# A2P SMS, OTP, and sender ID rules in Singapore

> BroadNet delivers A2P SMS and OTP in Singapore over direct connections to Singtel, StarHub, and M1; sender IDs are registered with IMDA (lead time: About 19 calendar days (SGNIC)).

- Canonical URL: https://www.broadnet.me/coverage/singapore
- Language: en
- Last updated: 2026-10-21
- Publisher: BroadNet (https://www.broadnet.me)

Direct termination into Singtel, StarHub, and M1, with SSIR sender-ID registration coordinated during onboarding.

## Key facts

- Regulator: IMDA (Infocomm Media Development Authority)
- Dialling code: +65
- MCC: 525
- Mobile subscribers: 9.5M
- Sender-ID lead time: About 19 calendar days (SGNIC)
- Time to launch: Live in 15–19 business days from test-access request to production (set by the sender-ID lead time)
- Typical OTP latency: 2.6 s
- Typical delivery rate, operator-direct: 99.7%
- SMS price band: USD 0.035 – 0.06 (indicative list rates, reviewed 2026-09-24)
- Billing currencies: USD, SGD

## Operators

| Operator | MNC | Route | Grade | A2P rate |
|---|---|---|---|---|
| Singtel | 525-01 | Direct | A+ | USD 0.0484 |
| StarHub | 525-05 | Direct | A+ | USD 0.0462 |
| M1 | 525-03 | Direct | A+ | USD 0.044 |

## Technical facts for Singapore

Network codes, message lengths and sender-ID rules in one table. Segment lengths are the GSM standard values (3GPP TS 23.038).

| Technical facts | |
|---|---|
| Mobile country code (MCC) | 525 |
| Dialling code | +65 |
| Operators (MCC-MNC) | Singtel · 525-01; StarHub · 525-05; M1 · 525-03 |
| SMS length, GSM-7 (Latin alphabet) | 160 characters in a single SMS; 153 per part when concatenated |
| SMS length, UCS-2 (Arabic, Cyrillic and other scripts) | 70 characters in a single SMS; 67 per part when concatenated |
| Regulator | IMDA (Infocomm Media Development Authority) |
| Sender-ID rules | SMS Sender ID Registry (SSIR), run by SGNIC for IMDA, mandatory since 31 January 2023: the organisation registers its alphanumeric sender IDs itself and selects the Participating Aggregators allowed to carry them. English primary; Chinese / Malay / Tamil supported. |
| Sender-ID lead time | About 19 calendar days (SGNIC) |

## Pricing

| Band | Transactional | Promotional | Note |
|---|---|---|---|
| Pay-as-you-go | USD 0.0440 | USD 0.054 | List rate up to 100K messages/month |
| Growth · 100K+ | USD 0.0387 | USD 0.0475 | Auto-tier discount |
| Volume · 1M+ | USD 0.0326 | USD 0.0400 | Includes quarterly route review |
| Enterprise | Custom | Custom | Direct operator pricing + signed SLA |

## Sender ID

SMS Sender ID Registry (SSIR), run by SGNIC for IMDA, mandatory since 31 January 2023: the organisation registers its alphanumeric sender IDs itself and selects the Participating Aggregators allowed to carry them. English primary; Chinese / Malay / Tamil supported.

SSIR registration with SGNIC: about 19 calendar days end to end; the organisation registers and selects its Participating Aggregators.

## Rules

- **SSIR registration**: Mandatory for every alphanumeric sender ID. The organisation registers with SGNIC itself and selects the Participating Aggregators that carry its traffic; BroadNet coordinates this during onboarding.
- **PDPA**: Singapore Personal Data Protection Act enforced. DNC honoured.
- **'Likely Scam' tag**: Unregistered alphanumeric IDs relabeled at delivery — SSIR registration is non-optional.
- **Promotional windows**: DNC + opt-in honoured 24/7.

## Compliance

PDPA (Singapore) fully enforced. DNC (Do Not Call) registry honoured. SSIR registration mandatory — unregistered alphanumerics relabeled to 'Likely Scam'.

## Sample A2P template

```text
Your verification code is 528914. Valid 5 minutes.
```

## Related

- https://www.broadnet.me/regulations/singapore
- https://www.broadnet.me/pricing/sms/singapore