What is the country code for SG?

The country code for Singapore (SG) is +65.

How are mobile numbers structured in SG?

Mobile numbers in Singapore are 8 digits long and start with either '8' or '9'. The format is [8XXX XXXX] or [9XXX XXXX].

What are the dialing procedures for international calls to SG?

To call a number in Singapore from abroad, you need to dial the international access code (e.g., 00), followed by Singapore's country code (+65), and then the 8-digit local number. For example, to call a Singapore mobile number, you would dial: +65 [8-digit number].

Is number portability available in SG?

Yes, Singapore has implemented number portability for both mobile and fixed-line numbers since 2003, allowing subscribers to retain their existing phone numbers when switching service providers.

Which major telecom operators are active in SG and what are their number ranges?

The major telecom operators in Singapore are Singtel, StarHub, and M1. Singtel uses the number prefixes 6, 8, and 9, while StarHub and M1 use prefixes 8 and 9.

What is the country code for Singapore?

The country code for Singapore is +65.

How long are phone numbers in Singapore?

Phone numbers in Singapore are 8 digits long.

Are there area codes in Singapore?

No, Singapore uses a closed numbering plan without area codes.

What prefix is used for landline numbers in Singapore?

Landline numbers in Singapore start with the prefix '6'.

What prefixes are used for mobile numbers in Singapore?

Mobile numbers in Singapore start with the prefixes '8' or '9'.

How do you dial an international call from Singapore?

To dial an international call from Singapore, use the format '00' + [Country Code] + [Subscriber Number].

How do you dial a local call within Singapore?

For local calls within Singapore, simply dial the 8-digit number directly.

What is the prefix for toll-free numbers in Singapore?

Toll-free numbers in Singapore use the prefix '800'.

What is the prefix for premium rate numbers in Singapore?

Premium rate numbers in Singapore use the prefix '1900'.

Can you keep your phone number when switching providers in Singapore?

Yes, Singapore allows number portability for both mobile and fixed-line numbers.

Who regulates telecommunications in Singapore?

The Info-communications Media Development Authority (IMDA) regulates telecommunications in Singapore.

What are golden numbers in Singapore?

Golden numbers are premium numbers with repeating digits that may be available at a higher cost.

What are the emergency numbers in Singapore?

The emergency numbers in Singapore are 999 for police, 995 for fire/ambulance, and 1777 for non-emergency ambulance.

What is the format for incoming international calls to Singapore?

For incoming international calls to Singapore, use the format '+65' + [Local 8-Digit Number].

What are the major telecom operators in Singapore?

The major telecom operators in Singapore are Singtel, StarHub, and M1.

What is the international dialing prefix for Singapore?

The international dialing prefix for Singapore is '00'.

What is the national dialing prefix for Singapore?

There is no national dialing prefix in Singapore.

What does IMDA stand for?

IMDA stands for Info-communications Media Development Authority.

Does Singapore adhere to international numbering standards?

Yes, Singapore adheres to ITU-T E.164 standards for international numbering.

Where can I find updates on telecommunications regulations in Singapore?

You can find updates on telecommunications regulations in Singapore on the IMDA's official website.

How should I sanitize Singapore phone number inputs in my application?

When sanitizing Singapore phone number inputs, remove spaces, hyphens, the '+' sign, and the '65' country code to ensure consistent validation.

What prefixes are reserved for IoT and M2M devices in Singapore?

In Singapore, the prefixes '1', '4', and '5' are reserved for Internet of Things (IoT) and Machine-to-Machine (M2M) devices.

What is the significance of the '3' prefix in Singapore phone numbers?

The '3' prefix in Singapore phone numbers designates virtual operators offering VoIP (Voice over Internet Protocol) services.

What should I consider when integrating VoIP services with Singapore phone numbers?

When integrating VoIP services, ensure SIP protocol compliance, proper routing for emergency numbers (999, 995), and maintain optimal Quality of Service (QoS) with low latency, jitter, and packet loss.

What historical change impacted Singapore's numbering system and why?

In 2002, Singapore transitioned to an eight-digit numbering system to accommodate rapid growth in telecommunications services following market liberalization in 2000.

How can I validate Singapore phone numbers using JavaScript?

Use a regular expression that checks for 8-digit numbers starting with 6 (landlines), 8 or 9 (mobile), 3 (virtual), 800 (toll-free), 1900 (premium), or 1, 4, or 5 (IoT/M2M), optionally preceded by +65.

What kind of error messages should I show to users when validating SG numbers?

Provide specific and helpful error messages like "Singapore numbers must be 8 digits long," instead of generic messages like "Invalid format."

Are there non-emergency ambulance services available in Singapore and what are their numbers?

Yes, Singapore has a non-emergency ambulance number (1777) and the Ministry of Health's special ambulance service (993), often used for specific health crises.

What key performance metrics should I monitor for VoIP services in Singapore?

Monitor latency (aim for below 150ms), jitter (below 30ms), and packet loss (below 1%) to maintain a high quality of service for VoIP in Singapore.

How does a closed numbering plan simplify phone number validation in Singapore?

A closed numbering plan means no area codes are used within the country, which simplifies validation because you only need to validate the 8-digit local number.

Singapore Phone Numbers: Format, Area Code & Validation Guide

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