diff --git a/data/mntner/BLACKHOLE-TW-MNT b/data/mntner/BLACKHOLE-TW-MNT
deleted file mode 100644
index 64a97acec..000000000
--- a/data/mntner/BLACKHOLE-TW-MNT
+++ /dev/null
@@ -1,6 +0,0 @@
-mntner:             BLACKHOLE-TW-MNT
-descr:              Blackhole.tw
-admin-c:            BLACKHOLE-DN42
-tech-c:             BLACKHOLE-DN42
-mnt-by:             BLACKHOLE-TW-MNT
-source:             DN42
diff --git a/data/organisation/ORG-BLACKHOLE b/data/organisation/ORG-BLACKHOLE
deleted file mode 100644
index 5226ce495..000000000
--- a/data/organisation/ORG-BLACKHOLE
+++ /dev/null
@@ -1,6 +0,0 @@
-organisation:       ORG-BLACKHOLE
-org-name:           Blackhole Network LTD.
-admin-c:            BLACKHOLE-DN42
-tech-c:             BLACKHOLE-DN42
-mnt-by:             BLACKHOLE-TW-MNT
-source:             DN42
diff --git a/data/person/BLACKHOLE-DN42 b/data/person/BLACKHOLE-DN42
deleted file mode 100644
index 7cd609d01..000000000
--- a/data/person/BLACKHOLE-DN42
+++ /dev/null
@@ -1,5 +0,0 @@
-person:             Frank Chang
-contact:            frank@csie.io
-nic-hdl:            BLACKHOLE-DN42
-mnt-by:             BLACKHOLE-TW-MNT
-source:             DN42