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Singapore +65

International code · Asia

How to dial

Calling from abroad +65 8123 4567

Dial +65, then the local number. E.g. the landline 6123 4567 is dialled from abroad as +65 6123 4567. Generate the full number →

Calling a mobile locally 8123 4567

No trunk prefix — dial local and long distance numbers directly.

Mobile length
8 digits
Mobile prefixes
XXXX XXXX
Landline format
XXXX XXXXe.g. 6123 4567
International format
+65 XXXX XXXX
Domestic trunk
(none)

Sign-up availability

What to expect when signing up for these services with a physical SIM from this country:

ChatGPT Works
Claude Works
WhatsApp Works
Telegram Works
LINE Works
WeChat Works
X Works
TikTok Works
Gemini Works

Applies to every platform: VoIP / virtual numbers and heavily-reused number pools get rejected. Physical SIM only.

Checked 2026-09-12. Platform region policies and number-range allocations change — always confirm against each platform’s official supported-regions list and the carrier’s notices.
2 sources
help.openai.com/articles/7947663support.google.com/gemini?p=gemini_web_availability

How to read a number

+6581234567

+65Country code
Singapore.
8First digit
Shows the service type: 8 and 9 are mobile, 6 is fixed line, 3 is VoIP.
1234567Remaining 7 digits
Allocated to carriers in blocks; with number portability you can’t tell the current carrier.

Singapore has no area codes or trunk prefix — dial all 8 digits. VoIP numbers starting with 3 are often rejected at sign-up.

This section checked 2026-09-13.
2 sources
www.imda.gov.sg/-/media/imda/files/regulation-licensing-and-consultations/frameworks-and-policies/numbering/national-numbering-plan-and-allocation-process/national-numbering-scheme-23-oct-2017.pdfimda.gov.sg/news-and-events/Media-Room/archived/ida/Media-Releases/2005/20050706170936

Number ranges & quality

RangeTypeNotes
Starts with 8 / 9 (8 digits) Mobile carrier Singapore mobile numbers are 8 digits.
Intl SMSStable
Virtual-number riskLow
ID requiredRegistration is mandatory, with at most three prepaid SIMs per ID across all operators; since 15 July 2024 passport-registered prepaid SIMs are valid for at most 30 days.

Physical SIMs can sign up without issues.

Carriers & prefixes

Mobile prefixes by carrier.

Number portability applies — a prefix only shows the original carrier.

Porting rules in full

Full portability since June 2008.

  • Singtel Mobile carrier

    Notable brands: GOMO

  • StarHub Mobile carrier

    Notable brands: giga!

  • M1 Mobile carrier
  • Simba Mobile carrier

    Formerly TPG Telecom Singapore.

This section checked 2026-09-13.
2 sources
www.imda.gov.sg/Content-and-News/Press-Releases-and-Speeches/archived/ida/Press-Releases/2008/20080416085608dollarsandsense.sg/mobile-virtual-network-operator-mvno

SIM cards & keeping a number

Every prepaid SIM in Singapore must be registered, with at most three prepaid SIMs per ID document across all operators. The key rule: since 15 July 2024 (IMDA), a passport-registered prepaid SIM is valid for at most 30 days. To keep it, Singtel requires re-registration at a shop with a Singapore IC or work pass within 30 days; SIMBA requires renewal with your passport at an authorised centre within 30 days, not online.

Read more

So tourists with only a passport effectively can’t keep a Singapore number while abroad — the old tip of “top up a hi!Card to keep the number” no longer works for visitors.

Singtel hi!Card

Local prepaid
Network
Singtel
Price
Depends on plan and top-up — see the official site
Keeping the number
Passport-registered SIMs last at most 30 days and are then suspended without refund. Holders of a Singapore IC or work pass can re-register at a Singtel shop within 30 days and then extend validity with top-ups like any prepaid card (see the official site for days per top-up).
ID check
Tourists: passport (30 days max); residents: Singapore IC or pass. Max three prepaid SIMs per ID across all operators.
SMS & calls
Singtel (official): outgoing SMS isn’t supported while roaming; incoming SMS depends on 3G availability in the country you’re in

Pros

  • Singapore’s largest operator
  • Long-term use for holders of Singapore ID

Watch out

  • Passport-only tourists lose the SIM after 30 days — it can’t be kept from abroad
  • No outgoing SMS abroad, and incoming SMS needs 3G, which many countries have switched off

Where to buy: singtel.com

5 sources
cdn1.singteldigital.com/content/dam/singtel/personal/products-services/mobile/prepaid-plans/Terms%20&%20Conditions/03_FAQ_20241104.pdfwww.singtel.com/personal/support/prepaid-cardssimba.sg/cis/prepaid/sr18.pdfforum.singaporeexpats.com/viewtopic.php?t=157379cellesim.com/en/blog/singtel-hi-tourist-esim-singapore-guide-passport-rule

From user and blogger reports; platform risk rules change often — treat as a guide only. This section checked 2026-09-15.

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