP or 8123 port not availableError: ${IPs[i]} ${res.status}` );
+                continue;
+            }
             fetch(`${corsProxyURL}/http://${IPs[i]}:8123/ip`, {method: 'GET'})
                 .then(response => {
                     if (response.ok) {