diff --git a/ffhh.conf b/ffhh.conf
index afac334..c2c361a 100644
--- a/ffhh.conf
+++ b/ffhh.conf
@@ -16,11 +16,11 @@ zone "hamburg.freifunk.net" IN {
     type master;
     allow-transfer {
     	81.7.15.101; # named.exosphere.de
-    	78.47.49.236; # ns.ohrensessel.net
+    	144.76.72.235; # ns.ohrensessel.net
     };
     also-notify {
     	81.7.15.101; # named.exosphere.de
-        78.47.49.236; # ns.ohrensessel.net
+        144.76.72.235; # ns.ohrensessel.net
     };
     file "/etc/bind/master/db.net.freifunk.hamburg";
 };
@@ -29,11 +29,11 @@ zone "knotengraph.de" IN {
     type master;
     allow-transfer {
     	81.7.15.101; # named.exosphere.de
-    	78.47.49.236; # ns.ohrensessel.net
+    	144.76.72.235; # ns.ohrensessel.net
     };
     also-notify {
     	81.7.15.101; # named.exosphere.de
-        78.47.49.236; # ns.ohrensessel.net
+        144.76.72.235; # ns.ohrensessel.net
     };
     file "/etc/bind/master/db.de.knotengraph";
 };
@@ -42,11 +42,11 @@ zone "knotenkarte.de" IN {
     type master;
     allow-transfer {
     	81.7.15.101; # named.exosphere.de
-    	78.47.49.236; # ns.ohrensessel.net
+    	144.76.72.235; # ns.ohrensessel.net
     };
     also-notify {
     	81.7.15.101; # named.exosphere.de
-        78.47.49.236; # ns.ohrensessel.net
+        144.76.72.235; # ns.ohrensessel.net
     };
     file "/etc/bind/master/db.de.knotenkarte";
 };
@@ -75,11 +75,11 @@ zone "7.6.2.2.3.0.a.2.ip6.arpa" IN {
     file "/etc/bind/master/db.arpa.ip6.2.a.0.3.2.2.6.7";
     allow-transfer {
     	81.7.15.101; # named.exosphere.de
-    	78.47.49.236; # ns.ohrensessel.net
+    	144.76.72.235; # ns.ohrensessel.net
     };
     also-notify {
     	81.7.15.101; # named.exosphere.de
-        78.47.49.236; # ns.ohrensessel.net
+        144.76.72.235; # ns.ohrensessel.net
     };
     allow-update { key srv01-zone-key.; };
 };