List of IDD Calling Codes from Singapore to Other Countries

IDD codes are what allow you to dial internationally from Singapore to any destination in the world. Different countries have different codes—and depending on your telecom provider, you'll also need the right IDD prefix.

Providers like Circles.Life, Singtel, StarHub, M1, and Zero1 all support international calling. If you’re looking for affordable, no-fuss connectivity, Circles.Life offers one of the most budget-friendly options with easy-to-use IDD codes and flexible roaming plans.

What is an IDD Code?

An IDD code (International Direct Dialing) is a numeric prefix that enables international calls from one country to another without operator assistance.

How IDD Works in Singapore

To call a number overseas from Singapore, the format you’ll need is:

IDD Prefix + Country Code + Area Code + Local Number

Example: 003 61 2 9876 5432

(This dials Sydney, Australia using Circles.Life's prefix 003)

Common IDD Prefixes in Singapore

Tip: Most smartphones accept the “+” symbol in place of the IDD prefix for convenience—but it’s always good to know your provider’s actual code for billing clarity and compatibility.

Example Dialing Format

IDD Code + Country Code + Area Code + Local Number

Just remember to remove any leading zeroes from area/mobile codes when dialing internationally.

List of IDD Calling Codes from Singapore

Country-Wise Table

✳ Replace XXXXXXXXX with the actual number you're calling.

How to Save on International Calls from Singapore

International calls don’t have to be expensive. Here are some smart ways to keep costs low:

1. Use Budget IDD Services

Opt for providers like Circles.Life (003) or Singtel 018 that offer cost-effective international rates without hidden charges.

2. Leverage VoIP Services

Use WhatsApp, Skype, Zoom, or Google Meet to make voice or video calls over the internet, often free or at minimal data cost.

3. Check Promotions from Telecom Providers

Many providers offer limited-time international calling deals, roaming bundles, or promo packs—especially during holidays.

4. Use Prepaid International Calling Cards

These offer fixed rates and are great if you want to control your calling budget in advance.

Frequently Asked Questions (FAQs)

1. What is the cheapest IDD service from Singapore?

Providers like Circles.Life (003) and Singtel’s 018 are often considered the most affordable. Always check the latest rates and bundles offered.

2. Can I use IDD codes from mobile phones in Singapore?

Yes! Mobile phones accept both IDD prefixes (e.g. 003) and the “+” symbol, which automatically detects the correct prefix based on your provider.

3. Are there alternatives to IDD calls?

Absolutely. You can use VoIP apps like WhatsApp, Viber, Skype, FaceTime, and Zoom for audio/video calls over Wi-Fi or data.

Stay Connected—The Smart Way to Dial Abroad

Knowing your IDD codes can make international calling easy, efficient, and cost-effective. Whether you're staying connected with family or managing business abroad, this guide helps you dial with confidence.

Bookmark this guide so you always have access to the correct codes and formats when you need them.

Share the Savings, Spread the Word

Know someone who frequently calls overseas from Singapore?

Share this guide with them to help save on international calls and avoid dialing errors.And if you're ready for flexible, affordable IDD plans, check out Circles.Life today.