diff --git a/docs/use-cases/data-residency-set-hostname.md b/docs/use-cases/data-residency-set-hostname.md
index f7ace11b..0fc0927d 100644
--- a/docs/use-cases/data-residency-set-hostname.md
+++ b/docs/use-cases/data-residency-set-hostname.md
@@ -1,8 +1,8 @@
-# Choosing a hostname to send messages to
+# Choosing a data-residency to send messages to
 
 Use the `setDataResidency` setter to specify which host to send to:
 
-Send to EU (hostname: `https://api.eu.sendgrid.com/`)
+Send to EU (data-residency: `https://api.eu.sendgrid.com/`)
 ```js
 const sgMail = require('@sendgrid/mail');
 sgMail.setDataResidency('eu');
@@ -16,7 +16,7 @@ const msg = {
 sgMail.send(msg);
 ```
 Send to Global region, this is also the default host, if the setter is not used
-(hostname: `https://api.sendgrid.com/`)
+(data-residency: `https://api.sendgrid.com/`)
 ```js
 const sgMail = require('@sendgrid/mail');
 sgMail.setDataResidency('global');
@@ -32,7 +32,6 @@ sgMail.send(msg);
 
 ## Limitations
 
-1. Setting the API Key (via `client.setApiKey()`) or Twilio Authentication (via `client.setTwilioEmailAuth()`) will override the hostname to default value. Use the setter call after this set-up.
-2. Emails can only be sent to two hosts for now; 'eu' (https://api.eu.sendgrid.com/) and 'global' (https://api.eu.sendgrid.com/)
-2. The default hostname is https://api.sendgrid.com/
+1. Emails can only be sent to two hosts for now; 'eu' (https://api.eu.sendgrid.com/) and 'global' (https://api.eu.sendgrid.com/)
+2. The default data-residency is https://api.sendgrid.com/
 3. The valid values for `region` in `client.setDataResidency(region)` are only `eu` and `global`. Case-sensitive.
diff --git a/packages/client/src/classes/client.js b/packages/client/src/classes/client.js
index c0c051fe..22357c0b 100644
--- a/packages/client/src/classes/client.js
+++ b/packages/client/src/classes/client.js
@@ -14,7 +14,7 @@ const {
 const API_KEY_PREFIX = 'SG.';
 const SENDGRID_BASE_URL = 'https://api.sendgrid.com/';
 const TWILIO_BASE_URL = 'https://email.twilio.com/';
-
+const SENDGRID_REGION = 'global';
 // Initialize the allowed regions and their corresponding hosts
 const REGION_HOST_MAP = {
   eu: 'https://api.eu.sendgrid.com/',
@@ -24,7 +24,7 @@ class Client {
   constructor() {
     this.auth = '';
     this.impersonateSubuser = '';
-    this.sendgrid_region = '';
+    this.sendgrid_region = SENDGRID_REGION;
 
     this.defaultHeaders = {
       Accept: 'application/json',
@@ -44,10 +44,8 @@ class Client {
 
   setApiKey(apiKey) {
     this.auth = 'Bearer ' + apiKey;
-    // this means that region was never set before
-    if (this.sendgrid_region == '') {
-      this.setDefaultRequest('baseUrl', SENDGRID_BASE_URL);
-    }
+    this.setDefaultRequest('baseUrl', REGION_HOST_MAP[this.sendgrid_region]);
+
     if (!this.isValidApiKey(apiKey)) {
       console.warn(`API key does not start with "${API_KEY_PREFIX}".`);
     }