Country code +65

Sending SMS to Singapore

Singapore responded to SMS impersonation fraud faster than most regulators: alphanumeric sender IDs must be registered with the SMS Sender ID Registry, and unregistered IDs are labelled "Likely-SCAM" on the recipient handset. That makes registration a brand-trust question, not just a deliverability one.

Before you send

What Singapore requires

These are the constraints that decide whether a message is delivered, filtered or blocked — not general best practice.

Requirement 1 of 4: SSIR registration is required for alphanumeric sender IDs.

Requirement 1 of 4

SSIR registration is required for alphanumeric sender IDs.

Checked automatically on every message we send to Singapore — nothing for you to track by hand.

Networks

Mobile operators in Singapore

We deliver to every network below. Route quality is measured per operator, not averaged across the country.

4Networks

SingtelLive route

StarHubLive route

M1Live route

SIMBALive route

Traffic

What businesses send in Singapore

Banking and government (Singpass) alerts

Sent the instant the triggering event happens — trusted for anything time-sensitive tied to money.

Delivery notifications

Keeps the recipient's attention without needing an app open, for the moment they actually care about the update.

Appointment reminders

Cuts no-shows more effectively than email — most people notice a text within minutes of it arriving.

Dialling

How to dial Singapore

Every part of the number, laid out separately, then the same thing written the way an API expects it.

+Exit

65Country code

8XXX XXXX or 9XXX XXXXNational number

+65 — +65 8XXX XXXX or 9XXX XXXX — eight digits, no trunk prefix.

From abroad, replace your exit code with +, then 65, then the national number — dropping the national trunk prefix if the country uses one (a leading 0 in most, though not in the +1 numbering plan). Store numbers in E.164 (+65…) and they work from any country and any API.

At a glance

Singapore by the numbers

The figures below come from public country data and set the context for how much SMS traffic Singapore actually carries.

+65

Singapore country code

ISOSG / SGP

4,701,069

People

693

Area km²

295.7 Billion

GDP (USD)

Sender ID

How your name appears in Singapore

What shows up in the recipient’s inbox, and what has to be true before it can.

9:41

SMSLOCAL

Text Message

Your verification code is 4172. Valid for 10 minutes.

now

Delivered on +65

Sender ID rules for +65

Alphanumeric sender IDs must be registered with the SSIR. Unregistered senders are delivered with a "Likely-SCAM" prefix.

Number format+65 8XXX XXXX or 9XXX XXXX — eight digits, no trunk prefix.

Delivers across every major network in Singapore: Singtel, StarHub, M1, SIMBA.

What people send most: Banking and government (Singpass) alerts · Delivery notifications · Appointment reminders.

Message length: under the standard SMS encoding, a segment typically holds 160 GSM-7 characters, or 70 once a message uses Unicode — Arabic, Chinese, Cyrillic, emoji. Longer messages split into several segments automatically and are billed per segment; exact limits are confirmed for Singapore as part of onboarding.

Reference