diff --git a/ansible/files/advertised_ip_ranges.yml b/ansible/files/advertised_ip_ranges.yml
index 962577a..0c0d3b4 100644
--- a/ansible/files/advertised_ip_ranges.yml
+++ b/ansible/files/advertised_ip_ranges.yml
@@ -14,4 +14,8 @@
 # Mysten-6 lhr host primary nic
  - isd_as: 65-2:0:5a
    cidr_ranges:
-     - 209.250.224.204/32 
+     - 209.250.224.204/32
+# RubyNodes
+ - isd_as: 66-2:0:7e
+   cidr_ranges:
+     - 45.250.255.116/32