diff --git a/data/aut-num/AS4242423076 b/data/aut-num/AS4242423076
new file mode 100644
index 000000000..8bdb28bf3
--- /dev/null
+++ b/data/aut-num/AS4242423076
@@ -0,0 +1,6 @@
+aut-num:            AS4242423076
+as-name:            UNDEFINED-AS
+admin-c:            ERROR-DN42
+tech-c:             ERROR-DN42
+mnt-by:             ERROR-MNT
+source:             DN42
diff --git a/data/inet6num/fddd:f774:1ee::_48 b/data/inet6num/fddd:f774:1ee::_48
new file mode 100644
index 000000000..ae7359222
--- /dev/null
+++ b/data/inet6num/fddd:f774:1ee::_48
@@ -0,0 +1,10 @@
+inet6num:           fddd:f774:01ee:0000:0000:0000:0000:0000 - fddd:f774:01ee:ffff:ffff:ffff:ffff:ffff
+cidr:               fddd:f774:1ee::/48
+netname:            UNDEFINED-NETWORK
+descr:              Network of Error
+country:            DE
+admin-c:            ERROR-DN42
+tech-c:             ERROR-DN42
+mnt-by:             ERROR-MNT
+status:             ASSIGNED
+source:             DN42
diff --git a/data/mntner/ERROR-MNT b/data/mntner/ERROR-MNT
new file mode 100644
index 000000000..c91743fae
--- /dev/null
+++ b/data/mntner/ERROR-MNT
@@ -0,0 +1,6 @@
+mntner:             ERROR-MNT
+admin-c:            ERROR-DN42
+tech-c:             ERROR-DN42
+mnt-by:             ERROR-MNT
+auth:               ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF/+P1q5JyA05ACCi0oKWBifDfNheLNdJnDCkw1IIr0a
+source:             DN42
diff --git a/data/person/ERROR-DN42 b/data/person/ERROR-DN42
new file mode 100644
index 000000000..bb48b43c6
--- /dev/null
+++ b/data/person/ERROR-DN42
@@ -0,0 +1,5 @@
+person:             error
+e-mail:             dn42@undefinedbehavior.de
+nic-hdl:            ERROR-DN42
+mnt-by:             ERROR-MNT
+source:             DN42
diff --git a/data/route6/fddd:f774:1ee::_48 b/data/route6/fddd:f774:1ee::_48
new file mode 100644
index 000000000..b2c46e509
--- /dev/null
+++ b/data/route6/fddd:f774:1ee::_48
@@ -0,0 +1,5 @@
+route6:             fddd:f774:1ee::/48
+origin:             AS4242423076
+max-length:         48
+mnt-by:             ERROR-MNT
+source:             DN42