diff --git a/data/aut-num/AS4242421045 b/data/aut-num/AS4242421045
new file mode 100644
index 000000000..999dbdb60
--- /dev/null
+++ b/data/aut-num/AS4242421045
@@ -0,0 +1,7 @@
+aut-num:            AS4242421045
+as-name:            CIRNO-AS
+descr:              Cirno's Perfect Network Class
+admin-c:            STANG-DN42
+tech-c:             STANG-DN42
+mnt-by:             STANG-MNT
+source:             DN42
diff --git a/data/inet6num/fd6e:2659:5811::_48 b/data/inet6num/fd6e:2659:5811::_48
new file mode 100644
index 000000000..b11a61c55
--- /dev/null
+++ b/data/inet6num/fd6e:2659:5811::_48
@@ -0,0 +1,10 @@
+inet6num:           fd6e:2659:5811:0000:0000:0000:0000:0000 - fd6e:2659:5811:ffff:ffff:ffff:ffff:ffff
+cidr:               fd6e:2659:5811::/48
+netname:            CIRNO-DN42-IPV6
+descr:              Cirno DN42 Network IPv6 Block
+country:            US
+admin-c:            STANG-DN42
+tech-c:             STANG-DN42
+mnt-by:             STANG-MNT
+status:             ASSIGNED
+source:             DN42
diff --git a/data/inetnum/172.21.81.64_26 b/data/inetnum/172.21.81.64_26
new file mode 100644
index 000000000..3620c4f8b
--- /dev/null
+++ b/data/inetnum/172.21.81.64_26
@@ -0,0 +1,10 @@
+inetnum:            172.21.81.64 - 172.21.81.127
+cidr:               172.21.81.64/26
+netname:            CIRNO-DN42-IPV4
+descr:              Cirno DN42 Network IPv4 Block
+country:            US
+admin-c:            STANG-DN42
+tech-c:             STANG-DN42
+mnt-by:             STANG-MNT
+status:             ASSIGNED
+source:             DN42
diff --git a/data/mntner/STANG-MNT b/data/mntner/STANG-MNT
new file mode 100644
index 000000000..6190531a4
--- /dev/null
+++ b/data/mntner/STANG-MNT
@@ -0,0 +1,8 @@
+mntner:             STANG-MNT
+admin-c:            STANG-DN42
+tech-c:             STANG-DN42
+mnt-by:             STANG-MNT
+source:             DN42
+auth:               pgp-fingerprint AB51FAC68C6D925613C12086E875B15EEAF97E8F
+auth:               ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIGmdiCtbUzikqcZl2qS4d5QpB3YwFzeiPKD/STkDWzB
+remarks:            SHA256:sVmGrm31jYLCnRlKDKJwaXoGyXH/CHmDNVvSQ1zaQ8k
diff --git a/data/person/STANG-DN42 b/data/person/STANG-DN42
new file mode 100644
index 000000000..b28e2863c
--- /dev/null
+++ b/data/person/STANG-DN42
@@ -0,0 +1,7 @@
+person:             Satori Komeiji
+e-mail:             dn42@chireiden.dev
+contact:            irc: koi@irc.hackint.org with cloak *!*@hackint/user/koi
+contact:            telegram: @stang_wm
+nic-hdl:            STANG-DN42
+mnt-by:             STANG-MNT
+source:             DN42
diff --git a/data/route/172.21.81.64_26 b/data/route/172.21.81.64_26
new file mode 100644
index 000000000..ae9d59ac9
--- /dev/null
+++ b/data/route/172.21.81.64_26
@@ -0,0 +1,5 @@
+route:              172.21.81.64/26
+descr:              Cirno DN42 Network IPv4 Block
+origin:             AS4242421045
+mnt-by:             STANG-MNT
+source:             DN42
diff --git a/data/route6/fd6e:2659:5811::_48 b/data/route6/fd6e:2659:5811::_48
new file mode 100644
index 000000000..103be5f02
--- /dev/null
+++ b/data/route6/fd6e:2659:5811::_48
@@ -0,0 +1,5 @@
+route6:             fd6e:2659:5811::/48
+descr:              Cirno DN42 Network IPv6 Block
+origin:             AS4242421045
+mnt-by:             STANG-MNT
+source:             DN42