The Singapore DNC Registry: Rules Every Sales Team Must Know (2026)

The three registers: voice, text, and fax

The DNC Registry, run by the PDPC at dnc.gov.sg, is actually three separate registers: the No Voice Call Register, the No Text Message Register, and the No Fax Message Register. Individuals with Singapore telephone numbers can list themselves on any combination of the three, free of charge, and a registration stays effective until the number is terminated or the listing withdrawn.

The registers operate independently, which matters for multi-channel sequences. A prospect may have blocked marketing SMS but not voice calls, or the reverse. A compliant workflow checks the specific register for the channel you intend to use, not just whether the number appears anywhere.

The obligation applies to specified messages, which the PDPA defines broadly as messages offering, advertising, or promoting goods, services, land, or business opportunities. Market-survey calls and genuine service messages such as delivery notifications are generally outside the definition, but anything with a sales purpose is in scope.

Does the DNC apply to B2B calls? The business exemption, carefully

Paragraph 1(g) of the Eighth Schedule to the PDPA excludes from the definition of a specified message any message sent to an organisation, other than an individual acting in a personal or domestic capacity, for any purpose of the receiving organisation. In plain terms, a true B2B marketing call is not a specified message, so the DNC checking duty does not apply to it.

Read the conditions carefully, because both must hold. First, the message must be sent to an organisation: calling a company's published office line, or an employee's business number, to discuss something for the company fits; calling a person's private mobile about a personal product does not. Second, the purpose must be for the receiving organisation: selling CRM software to the operations director is for her company, while selling her a personal insurance policy on the same number is not.

Mixed-use numbers are the trap. Many directors, agents, and small business owners use one mobile for everything. The PDPC's guidance accepts that a number used for both personal and business purposes can still receive B2B messages in its business capacity, but if there is doubt about whether the number or the pitch is genuinely business, the safe play is to check the register anyway. Checks are cheap; penalties are not.

How to check numbers, and what it costs

Checking is done through the DNC Registry portal at dnc.gov.sg, after a one-time organisation account setup. You submit Singapore telephone numbers and receive results indicating which registers each number appears on. There is also an API for telemarketers who need to check at volume.

The pricing model is credit based: one credit is deducted per number checked, each organisation receives 1,000 free credits a year, and additional credits are sold in prepaid bundles that get cheaper per number at volume. For a typical SDR team calling a few hundred Singapore prospects a month, the free allocation often covers it.

Timing matters as much as the check itself: results are valid for 30 days. If you call a number more than 30 days after your last check, you must check it again. Keep records of every check and its date, because evidence of a valid check is your defence if a complaint is filed.

Clear and unambiguous consent is the alternative to checking. If a prospect has explicitly agreed to receive marketing calls or messages on their number, for example through an unbundled tick box on a form, you may contact them without querying the register. The consent must be specific to the channel, freely given, and properly evidenced; pre-ticked boxes or permissions buried in dense terms do not meet the standard, and the burden of proving consent sits with the sender.

• Register an organisation account at dnc.gov.sg before your first campaign.
• Check the specific register for your channel: voice, text, or fax.
• Results expire after 30 days; re-check before re-contacting.
• Log every check with a timestamp and keep the records.

The ongoing-relationship exemption

The Personal Data Protection (Exemption from Section 43) Order exempts organisations from checking the No Text Message and No Fax Message registers when sending to existing customers with whom they have an ongoing relationship, where the message relates to the subject of that relationship. An active subscription, membership, account, or a continuing pattern of purchases all qualify; a single past transaction does not.

Two limits catch teams out. The exemption covers text and fax only: voice calls to DNC-registered numbers always require a check or clear consent, even to long-standing customers. And the message must relate to the subject of the relationship, so a gym texting a member about class schedules is fine, while the same gym texting that member about an unrelated side business is not.

Every message sent under the exemption must still include a working opt-out facility, and once a customer opts out or the relationship ends, the exemption ends with it. For most B2B sales teams, whose targets are prospects rather than existing customers, this exemption rarely applies; treat it as a customer-marketing tool, not a prospecting one.

Penalties, and what enforcement actually looks like

Before February 2021, DNC breaches were criminal offences carrying fines of up to S$10,000 per message. The first prosecution made the point memorably: in 2017, Star Zest Home Tuition and its director were each fined S$39,000 after pleading guilty to charges of sending marketing SMS without checking the registry, following hundreds of consumer complaints.

The Personal Data Protection (Amendment) Act 2020 moved DNC breaches into a civil financial penalty regime from 1 February 2021. The PDPC can now directly impose penalties of up to S$200,000 on individuals and up to S$1 million on organisations, and higher turnover-based caps apply to the use of dictionary attacks or address-harvesting software.

Enforcement is complaint driven and ongoing. In February 2024 the PDPC published a decision against a financial advisor who generated numbers by dictionary attack and called DNC-registered individuals without checking the register or obtaining clear consent. Decisions name the parties, so a DNC breach is both a financial and a reputational event, particularly in regulated industries like financial advisory and property.

Building DNC checks into your calling workflow

Compliance fails at the workflow level, not the policy level. A team that relies on reps remembering to check numbers will eventually miss one, so the check needs to live inside the tools reps already use, between list building and dialling.

A clean workflow looks like this: imported or claimed prospects land in a queue; Singapore numbers are batch-checked against the relevant register before they become callable; results are stamped with a date; and any number whose check is older than 30 days drops out of the queue until re-checked. Numbers on the register are suppressed from calling but can remain reachable by email, which the DNC regime does not cover.

Document the policy in one page: which channels you use, when the B2B exemption is relied on and who decides, how checks are logged, and how opt-outs from calls are recorded. If a complaint ever reaches the PDPC, the difference between a warning and a penalty often comes down to whether you can show a working system.