diff --git a/lib/middleware.js b/lib/middleware.js
index 74e2f3f1..fb04ccc1 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -8,7 +8,13 @@ const normalizeJambones = require('./utils/normalize-jambones');
 const dbUtils = require('./utils/db-utils');
 
 module.exports = function(srf, logger) {
-  const {lookupAppByPhoneNumber, lookupAppBySid, lookupAppByRealm, lookupAppByTeamsTenant}  = srf.locals.dbHelpers;
+  const {
+    lookupAppByPhoneNumber,
+    lookupAppByRegex,
+    lookupAppBySid,
+    lookupAppByRealm,
+    lookupAppByTeamsTenant
+  }  = srf.locals.dbHelpers;
   const {lookupAccountDetails} = dbUtils(logger, srf);
   function initLocals(req, res, next) {
     const callSid = req.has('X-Retain-Call-Sid') ? req.get('X-Retain-Call-Sid') : uuidv4();
@@ -115,6 +121,11 @@ module.exports = function(srf, logger) {
         else {
           const voip_carrier_sid = req.get('X-Voip-Carrier-Sid');
           app = await lookupAppByPhoneNumber(req.locals.calledNumber, voip_carrier_sid);
+
+          if (!app) {
+            /* lookup by call_routes.regex */
+            app = await lookupAppByRegex(req.locals.calledNumber, account_sid);
+          }
         }
       }
 
diff --git a/lib/utils/install-srf-locals.js b/lib/utils/install-srf-locals.js
index 2804149c..bba41c3e 100644
--- a/lib/utils/install-srf-locals.js
+++ b/lib/utils/install-srf-locals.js
@@ -112,6 +112,7 @@ function installSrfLocals(srf, logger) {
   const {
     pool,
     lookupAppByPhoneNumber,
+    lookupAppByRegex,
     lookupAppBySid,
     lookupAppByRealm,
     lookupAppByTeamsTenant,
@@ -166,6 +167,7 @@ function installSrfLocals(srf, logger) {
       client,
       pool,
       lookupAppByPhoneNumber,
+      lookupAppByRegex,
       lookupAppBySid,
       lookupAppByRealm,
       lookupAppByTeamsTenant,
diff --git a/package-lock.json b/package-lock.json
index e490e008..9f241ac8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "version": "v0.7.0",
       "license": "MIT",
       "dependencies": {
-        "@jambonz/db-helpers": "^0.6.15",
+        "@jambonz/db-helpers": "^0.6.16",
         "@jambonz/mw-registrar": "^0.2.1",
         "@jambonz/realtimedb-helpers": "^0.4.10",
         "@jambonz/stats-collector": "^0.1.5",
@@ -470,9 +470,9 @@
       }
     },
     "node_modules/@jambonz/db-helpers": {
-      "version": "0.6.15",
-      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.15.tgz",
-      "integrity": "sha512-zF9bBn+VIramn24xPPoX6lYbm0gWG6Mj2puEXNb5FyJN1SbxYwnsIHm+mupm2qmi5RXt8TWKXw8oCrhKr3zusA==",
+      "version": "0.6.16",
+      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.16.tgz",
+      "integrity": "sha512-jvQULOgoRorevFoZ4RbKIF7QvswSor5sk+THigEId7uPAlaq/GRKCWdEA1rxEizzhfOAiRT6Qg2tyisZ9eg3aA==",
       "dependencies": {
         "cidr-matcher": "^2.1.1",
         "debug": "^4.3.3",
@@ -5556,9 +5556,9 @@
       "dev": true
     },
     "@jambonz/db-helpers": {
-      "version": "0.6.15",
-      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.15.tgz",
-      "integrity": "sha512-zF9bBn+VIramn24xPPoX6lYbm0gWG6Mj2puEXNb5FyJN1SbxYwnsIHm+mupm2qmi5RXt8TWKXw8oCrhKr3zusA==",
+      "version": "0.6.16",
+      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.16.tgz",
+      "integrity": "sha512-jvQULOgoRorevFoZ4RbKIF7QvswSor5sk+THigEId7uPAlaq/GRKCWdEA1rxEizzhfOAiRT6Qg2tyisZ9eg3aA==",
       "requires": {
         "cidr-matcher": "^2.1.1",
         "debug": "^4.3.3",
diff --git a/package.json b/package.json
index 782e5be3..5ee65d20 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "jslint": "eslint app.js lib"
   },
   "dependencies": {
-    "@jambonz/db-helpers": "^0.6.15",
+    "@jambonz/db-helpers": "^0.6.16",
     "@jambonz/mw-registrar": "^0.2.1",
     "@jambonz/realtimedb-helpers": "^0.4.10",
     "@jambonz/stats-collector": "^0.1.5",