diff --git a/etc/unbound/unbound.conf.d/blocklist.conf b/etc/unbound/unbound.conf.d/blocklist.conf
new file mode 100644
index 00000000..3510c1cd
--- /dev/null
+++ b/etc/unbound/unbound.conf.d/blocklist.conf
@@ -0,0 +1,10 @@
+# This domain NXDOMAINS the domains listed.
+
+# Riot.im communicates with the domains below a bit too happily. These are
+# a bit controversial, so I am keeping them commented in git.
+#local-zone: "matrix.org" static
+#local-zone: "modular.im" static
+#local-zone: "vector.im" static
+
+# THROWAWAY
+local-zone: "publicbt.com" static