diff --git a/capsulflask/admin.py b/capsulflask/admin.py
index 6b57197..e08511c 100644
--- a/capsulflask/admin.py
+++ b/capsulflask/admin.py
@@ -163,6 +163,9 @@ def index():
       host_network_key = f"{host_id}_{network['network_name']}" 
       if host_network_key in db_vms_by_host_network:
         for vm in db_vms_by_host_network[host_network_key]:
+          if 'public_ipv4' not in vm or vm['public_ipv4'] is None:
+            continue
+          
           ip_address_int = int(ipaddress.ip_address(vm['public_ipv4']))
           if network_start_int <= ip_address_int and ip_address_int <= network_end_int:
             allocation = f"{host_id}_{network['network_name']}_{len(network['allocations'])}"