diff --git a/data/inetnum/172.20.143.0_28 b/data/inetnum/172.20.143.0_28
index 9ab14d8ff..f5036097c 100644
--- a/data/inetnum/172.20.143.0_28
+++ b/data/inetnum/172.20.143.0_28
@@ -1,4 +1,4 @@
-inetnum:            172.20.143.0 - 172.23.143.15
+inetnum:            172.20.143.0 - 172.20.143.15
 cidr:               172.20.143.0/28
 netname:            RIPNET
 admin-c:            RIPNET-DN42
@@ -7,4 +7,4 @@ mnt-by:             RIPNET-MNT
 nserver:            nsa.ripnet.dn42
 nserver:            nsb.ripnet.dn42
 status:             ASSIGNED
-source:             DN42
\ No newline at end of file
+source:             DN42