diff --git a/data/aut-num/AS4242421255 b/data/aut-num/AS4242421255
new file mode 100644
index 000000000..bd01a273f
--- /dev/null
+++ b/data/aut-num/AS4242421255
@@ -0,0 +1,7 @@
+aut-num:            AS4242421255
+as-name:            YUKINO-AS
+descr:              Yukino Experimental Network
+admin-c:            YUKINO-DN42
+tech-c:             YUKINO-DN42
+mnt-by:             YUKINO-MNT
+source:             DN42
diff --git a/data/inet6num/fd28:27bf:e648::_48 b/data/inet6num/fd28:27bf:e648::_48
new file mode 100644
index 000000000..68dbed0eb
--- /dev/null
+++ b/data/inet6num/fd28:27bf:e648::_48
@@ -0,0 +1,10 @@
+inet6num:           fd28:27bf:e648:0000:0000:0000:0000:0000 - fd28:27bf:e648:ffff:ffff:ffff:ffff:ffff
+netname:            YUKINO-NET6-BLOCK1
+descr:              YUKINO-NET6-BLOCK1
+country:            CN
+admin-c:            YUKINO-DN42
+tech-c:             YUKINO-DN42
+mnt-by:             YUKINO-MNT
+status:             ASSIGNED
+cidr:               fd28:27bf:e648::/48
+source:             DN42
diff --git a/data/inetnum/172.23.15.64_26 b/data/inetnum/172.23.15.64_26
new file mode 100644
index 000000000..5b262702b
--- /dev/null
+++ b/data/inetnum/172.23.15.64_26
@@ -0,0 +1,10 @@
+inetnum:            172.23.15.64 - 172.23.15.127
+netname:            YUKINO-NET4-BLOCK1
+descr:              YUKINO-NET4-BLOCK1
+country:            CN
+admin-c:            YUKINO-DN42
+tech-c:             YUKINO-DN42
+mnt-by:             YUKINO-MNT
+status:             ASSIGNED
+cidr:               172.23.15.64/26
+source:             DN42
diff --git a/data/mntner/YUKINO-MNT b/data/mntner/YUKINO-MNT
new file mode 100644
index 000000000..46c646662
--- /dev/null
+++ b/data/mntner/YUKINO-MNT
@@ -0,0 +1,6 @@
+mntner:             YUKINO-MNT
+admin-c:            YUKINO-DN42
+tech-c:             YUKINO-DN42
+mnt-by:             YUKINO-MNT
+source:             DN42
+auth:               pgp-fingerprint A632A142E5ED90D7F5267B68ABF5F939AD9CA0F8
diff --git a/data/person/YUKINO-DN42 b/data/person/YUKINO-DN42
new file mode 100644
index 000000000..863a8e5a6
--- /dev/null
+++ b/data/person/YUKINO-DN42
@@ -0,0 +1,6 @@
+person:             Yukino
+e-mail:             yukino@acgcl.net
+contact:            telegram:yukino5
+nic-hdl:            YUKINO-DN42
+mnt-by:             YUKINO-MNT
+source:             DN42
diff --git a/data/route/172.23.15.64_26 b/data/route/172.23.15.64_26
new file mode 100644
index 000000000..3dd7bf91f
--- /dev/null
+++ b/data/route/172.23.15.64_26
@@ -0,0 +1,5 @@
+route:              172.23.15.64/26
+descr:              YUKINO-NET4-BLOCK1
+origin:             AS4242421255
+mnt-by:             YUKINO-MNT
+source:             DN42
diff --git a/data/route6/fd28:27bf:e648::_48 b/data/route6/fd28:27bf:e648::_48
new file mode 100644
index 000000000..c6ce54ab3
--- /dev/null
+++ b/data/route6/fd28:27bf:e648::_48
@@ -0,0 +1,5 @@
+route6:             fd28:27bf:e648::/48
+descr:              YUKINO-NET6-BLOCK1
+origin:             AS4242421255
+mnt-by:             YUKINO-MNT
+source:             DN42