International Direct Dial (IDD) Call

Frequent overseas callers


Like to keep your overseas calls short and sweet?

Then sign up for 1511CHAT, and ensure frequent contact with your overseas family and friends.

Cut your international phone charges by up to 96%

No contract

Enjoy IDD rates as low as 5¢ per minute

No subscription charges

Crystal-clear voice quality for all your overseas calls

Free registration

No Talk No Pay – Your call is free if it's eight seconds or less

Pay as you use


As a home user, you’re automatically put on 123FREE. However, you’re free to switch to 1511CHAT or another service plan anytime
by logging in to your account, as long as you’re not bound by any existing promotional obligations.

Receive a very special sign-up treat when you create a ZONE account.


User Guide

Using ZONE1511 IDD is easy!

ZONE1511 IDD service is available with all existing fixed, mobile or fax telephone numbers from any operator (Singtel / M1 / StarHub). 
Upon registration with ZONE1511, you will be able to call any overseas number directly, by simply adding the prefix "1511".

Eg., to call Kuala Lumpur in Malaysia, simply dial 151160312345678.


We are happy to answer any questions.

Just send us a message by clicking the contact us now button.