diff --git a/data/dns/sherpherd.dn42 b/data/dns/sherpherd.dn42
index 83d9ce0ab..2807dd7ff 100644
--- a/data/dns/sherpherd.dn42
+++ b/data/dns/sherpherd.dn42
@@ -2,8 +2,8 @@ domain:             sherpherd.dn42
 admin-c:            HAKSRPD-DN42
 tech-c:             HAKSRPD-DN42
 mnt-by:             SERNET-MNT
-nserver:            ns1.sherpherd.dn42 172.23.217.10
+nserver:            ns1.sherpherd.dn42 172.20.209.120
 nserver:            ns1.sherpherd.dn42 fdfa:7906:8262::1010
-nserver:            ns2.sherpherd.dn42 172.23.217.11
+nserver:            ns2.sherpherd.dn42 172.23.209.121
 nserver:            ns2.sherpherd.dn42 fdfa:7906:8262::1011
 source:             DN42
diff --git a/data/inetnum/172.23.217.0_27 b/data/inetnum/172.20.209.64_26
similarity index 77%
rename from data/inetnum/172.23.217.0_27
rename to data/inetnum/172.20.209.64_26
index 25c767bc3..7af774e54 100644
--- a/data/inetnum/172.23.217.0_27
+++ b/data/inetnum/172.20.209.64_26
@@ -1,12 +1,11 @@
-inetnum:            172.23.217.0 - 172.23.217.31
+inetnum:            172.20.209.64 - 172.20.209.127
 netname:            SERNET-DN42-IPV4
-country:            CN
 nserver:            ns1.sherpherd.dn42
 nserver:            ns2.sherpherd.dn42
 admin-c:            HAKSRPD-DN42
 tech-c:             HAKSRPD-DN42
 mnt-by:             SERNET-MNT
 status:             ASSIGNED
-cidr:               172.23.217.0/27
+cidr:               172.20.209.64/26
 remarks:            Peering worldwide, Asia region node preferred. Contact me at haksrpd@outlook.com
 source:             DN42
diff --git a/data/route/172.23.217.0_27 b/data/route/172.20.209.64_26
similarity index 83%
rename from data/route/172.23.217.0_27
rename to data/route/172.20.209.64_26
index ad96f22dc..0992ca0c9 100644
--- a/data/route/172.23.217.0_27
+++ b/data/route/172.20.209.64_26
@@ -1,4 +1,4 @@
-route:              172.23.217.0/27
+route:              172.20.209.64/26
 descr:              Peering worldwide, Asia region node preferred. Contact me at haksrpd@outlook.com
 origin:             AS4242423947
 mnt-by:             SERNET-MNT