diff --git a/core/core.js b/core/core.js
index 10981c41..3523909b 100644
--- a/core/core.js
+++ b/core/core.js
@@ -47,6 +47,11 @@ const k_global_settings = {
 		default_value: '/~core/apps/',
 		description: 'Default path.',
 	},
+	index_map: {
+		type: 'textarea',
+		default_value: undefined,
+		description: 'Mappings from hostname to redirect path, one per line, as in: "www.tildefriends.net=/~core/index/"',
+	},
 	room: {
 		type: 'boolean',
 		default_value: true,
@@ -951,6 +956,17 @@ loadSettings().then(function() {
 	httpd.all("", function(request, response) {
 		let match;
 		if (request.uri === "/" || request.uri === "") {
+			try {
+				for (let line of (gGlobalSettings.index_map || '').split('\n')) {
+					let parts = line.split('=');
+					if (parts.length == 2 && request.headers.host.match(new RegExp(parts[0], 'i'))) {
+						response.writeHead(303, {"Location": (request.client.tls ? 'https://' : 'http://') + request.headers.host + parts[1], "Content-Length": "0"});
+						return response.end();
+					}
+				}
+			} catch (e) {
+				print(e);
+			}
 			response.writeHead(303, {"Location": (request.client.tls ? 'https://' : 'http://') + request.headers.host + gGlobalSettings.index, "Content-Length": "0"});
 			return response.end();
 		} else if (match = /^(\/~[^\/]+\/[^\/]+)(\/?.*)$/.exec(request.uri)) {