diff --git a/mappings/net/minecraft/client/network/AllowedAddressResolver.mapping b/mappings/net/minecraft/client/network/AllowedAddressResolver.mapping
index f41a27b11f..fe375b73d0 100644
--- a/mappings/net/minecraft/client/network/AllowedAddressResolver.mapping
+++ b/mappings/net/minecraft/client/network/AllowedAddressResolver.mapping
@@ -2,8 +2,10 @@ CLASS net/minecraft/class_6370 net/minecraft/client/network/AllowedAddressResolv
 	FIELD field_33745 DEFAULT Lnet/minecraft/class_6370;
 	FIELD field_33746 addressResolver Lnet/minecraft/class_6369;
 	FIELD field_33747 redirectResolver Lnet/minecraft/class_6371;
+	FIELD field_33847 blockListChecker Lnet/minecraft/class_6394;
 	METHOD <init> (Lnet/minecraft/class_6369;Lnet/minecraft/class_6371;Lnet/minecraft/class_6394;)V
 		ARG 1 addressResolver
 		ARG 2 redirectResolver
+		ARG 3 blockListChecker
 	METHOD method_36907 resolve (Lnet/minecraft/class_639;)Ljava/util/Optional;
 		ARG 1 address
diff --git a/mappings/net/minecraft/client/network/BlockListChecker.mapping b/mappings/net/minecraft/client/network/BlockListChecker.mapping
new file mode 100644
index 0000000000..9c7828f5e0
--- /dev/null
+++ b/mappings/net/minecraft/client/network/BlockListChecker.mapping
@@ -0,0 +1,6 @@
+CLASS net/minecraft/class_6394 net/minecraft/client/network/BlockListChecker
+	METHOD method_37097 create ()Lnet/minecraft/class_6394;
+	METHOD method_37098 isBlocked (Lnet/minecraft/class_6368;)Z
+		ARG 1 address
+	METHOD method_37099 isBlocked (Lnet/minecraft/class_639;)Z
+		ARG 1 address