diff --git a/lib/dns/include/dns/events.h b/lib/dns/include/dns/events.h
new file mode 100644
index 0000000000..a18e301bf5
--- /dev/null
+++ b/lib/dns/include/dns/events.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef DNS_EVENTS_H
+#define DNS_EVENTS_H 1
+
+#include <isc/eventclass.h>
+#include <isc/lang.h>
+
+/*
+ * Registry of DNS event numbers.
+ */
+
+ISC_LANG_BEGINDECLS
+
+#define DNS_EVENT_FETCH				(ISC_EVENTCLASS_DNS + 0)
+#define DNS_EVENT_FETCHDONE			(ISC_EVENTCLASS_DNS + 1)
+#define DNS_EVENT_FIND				(ISC_EVENTCLASS_DNS + 2)
+#define DNS_EVENT_FINDDONE			(ISC_EVENTCLASS_DNS + 3)
+#define DNS_EVENT_QUERY				(ISC_EVENTCLASS_DNS + 4)
+#define DNS_EVENT_QUERYDONE			(ISC_EVENTCLASS_DNS + 5)
+
+#define DNS_EVENT_FIRSTEVENT			(ISC_EVENTCLASS_DNS + 0)
+#define DNS_EVENT_LASTEVENT			(ISC_EVENTCLASS_DNS + 65535)
+
+ISC_LANG_ENDDECLS
+
+#endif /* DNS_EVENTS_H */