diff --git a/src/apptask.js b/src/apptask.js
index 3cb4d1170..e384a901a 100644
--- a/src/apptask.js
+++ b/src/apptask.js
@@ -246,12 +246,10 @@ function downloadIcon(app, callback) {
 function registerSubdomain(app, callback) {
     // even though the bare domain is already registered in the appstore, we still
     // need to register it so that we have a dnsRecordId to wait for it to complete
-    var record = { subdomain: app.location, type: 'A', value: sysinfo.getIp() };
-
     async.retry({ times: 200, interval: 5000 }, function (retryCallback) {
         debugApp(app, 'Registering subdomain location [%s]', app.location);
 
-        subdomains.add(record, function (error, changeId) {
+        subdomains.add(app.location, 'A', [ sysinfo.getIp() ], function (error, changeId) {
             if (error && (error.reason === SubdomainError.STILL_BUSY || error.reason === SubdomainError.EXTERNAL_ERROR)) return retryCallback(error); // try again
 
             retryCallback(null, error || changeId);
diff --git a/src/dns/caas.js b/src/dns/caas.js
index 647286231..5da124327 100644
--- a/src/dns/caas.js
+++ b/src/dns/caas.js
@@ -3,7 +3,7 @@
 'use strict';
 
 exports = module.exports = {
-    addSubdomain: addSubdomain,
+    add: add,
     delSubdomain: delSubdomain,
     updateSubdomain: updateSubdomain,
     getChangeStatus: getChangeStatus,
@@ -17,20 +17,20 @@ var assert = require('assert'),
     superagent = require('superagent'),
     util = require('util');
 
-function addSubdomain(zoneName, subdomain, type, value, callback) {
+function add(zoneName, subdomain, type, values, callback) {
     assert.strictEqual(typeof zoneName, 'string');
     assert.strictEqual(typeof subdomain, 'string');
     assert.strictEqual(typeof type, 'string');
-    assert.strictEqual(typeof value, 'string');
+    assert(util.isArray(values));
     assert.strictEqual(typeof callback, 'function');
 
     var fqdn = subdomain !== '' && type === 'TXT' ? subdomain + '.' + config.fqdn() : config.appFqdn(subdomain);
 
-    debug('addSubdomain: zoneName: %s subdomain: %s type: %s value: %s fqdn: %s', zoneName, subdomain, type, value, fqdn);
+    debug('add: %s for zone %s of type %s with values %j', subdomain, zoneName, type, values);
 
     var data = {
         type: type,
-        values: [ value ]
+        values: values
     };
 
     superagent
@@ -46,7 +46,6 @@ function addSubdomain(zoneName, subdomain, type, value, callback) {
         });
 }
 
-
 function getSubdomain(zoneName, subdomain, type, callback) {
     assert.strictEqual(typeof zoneName, 'string');
     assert.strictEqual(typeof subdomain, 'string');
diff --git a/src/dns/route53.js b/src/dns/route53.js
index 7a0d940b2..71417cca5 100644
--- a/src/dns/route53.js
+++ b/src/dns/route53.js
@@ -3,7 +3,7 @@
 'use strict';
 
 exports = module.exports = {
-    addSubdomain: addSubdomain,
+    add: add,
     delSubdomain: delSubdomain,
     updateSubdomain: updateSubdomain,
     getChangeStatus: getChangeStatus
@@ -14,7 +14,8 @@ var assert = require('assert'),
     config = require('../config.js'),
     debug = require('debug')('box:dns/route53'),
     settings = require('../settings.js'),
-    SubdomainError = require('../subdomainerror.js');
+    SubdomainError = require('../subdomainerror.js'),
+    util = require('util');
 
 function getDnsCredentials(callback) {
     assert.strictEqual(typeof callback, 'function');
@@ -60,16 +61,14 @@ function getZoneByName(zoneName, callback) {
     });
 }
 
-function addSubdomain(zoneName, subdomain, type, value, callback) {
+function add(zoneName, subdomain, type, values, callback) {
     assert.strictEqual(typeof zoneName, 'string');
     assert.strictEqual(typeof subdomain, 'string');
     assert.strictEqual(typeof type, 'string');
-    assert.strictEqual(typeof value, 'string');
+    assert(util.isArray(values));
     assert.strictEqual(typeof callback, 'function');
 
-    debug('addSubdomain: ' + subdomain + ' for domain ' + zoneName + ' with value ' + value);
-
-    var values = [ value ];
+    debug('add: %s for zone %s of type %s with values %j', subdomain, zoneName, type, values);
 
     getZoneByName(zoneName, function (error, zone) {
         if (error) return callback(error);
diff --git a/src/subdomains.js b/src/subdomains.js
index 6caedebba..45db20334 100644
--- a/src/subdomains.js
+++ b/src/subdomains.js
@@ -7,7 +7,8 @@ var assert = require('assert'),
     config = require('./config.js'),
     debug = require('debug')('box:subdomains'),
     route53 = require('./dns/route53.js'),
-    SubdomainError = require('./subdomainerror.js');
+    SubdomainError = require('./subdomainerror.js'),
+    util = require('util');
 
 module.exports = exports = {
     add: add,
@@ -22,16 +23,13 @@ function api() {
     return config.isCustomDomain() || config.TEST ? route53 : caas;
 }
 
-function add(record, callback) {
-    assert.strictEqual(typeof record, 'object');
-    assert.strictEqual(typeof record.subdomain, 'string');
-    assert.strictEqual(typeof record.type, 'string');
-    assert.strictEqual(typeof record.value, 'string');
+function add(subdomain, type, values, callback) {
+    assert.strictEqual(typeof subdomain, 'string');
+    assert.strictEqual(typeof type, 'string');
+    assert(util.isArray(values));
     assert.strictEqual(typeof callback, 'function');
 
-    debug('add: ', record);
-
-    api().addSubdomain(config.zoneName(), record.subdomain, record.type, record.value, function (error, changeId) {
+    api().add(config.zoneName(), subdomain, type, values, function (error, changeId) {
         if (error) return callback(error);
         callback(null, changeId);
     });