diff --git a/birdwatcher.go b/birdwatcher.go
index 68f29b8..10df647 100644
--- a/birdwatcher.go
+++ b/birdwatcher.go
@@ -94,6 +94,10 @@ func makeRouter(config endpoints.ServerConfig) *httprouter.Router {
 		r.GET("/route/net/:net", endpoints.Endpoint(endpoints.RouteNet))
 		r.GET("/route/net/:net/table/:table", endpoints.Endpoint(endpoints.RouteNetTable))
 	}
+	if isModuleEnabled("route_net_mask", whitelist) {
+		r.GET("/route/net/:net/mask/:mask", endpoints.Endpoint(endpoints.RouteNetMask))
+		r.GET("/route/net/:net/mask/:mask/table/:table", endpoints.Endpoint(endpoints.RouteNetMaskTable))
+	}
 	if isModuleEnabled("routes_pipe_filtered_count", whitelist) {
 		r.GET("/routes/pipe/filtered/count", endpoints.Endpoint(endpoints.PipeRoutesFilteredCount))
 	}
diff --git a/endpoints/filter.go b/endpoints/filter.go
index a29316b..406cb87 100644
--- a/endpoints/filter.go
+++ b/endpoints/filter.go
@@ -53,3 +53,7 @@ func ValidateProtocolParam(value string) (string, error) {
 func ValidatePrefixParam(value string) (string, error) {
 	return ValidateLengthAndCharset(value, 80, "1234567890abcdef.:/")
 }
+
+func ValidateNetMaskParam(value string) (string, error) {
+	return ValidateLengthAndCharset(value, 3, "1234567890")
+}
diff --git a/endpoints/routes.go b/endpoints/routes.go
index fd3e85a..4d7a93d 100644
--- a/endpoints/routes.go
+++ b/endpoints/routes.go
@@ -126,6 +126,20 @@ func RouteNet(r *http.Request, ps httprouter.Params, useCache bool) (bird.Parsed
 	return bird.RoutesLookupTable(useCache, net, "master")
 }
 
+func RouteNetMask(r *http.Request, ps httprouter.Params, useCache bool) (bird.Parsed, bool) {
+	net, err := ValidatePrefixParam(ps.ByName("net"))
+	if err != nil {
+		return bird.Parsed{"error": fmt.Sprintf("%s", err)}, false
+	}
+
+	mask, err := ValidateNetMaskParam(ps.ByName("mask"))
+	if err != nil {
+		return bird.Parsed{"error": fmt.Sprintf("%s", err)}, false
+	}
+
+	return bird.RoutesLookupTable(useCache, net+"/"+mask, "master")
+}
+
 func RouteNetTable(r *http.Request, ps httprouter.Params, useCache bool) (bird.Parsed, bool) {
 	net, err := ValidatePrefixParam(ps.ByName("net"))
 	if err != nil {
@@ -140,6 +154,25 @@ func RouteNetTable(r *http.Request, ps httprouter.Params, useCache bool) (bird.P
 	return bird.RoutesLookupTable(useCache, net, table)
 }
 
+func RouteNetMaskTable(r *http.Request, ps httprouter.Params, useCache bool) (bird.Parsed, bool) {
+	net, err := ValidatePrefixParam(ps.ByName("net"))
+	if err != nil {
+		return bird.Parsed{"error": fmt.Sprintf("%s", err)}, false
+	}
+
+	mask, err := ValidateNetMaskParam(ps.ByName("mask"))
+	if err != nil {
+		return bird.Parsed{"error": fmt.Sprintf("%s", err)}, false
+	}
+
+	table, err := ValidateProtocolParam(ps.ByName("table"))
+	if err != nil {
+		return bird.Parsed{"error": fmt.Sprintf("%s", err)}, false
+	}
+
+	return bird.RoutesLookupTable(useCache, net+"/"+mask, table)
+}
+
 func PipeRoutesFiltered(r *http.Request, ps httprouter.Params, useCache bool) (bird.Parsed, bool) {
 	qs := r.URL.Query()
 
diff --git a/etc/birdwatcher/birdwatcher.conf b/etc/birdwatcher/birdwatcher.conf
index 3cef56b..ac0bfee 100755
--- a/etc/birdwatcher/birdwatcher.conf
+++ b/etc/birdwatcher/birdwatcher.conf
@@ -32,6 +32,7 @@ allow_uncached = false
 #   route_net
 #   routes_pipe_filtered_count
 #   routes_pipe_filtered
+#   route_net_mask
 
 
 modules_enabled = ["status",