diff --git a/data/inetnum/172.20.72.0_21 b/data/inetnum/172.20.72.0_21
index 66633e674..195d36937 100644
--- a/data/inetnum/172.20.72.0_21
+++ b/data/inetnum/172.20.72.0_21
@@ -4,7 +4,7 @@ descr:              zentralwerk network
 policy:             reserved
 remarks:            Contact eri for allocation information.
 org:                ORG-ZENTRALWERK
-mnt-by:             ERI-MNT
+mnt-by:             ZW-MNT
 status:             ALLOCATED
 cidr:               172.20.72.0/21
 source:             DN42
diff --git a/data/mntner/ZW-MNT b/data/mntner/ZW-MNT
index 51cdf722d..e411d1986 100644
--- a/data/mntner/ZW-MNT
+++ b/data/mntner/ZW-MNT
@@ -1,6 +1,6 @@
 mntner:             ZW-MNT
 descr:              Zentralwerk Maintainer
-admin-c:            DUMMY-DN42
-tech-c:             DUMMY-DN42
+admin-c:            ASTRO-DN42
+tech-c:             ASTRO-DN42
 mnt-by:             ZW-MNT
 source:             DN42
diff --git a/data/route/172.20.72.0_21 b/data/route/172.20.72.0_21
new file mode 100644
index 000000000..91f0cf152
--- /dev/null
+++ b/data/route/172.20.72.0_21
@@ -0,0 +1,5 @@
+route:              172.20.72.0/21
+descr:              zentralwerk network
+origin:             AS4242421127
+mnt-by:             ZW-MNT
+source:             DN42