diff --git a/lib/middleware.js b/lib/middleware.js
index 74df973c..74e2f3f1 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -112,7 +112,10 @@ module.exports = function(srf, logger) {
             logger.error(err, `Error retrieving transferred call app for ${arr[1]}`);
           }
         }
-        else app = await lookupAppByPhoneNumber(req.locals.calledNumber);
+        else {
+          const voip_carrier_sid = req.get('X-Voip-Carrier-Sid');
+          app = await lookupAppByPhoneNumber(req.locals.calledNumber, voip_carrier_sid);
+        }
       }
 
       if (!app || !app.call_hook || !app.call_hook.url) {
diff --git a/package-lock.json b/package-lock.json
index 226957b0..e490e008 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "version": "v0.7.0",
       "license": "MIT",
       "dependencies": {
-        "@jambonz/db-helpers": "^0.6.14",
+        "@jambonz/db-helpers": "^0.6.15",
         "@jambonz/mw-registrar": "^0.2.1",
         "@jambonz/realtimedb-helpers": "^0.4.10",
         "@jambonz/stats-collector": "^0.1.5",
@@ -470,13 +470,13 @@
       }
     },
     "node_modules/@jambonz/db-helpers": {
-      "version": "0.6.14",
-      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.14.tgz",
-      "integrity": "sha512-dWUjDb2If9NwUpUxlAJ4PbIWRyA1gZTkmiICix/f76yAF5aGCf0hgOiYXlh335BRYsX5By41yS7DkLXaTxbx9g==",
+      "version": "0.6.15",
+      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.15.tgz",
+      "integrity": "sha512-zF9bBn+VIramn24xPPoX6lYbm0gWG6Mj2puEXNb5FyJN1SbxYwnsIHm+mupm2qmi5RXt8TWKXw8oCrhKr3zusA==",
       "dependencies": {
         "cidr-matcher": "^2.1.1",
-        "debug": "^4.3.1",
-        "mysql2": "^2.2.5",
+        "debug": "^4.3.3",
+        "mysql2": "^2.3.3",
         "uuid": "^8.3.2"
       }
     },
@@ -1300,9 +1300,9 @@
       }
     },
     "node_modules/debug": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
-      "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+      "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
       "dependencies": {
         "ms": "2.1.2"
       },
@@ -3472,13 +3472,13 @@
       "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "node_modules/mysql2": {
-      "version": "2.2.5",
-      "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-2.2.5.tgz",
-      "integrity": "sha512-XRqPNxcZTpmFdXbJqb+/CtYVLCx14x1RTeNMD4954L331APu75IC74GDqnZMEt1kwaXy6TySo55rF2F3YJS78g==",
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-2.3.3.tgz",
+      "integrity": "sha512-wxJUev6LgMSgACDkb/InIFxDprRa6T95+VEoR+xPvtngtccNH2dGjEB/fVZ8yg1gWv1510c9CvXuJHi5zUm0ZA==",
       "dependencies": {
-        "denque": "^1.4.1",
+        "denque": "^2.0.1",
         "generate-function": "^2.3.1",
-        "iconv-lite": "^0.6.2",
+        "iconv-lite": "^0.6.3",
         "long": "^4.0.0",
         "lru-cache": "^6.0.0",
         "named-placeholders": "^1.1.2",
@@ -3489,10 +3489,18 @@
         "node": ">= 8.0"
       }
     },
+    "node_modules/mysql2/node_modules/denque": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/denque/-/denque-2.0.1.tgz",
+      "integrity": "sha512-tfiWc6BQLXNLpNiR5iGd0Ocu3P3VpxfzFiqubLgMfhfOw9WyvgJBd46CClNn9k3qfbjvT//0cf7AlYRX/OslMQ==",
+      "engines": {
+        "node": ">=0.10"
+      }
+    },
     "node_modules/mysql2/node_modules/iconv-lite": {
-      "version": "0.6.2",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
-      "integrity": "sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==",
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
       "dependencies": {
         "safer-buffer": ">= 2.1.2 < 3.0.0"
       },
@@ -5548,13 +5556,13 @@
       "dev": true
     },
     "@jambonz/db-helpers": {
-      "version": "0.6.14",
-      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.14.tgz",
-      "integrity": "sha512-dWUjDb2If9NwUpUxlAJ4PbIWRyA1gZTkmiICix/f76yAF5aGCf0hgOiYXlh335BRYsX5By41yS7DkLXaTxbx9g==",
+      "version": "0.6.15",
+      "resolved": "https://registry.npmjs.org/@jambonz/db-helpers/-/db-helpers-0.6.15.tgz",
+      "integrity": "sha512-zF9bBn+VIramn24xPPoX6lYbm0gWG6Mj2puEXNb5FyJN1SbxYwnsIHm+mupm2qmi5RXt8TWKXw8oCrhKr3zusA==",
       "requires": {
         "cidr-matcher": "^2.1.1",
-        "debug": "^4.3.1",
-        "mysql2": "^2.2.5",
+        "debug": "^4.3.3",
+        "mysql2": "^2.3.3",
         "uuid": "^8.3.2"
       }
     },
@@ -6229,9 +6237,9 @@
       }
     },
     "debug": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
-      "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+      "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
       "requires": {
         "ms": "2.1.2"
       }
@@ -7909,13 +7917,13 @@
       "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "mysql2": {
-      "version": "2.2.5",
-      "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-2.2.5.tgz",
-      "integrity": "sha512-XRqPNxcZTpmFdXbJqb+/CtYVLCx14x1RTeNMD4954L331APu75IC74GDqnZMEt1kwaXy6TySo55rF2F3YJS78g==",
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-2.3.3.tgz",
+      "integrity": "sha512-wxJUev6LgMSgACDkb/InIFxDprRa6T95+VEoR+xPvtngtccNH2dGjEB/fVZ8yg1gWv1510c9CvXuJHi5zUm0ZA==",
       "requires": {
-        "denque": "^1.4.1",
+        "denque": "^2.0.1",
         "generate-function": "^2.3.1",
-        "iconv-lite": "^0.6.2",
+        "iconv-lite": "^0.6.3",
         "long": "^4.0.0",
         "lru-cache": "^6.0.0",
         "named-placeholders": "^1.1.2",
@@ -7923,10 +7931,15 @@
         "sqlstring": "^2.3.2"
       },
       "dependencies": {
+        "denque": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/denque/-/denque-2.0.1.tgz",
+          "integrity": "sha512-tfiWc6BQLXNLpNiR5iGd0Ocu3P3VpxfzFiqubLgMfhfOw9WyvgJBd46CClNn9k3qfbjvT//0cf7AlYRX/OslMQ=="
+        },
         "iconv-lite": {
-          "version": "0.6.2",
-          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
-          "integrity": "sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==",
+          "version": "0.6.3",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+          "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
           "requires": {
             "safer-buffer": ">= 2.1.2 < 3.0.0"
           }
diff --git a/package.json b/package.json
index 4c687df5..782e5be3 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "jslint": "eslint app.js lib"
   },
   "dependencies": {
-    "@jambonz/db-helpers": "^0.6.14",
+    "@jambonz/db-helpers": "^0.6.15",
     "@jambonz/mw-registrar": "^0.2.1",
     "@jambonz/realtimedb-helpers": "^0.4.10",
     "@jambonz/stats-collector": "^0.1.5",