diff --git a/data/aut-num/AS4242420323 b/data/aut-num/AS4242420323
new file mode 100644
index 000000000..5cc07ff21
--- /dev/null
+++ b/data/aut-num/AS4242420323
@@ -0,0 +1,6 @@
+aut-num:            AS4242420323
+as-name:            ChessKuo
+admin-c:            YCK-DN42
+tech-c:             YCK-DN42
+mnt-by:             CHESSKUO-MNT
+source:             DN42
diff --git a/data/inet6num/fd00:1999:323::_48 b/data/inet6num/fd00:1999:323::_48
new file mode 100644
index 000000000..c77acff7f
--- /dev/null
+++ b/data/inet6num/fd00:1999:323::_48
@@ -0,0 +1,9 @@
+inet6num:           fd00:1999:0323:0000:0000:0000:0000:0000 - fd00:1999:0323:ffff:ffff:ffff:ffff:ffff
+cidr:               fd00:1999:323::/48
+netname:            CHESSKUO-DN42-IPv6
+country:            TW
+admin-c:            YCK-DN42
+tech-c:             YCK-DN42
+mnt-by:             CHESSKUO-MNT
+status:             ASSIGNED
+source:             DN42
diff --git a/data/inetnum/172.23.87.0_25 b/data/inetnum/172.23.87.0_25
new file mode 100644
index 000000000..d85daa5ab
--- /dev/null
+++ b/data/inetnum/172.23.87.0_25
@@ -0,0 +1,9 @@
+inetnum:            172.23.87.0 - 172.23.87.127
+cidr:               172.23.87.0/25
+netname:            CHESSKUO-DN42-IPv4
+country:            TW
+admin-c:            YCK-DN42
+tech-c:             YCK-DN42
+mnt-by:             CHESSKUO-MNT
+status:             ASSIGNED
+source:             DN42
diff --git a/data/mntner/CHESSKUO-MNT b/data/mntner/CHESSKUO-MNT
new file mode 100644
index 000000000..ea636648a
--- /dev/null
+++ b/data/mntner/CHESSKUO-MNT
@@ -0,0 +1,6 @@
+mntner:             CHESSKUO-MNT
+admin-c:            YCK-DN42
+tech-c:             YCK-DN42
+mnt-by:             CHESSKUO-MNT
+auth:               pgp-fingerprint C3DC105701561CFF7CA0A69D2E603691C6178C2E
+source:             DN42
diff --git a/data/person/YCK-DN42 b/data/person/YCK-DN42
new file mode 100644
index 000000000..9d98f8e56
--- /dev/null
+++ b/data/person/YCK-DN42
@@ -0,0 +1,5 @@
+person:             Yu-Cheng Kuo
+e-mail:             dn42@chesskuo.tw
+nic-hdl:            YCK-DN42
+mnt-by:             CHESSKUO-MNT
+source:             DN42
diff --git a/data/route/172.23.87.0_25 b/data/route/172.23.87.0_25
new file mode 100644
index 000000000..6f3d5fff6
--- /dev/null
+++ b/data/route/172.23.87.0_25
@@ -0,0 +1,4 @@
+route:              172.23.87.0/25
+origin:             AS4242420323
+mnt-by:             CHESSKUO-MNT
+source:             DN42
diff --git a/data/route6/fd00:1999:323::_48 b/data/route6/fd00:1999:323::_48
new file mode 100644
index 000000000..830c7187e
--- /dev/null
+++ b/data/route6/fd00:1999:323::_48
@@ -0,0 +1,5 @@
+route6:             fd00:1999:323::/48
+origin:             AS4242420323
+max-length:         48
+mnt-by:             CHESSKUO-MNT
+source:             DN42