+65SG
Singapore number screening
Singapore numbers are a flat eight digits with no area code — a small, clean pool where precision beats volume.
Mobile number format
Singapore numbers are a flat eight digits — no trunk prefix, no area code, straight after +65. A leading 8 or 9 means mobile, 6 means fixed line and 3 means VoIP. Those two rules alone strip most malformed entries out of a list.
Main carriers
- Singtel
- StarHub
- M1
- Simba
Beyond the three incumbents — Singtel, StarHub and M1 — Simba entered as a fourth network, and a long tail of MVNOs and eSIM brands ride on the same underlying infrastructure. There is effectively no prefix-to-carrier mapping here, so inferring the operator from the number simply does not work.
On the ground
SMS here sits under a Sender ID registry: unregistered alphanumeric senders get flagged as likely scam on the recipient's screen, which weakens SMS regardless of list quality. The population is small and the expatriate share turns over quickly, so numbers going dead once someone leaves the country is a larger source of decay than in neighbouring markets.
Screening guidance
The pool is small, so optimise for precision rather than volume. Clean formats with the two structural rules — eight digits, leading 8 or 9 — then run WhatsApp and Telegram registration in parallel, because the overlap is lower than expected and each adds reach. Treat SMS as secondary and put the budget on messaging apps.
Key platforms in Singapore
Singapore is one of the few markets where WhatsApp and Telegram genuinely coexist: one-to-one conversation runs on WhatsApp, while Telegram channels are the standard broadcast format for agencies, communities and merchants, at a penetration far above the regional average. Shopee is headquartered here, so commerce and social audiences overlap heavily.
FAQ
How many digits is a Singapore phone number?
Eight digits, with no leading 0 and no area code — the international form is simply +65 plus those eight. A leading 8 or 9 is mobile, 6 is a fixed line and 3 is VoIP. Anything in a Singapore file that is not eight digits, or does not start with 8 or 9, can be discarded without testing.
Can you identify a Singapore carrier from the number?
No. Singapore prefixes are not carved up by operator — Singtel, StarHub, M1, Simba and a crowd of MVNOs share the same pool, and portability blurs it further. The prefix carries no operator information at all, so the only way to know is a live per-number lookup.
Does SMS work well for Singapore numbers?
Usually worse than messaging apps. Singapore operates a Sender ID registry, and unregistered alphanumeric senders are labelled as likely scam on the recipient's handset, which flattens open rates. The steadier approach is to screen for WhatsApp and Telegram registration first and run outreach through those channels.
Start screening Singapore numbers
Submit numbers for this market after signup, or integrate in bulk through the API.
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