diff --git a/lib/resources/Accounts.js b/lib/resources/Accounts.js
index fa4dca4d80..7650026726 100644
--- a/lib/resources/Accounts.js
+++ b/lib/resources/Accounts.js
@@ -65,7 +65,13 @@ module.exports = function (client) {
                     ['GET','POST','DELETE',{update:'POST'}],
                     ['GET','POST',{create:'POST'}]
                 )
+            },
+            sip:{
+                domains:require('./sip/Domains')(client, sid),
+                ipAccessControlLists:require('./sip/IpAccessControlLists')(client,sid),
+                credentialLists:require('./sip/CredentialLists')(client,sid)
             }
+
         };
 
         //Add resources to Accounts.* or Accounts(sid).*
diff --git a/lib/resources/sip/CredentialLists.js b/lib/resources/sip/CredentialLists.js
new file mode 100644
index 0000000000..800b864e63
--- /dev/null
+++ b/lib/resources/sip/CredentialLists.js
@@ -0,0 +1,36 @@
+/**
+ @module resources/sip/CredentialLists
+ The Twilio "CredentialLists" Resource.
+ */
+var generate = require('../generate'),
+    ListInstanceResource = require('../ListInstanceResource');
+
+module.exports = function (client, accountSid) {
+    var baseResourceUrl = '/Accounts/' + accountSid + '/SIP/CredentialLists';
+
+    //Instance requests
+    function CredentialLists(sid) {
+        var resourceApi = {}
+
+        generate.restFunctions(resourceApi, client,
+            ['GET', 'POST', 'DELETE', {update: 'POST'}],
+            baseResourceUrl + '/' + sid
+        );
+
+        resourceApi.credentials = ListInstanceResource(client, accountSid,
+            'SIP/CredentialLists/' + sid + '/Credentials',
+            ['GET', 'POST', 'DELETE', {update: 'POST'}],
+            ['GET', 'POST', {list: 'GET'}, {create: 'POST'}]
+        );
+
+        return resourceApi;
+    }
+
+    generate.restFunctions(CredentialLists, client,
+        ['GET', 'POST', {create: 'POST'}, {list: 'GET'}],
+        baseResourceUrl
+    );
+
+    return CredentialLists;
+
+}
diff --git a/lib/resources/sip/Domains.js b/lib/resources/sip/Domains.js
new file mode 100644
index 0000000000..9b29921311
--- /dev/null
+++ b/lib/resources/sip/Domains.js
@@ -0,0 +1,41 @@
+/**
+ @module resources/sip/Domains
+ The Twilio "Domains" Resource.
+ */
+var generate = require('../generate'),
+    ListInstanceResource = require('../ListInstanceResource');
+
+module.exports = function (client, accountSid) {
+    var baseResourceUrl = '/Accounts/' + accountSid + '/SIP/Domains';
+
+    //Instance requests
+    function Domains(sid) {
+        var resourceApi = {}
+
+        generate.restFunctions(resourceApi, client,
+            ['GET', 'POST', 'DELETE', {update: 'POST'}],
+            baseResourceUrl + '/' + sid
+        );
+
+        resourceApi.ipAccessControlListMappings = ListInstanceResource(client, accountSid,
+            'SIP/Domains/' + sid + '/IpAccessControlListMappings',
+            ['GET', 'DELETE'],
+            ['GET', 'POST', {create:'POST'}, {list: 'GET'}]
+        );
+
+        resourceApi.credentialListMappings = ListInstanceResource(client, accountSid,
+            'SIP/Domains/' + sid + '/CredentialListMappings',
+            ['GET', 'DELETE'],
+            ['GET', 'POST', {create:'POST'}, {list: 'GET'}]
+        );
+
+        return resourceApi;
+    };
+
+    generate.restFunctions(Domains, client,
+        ['GET', 'POST', {create: 'POST'}, {list: 'GET'}],
+        baseResourceUrl
+    );
+
+    return Domains;
+}
diff --git a/lib/resources/sip/IpAccessControlLists.js b/lib/resources/sip/IpAccessControlLists.js
new file mode 100644
index 0000000000..6988d7d3e3
--- /dev/null
+++ b/lib/resources/sip/IpAccessControlLists.js
@@ -0,0 +1,37 @@
+/**
+ @module resources/sip/IpAccessControlLists
+ The Twilio "IpAccessControlLists" Resource.
+ */
+var generate = require('../generate'),
+    ListInstanceResource = require('../ListInstanceResource');
+
+module.exports = function (client, accountSid) {
+    var baseResourceUrl = '/Accounts/' + accountSid + '/SIP/IpAccessControlLists';
+
+    //Instance requests
+    function IpAccessControlLists(sid) {
+        var resourceApi = {}
+
+        generate.restFunctions(resourceApi, client,
+            ['GET', 'POST', 'DELETE', {update: 'POST'}],
+            baseResourceUrl + '/' + sid
+        );
+
+        resourceApi.ipAddresses = ListInstanceResource(client, accountSid,
+            'SIP/IpAccessControlLists/' + sid + '/IpAddresses',
+            ['GET', 'POST', 'DELETE', {update: 'POST'}],
+            ['GET', 'POST', {list: 'GET'}, {create: 'POST'}]
+        );
+
+        return resourceApi;
+    }
+
+    generate.restFunctions(IpAccessControlLists, client,
+        ['GET', 'POST', {create: 'POST'}, {list: 'GET'}],
+        baseResourceUrl
+    );
+
+
+    return IpAccessControlLists;
+
+}