diff --git a/data/aut-num/AS4242420668 b/data/aut-num/AS4242420668
new file mode 100644
index 000000000..68978faeb
--- /dev/null
+++ b/data/aut-num/AS4242420668
@@ -0,0 +1,8 @@
+aut-num:            AS4242420668
+as-name:            YZTCFH-AS
+descr:              Hello world!
+remarks:            Hello world!
+admin-c:            YZTCFH-DN42
+tech-c:             YZTCFH-DN42
+mnt-by:             YZTCFH-MNT
+source:             DN42
\ No newline at end of file
diff --git a/data/inetnum/172.21.99.192_27 b/data/inetnum/172.21.99.192_27
new file mode 100644
index 000000000..458b8eff4
--- /dev/null
+++ b/data/inetnum/172.21.99.192_27
@@ -0,0 +1,11 @@
+inetnum:            172.21.99.192 - 172.21.99.223
+netname:            YZTCFH-IPV4
+descr:              Hello world!
+remarks:            Hello world!
+country:            CN
+admin-c:            YZTCFH-DN42
+tech-c:             YZTCFH-DN42
+mnt-by:             YZTCFH-MNT
+status:             ASSIGNED
+cidr:               172.21.99.192/27
+source:             DN42
\ No newline at end of file
diff --git a/data/mntner/YZTCFH-MNT b/data/mntner/YZTCFH-MNT
new file mode 100644
index 000000000..a5c90f60b
--- /dev/null
+++ b/data/mntner/YZTCFH-MNT
@@ -0,0 +1,7 @@
+mntner:             YZTCFH-MNT
+admin-c:            YZTCFH-DN42
+tech-c:             YZTCFH-DN42
+mnt-by:             YZTCFH-MNT
+source:             DN42
+auth:               pgp-fingerprint 4C4533B39A895B4771064FCC4672C1549084C9C3
+remarks:            Hello world!
\ No newline at end of file
diff --git a/data/person/YZTCFH-DN42 b/data/person/YZTCFH-DN42
new file mode 100644
index 000000000..900050a72
--- /dev/null
+++ b/data/person/YZTCFH-DN42
@@ -0,0 +1,5 @@
+person:             YZTCFH
+e-mail:             a184439103@outlook.com
+nic-hdl:            YZTCFH-DN42
+mnt-by:             YZTCFH-MNT
+source:             DN42
\ No newline at end of file
diff --git a/data/route/172.21.99.192_27 b/data/route/172.21.99.192_27
new file mode 100644
index 000000000..84fa8aa30
--- /dev/null
+++ b/data/route/172.21.99.192_27
@@ -0,0 +1,7 @@
+route:              172.21.99.192/27
+descr:              Hello world!
+remarks:            Hello world!
+origin:             AS4242420668
+mnt-by:             YZTCFH-MNT
+source:             DN42
+max-length:         27
\ No newline at end of file