Artifact GuideSingaporeDNC Marketing Checks

Singapore PDPA DNC Marketing Checks

Before sending specified marketing messages to Singapore telephone numbers, teams need a campaign record that shows the DNC account used, the numbers checked, the channel-specific register status, and whether consent evidence was used instead of a DNC clearance.

This page turns PDPC and DNC Registry guidance into operating language for marketing, sales operations, privacy, and vendor teams. This guidance is practical, source-linked, and should be validated against current legal and policy requirements before implementation.

Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
Sections
4

Structured answer sets in this page tree.

Primary sources
4

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated May 9, 2026
Overview

Use this page as a launch checklist for Singapore PDPA DNC marketing checks. It focuses on the records a campaign owner should keep before voice, text, or fax telemarketing goes live: DNC Registry account evidence, relevant register status, result validity, consent evidence, sender responsibility, and when a new check is supported by the source material.

Section 1

When a campaign needs a DNC marketing check

Start with the message, not the audience list label. Under PDPC guidance, a commercial marketing message to a Singapore telephone number is generally a specified message when one purpose is to advertise, promote, or offer goods, services, land, an interest in land, a business opportunity, or an investment opportunity.

For each campaign, record whether the message will be sent by voice call, text channel, fax, or a data application that uses a Singapore telephone number. If the team is relying on clear and unambiguous consent instead of checking the DNC Registry, keep the consent evidence in the same launch record and make the approval say exactly which sender, number, channel, and message category the consent covers.

  • Classify the message as specified, excluded from specified-message treatment, or blocked for legal review because the purpose is unclear.
  • Identify every sender: the brand, business unit, agency, call centre, or platform that sends, causes, or authorises the message.
  • Separate voice, text, and fax channels because the DNC Regulations define separate No Voice Call, No Text Message, and No Fax Message Registers.
  • Do not treat a request for telemarketing consent sent to a Singapore telephone number as outside DNC controls; PDPC guidance treats offers to send specified messages as specified messages.
Section 2

Account and sub-account evidence to keep

The DNC Registry business rules distinguish the main account from sub-accounts. A useful campaign file should show which main account was used, which sub-account or user submitted the check, and whether the checker was acting for its own organisation or on behalf of another organisation.

For agency, reseller, group-company, or outsourced call-centre launches, keep the on-behalf evidence with the DNC check output. The campaign owner should be able to show who authorised the marketing, who submitted the DNC check, and which organisation names were declared for on-behalf checking at the time of submission.

  • Record the main account holder, sub-account user, submission timestamp, campaign owner, and approving privacy or legal reviewer.
  • For Singapore-registered organisations, keep the UEN or account registration evidence used for DNC account administration; for overseas organisations, keep the company registration evidence used for the account.
  • For on-behalf checks, retain the downloaded On Behalf List or equivalent export with the campaign record.
  • Do not approve a vendor-sent campaign unless the record names both the business authorising the message and the vendor or call centre that will send it.
Section 3

How to use DNC check results

The campaign approval should store the submitted list, rejected-number report, filtered-number output, summary, and any on-behalf export. The business rules say submitted telephone numbers are checked against all three DNC Registers, but the launch decision should still compare the campaign channel with the relevant register status: voice campaign to No Voice Call, SMS or MMS campaign to No Text Message, and fax campaign to No Fax Message.

Treat the 21-day validity window as a ceiling, not a general review cadence. A result supports telemarketing activity only while the returned result remains valid and while the campaign facts still match the checked list, sender, channel, and message. If the validity period has lapsed and the organisation intends to continue telemarketing, perform another DNC check.

  • Accept only Singapore telephone numbers in the DNC submission format supported by the Registry and keep rejected-number reasons out of the approved send list.
  • For Small Number Lookup, retain the immediate result; for Bulk Filtering, retain the downloaded filtered numbers, summary, on-behalf list, and rejected numbers files.
  • Block channel sends where the relevant register status says the number is listed and no clear, unambiguous, channel-specific consent evidence is being relied on.
  • Re-check only where supported by the operational facts: the 21-day result period has lapsed, the number list changed, rejected numbers were corrected and resubmitted, or the team no longer has the consent evidence it planned to rely on.
Primary sources

References and citations

pdpc.gov.sg
Referenced sections
  • Supports requiring third-party source evidence when the sender obtains Singapore telephone numbers from a referrer or list source.
"could obtain from B evidence of clear and unambiguous consent"
dnc.gov.sg
Referenced sections
  • Supports the 21-day result-validity window and re-checking after the window lapses if telemarketing continues.
"Results returned from the DNC Registry are valid for up to 21 days."
pdpc.gov.sg
Referenced sections
  • Supports retaining DNC output files because bulk filtering provides filtered-number, summary, on-behalf, and rejected-number files.
"The following files will be available for download"
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