diff --git a/hieradata/roles/infra/puppet/master.yaml b/hieradata/roles/infra/puppet/master.yaml
index c9a7376..37ebf4f 100644
--- a/hieradata/roles/infra/puppet/master.yaml
+++ b/hieradata/roles/infra/puppet/master.yaml
@@ -5,6 +5,13 @@ profiles::puppet::autosign::subnet_ranges:
   - '198.18.15.0/24'
   - '198.18.16.0/24'
   - '198.18.17.0/24'
+  - '198.18.20.0/24'
+  - '198.18.24.0/24'
+  - '198.18.25.0/24'
+  - '198.18.26.0/24'
+  - '198.18.27.0/24'
+  - '198.18.28.0/24'
+  - '198.18.29.0/24'
 
 profiles::puppet::autosign::domains:
   - '*.main.unkin.net'
diff --git a/modules/libs/lib/facter/subnet_facts.rb b/modules/libs/lib/facter/subnet_facts.rb
index 28325fd..6bc2886 100644
--- a/modules/libs/lib/facter/subnet_facts.rb
+++ b/modules/libs/lib/facter/subnet_facts.rb
@@ -12,7 +12,7 @@ class SubnetAttributes
     '198.18.17.0/24' => { environment: 'prod', region: 'drw1', country: 'au' },
     '198.18.18.0/24' => { environment: 'test', region: 'drw1', country: 'au' },
     '198.18.19.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # loopbacks
-    '198.18.20.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # RESERVED
+    '198.18.20.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # MPLS CORE BLOCKS
     '198.18.21.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # physical network 2.5gbe
     '198.18.22.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # ceph cluster
     '198.18.23.0/24' => { environment: 'prod', region: 'syd1', country: 'au' }, # ceph public