diff --git a/data/mntner/ZW-MNT b/data/mntner/ZW-MNT
index 5bec75a9e..7f85ab80c 100644
--- a/data/mntner/ZW-MNT
+++ b/data/mntner/ZW-MNT
@@ -3,6 +3,10 @@ descr:              Zentralwerk Maintainer
 admin-c:            ZWNOC-DN42
 tech-c:             ZWNOC-DN42
 mnt-by:             ZW-MNT
+mnt-by:             ASTRO-MNT
+mnt-by:             SANDRO-MNT
+mnt-by:             M4RC3L-MNT
+mnt-by:             ERI-MNT
 source:             DN42
 remarks:            ## ASTRO-MNT
 auth:               pgp-fingerprint A5EE826D645DBE35F9B0993358512AE87A69900F