diff --git a/bird/function/dn42.conf b/bird/function/dn42.conf
index f4330b2..619be62 100644
--- a/bird/function/dn42.conf
+++ b/bird/function/dn42.conf
@@ -3,17 +3,13 @@ ipv6 table dn42v6;
 
 function dn42_is_valid_network() {
   return net ~ [
-    172.20.0.0/14{21,29}, # dn42
-    172.20.0.0/24{28,32}, # dn42 Anycast
-    172.21.0.0/24{28,32}, # dn42 Anycast
-    172.22.0.0/24{28,32}, # dn42 Anycast
-    172.23.0.0/24{28,32}  # dn42 Anycast
+    172.20.0.0/14+
   ];
 }
 
 function dn42_is_valid_network_v6() {
   return net ~ [
-    fd00::/8{44,64} # ULA address space as per RFC 4193
+    fd00::/8+
   ];
 }