International Direct Dial (IDD) Call

Make the right call with up to 88% savings

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  • Australia - $0.15
  • China - $0.16
  • Hong Kong - $0.16
  • India - $0.55
  • Jakarta - $0.27
  • Johor Bahru - $0.12
  • Philippines - $0.35
  • Taiwan - $0.20
  • USA - $0.15


What's better for your bottom line than the highest quality
purchased at the lowest price?

Switch to 1511BIZ service plan for the most competitive IDD rates in town!

Save up to 88% on your international call charges

No subscription charges

Enjoy ZONE1511's trademark 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, No contract


As a corporate customer, you're automatically put on 1511BIZ. However, you're free to switch to another service plan anytime
by logging in to your account, as long as you're not bound by any existing promotional obligations.


Recommended for businesses

Economy plan for the budget-conscious.


Alternatively, you may download the Application Form.


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.