Validate Singapore phone numbers by first sanitizing the input to remove non-numeric characters. Then, use regular expressions designed for each number type (landline, mobile, toll-free, etc.) to check against the cleaned number. The provided JavaScript function offers a robust way to perform this validation and provides details such as number type and formatted output upon successful validation.

Singapore mobile numbers are eight digits long and begin with either 8 or 9. They follow the format 8/9XXXX XXXX. The '8' prefix was introduced later in March 2004 due to growing demand.

Singapore switched to an 8-digit system in 2002 to accommodate the rapid growth of telecommunications after market liberalization in 2000. This replaced the older system with shorter numbers for fixed lines and varying lengths for mobile numbers. This streamlined the system and allowed for more capacity.

The +65 country code is required for international calls to Singapore. For domestic calls within Singapore, the +65 code is optional. It's best practice to sanitize user input to handle both cases effectively in your application.

Yes, the prefix of a Singapore phone number indicates its type. '6' denotes landlines, '8' and '9' are for mobile, '3' signifies virtual operators, '800' is for toll-free numbers, '1900' marks premium-rate services, and '1', '4', and '5' are reserved for IoT and M2M devices.

The Infocomm Media Development Authority (IMDA) governs Singapore's telecommunications landscape and enforces strict numbering conventions. Developers should stay updated on IMDA regulations as changes can impact application functionality.

When integrating VoIP services, ensure appropriate routing for emergency numbers like 999 (Police) and 995 (Fire/Ambulance). Also, consider the non-emergency ambulance number (1777) and the Ministry of Health's ambulance service at 993. This is crucial for any application handling calls.

Always sanitize user input before validating Singapore phone numbers. This involves removing whitespace, hyphens, and other non-numeric characters to prevent unexpected behavior and ensure consistent validation results.

For optimal VoIP performance in Singapore, monitor latency (aim for under 150ms), jitter (under 30ms), and packet loss (under 1%). These benchmarks ensure clear and reliable voice communication and a smooth user experience.

Singapore phone numbers are typically formatted as +65 XXXX XXXX, including the country code and a space separating the first four and last four digits. The provided JavaScript function includes capturing groups in the regular expressions to enable proper formatting.

Virtual numbers in Singapore use the prefix '3', followed by four digits and then three digits, formatted as 3XXXX XXXX. These numbers are often used for digital communication and VoIP services.