What Role Does Data Accuracy Play in DNC Compliance?

Type: Blog
Topic: Do Not Call Solution

Accurate data is the foundation of effective Do Not Contact (DNC) compliance. Under the Telephone Consumer Protection Act (TCPA) and the FTC’s Telemarketing Sales Rule (TSR), even a single call to a consumer who previously opted out can trigger fines, lawsuits, or enforcement action. Most of these violations don’t result from deliberate misconduct, but are instead the result of outdated or inconsistent data.

Key strategies for maintaining data accuracy in DNC compliance:

• Validate contact data regularly to catch outdated or incorrect entries
• Scrub phone numbers against national, state, and internal DNC lists
• Synchronize consent and suppression status across all systems and vendors
• Audit data integrity and access logs to catch internal process gaps
• Apply real-time updates when consent is revoked or contact preferences change

In the following sections, you’ll find information on:

Common Data Errors That Create Risk

Data inaccuracies are one of the most common sources of DNC violations. When businesses rely on incomplete, outdated, or siloed records, they risk contacting consumers who have opted out.

Some of the most frequent issues include:

• Reassigned or outdated numbers: Calling a number that has changed hands can trigger a violation if the new owner has not given consent
• Incomplete consent records: Missing timestamps, source details, or opt-in method can make consent impossible to prove
• Disconnected suppression data: If internal DNC lists aren’t synced across departments or vendors, suppression may be missed
• Invalid phone number formats: Poor formatting or unverified inputs can bypass scrub processes and lead to errors
• Time zone errors: Calling outside of permissible hours due to inaccurate time zone mapping may violate TSR restrictions

Impact of Inaccurate Data on TCPA and TSR Compliance

Both the TCPA and the TSR impose strict penalties for unauthorized contact. The TCPA allows consumers to recover $500 to $1,500 per call or text that violates consent requirements. The TSR, which governs the National Do Not Call Registry, authorizes the FTC to impose civil penalties of up to $53,088 per call for violations involving numbers on the national list.

Inaccurate data increases the risk of:

• Contacting individuals who opted out at the federal or state level
• Overlooking internal DNC requests due to unsynced suppression systems
• Failing to detect revoked consent in time
• Sending communications to invalid or stale numbers that were never verified
• Lacking defensible proof of opt-in, especially if challenged in court

Best Practices for Data Validation and Ongoing Accuracy

The most reliable way to reduce compliance risk is to build accuracy into your operations. This involves not just cleaning your data periodically, but establishing ongoing validation and governance practices.

Recommended best practices include:

• Real-time DNC scrubbing: Compare phone numbers against national, state, and internal lists before each campaign
• Consent and suppression synchronization: Keep all systems—CRM, call center, marketing automation—linked to a shared source of truth
• Audit-ready logging: Track changes to consent status, suppression entries, and list scrubbing activity in a detailed log
• Regular data audits: Identify and fix broken formats, duplicate entries, and logic mismatches across systems
• Tightly controlled data access: Restrict who can edit consent and suppression records to minimize accidental errors

Building these practices into your compliance operations helps prevent small gaps from turning into large violations.

How PossibleNOW Supports Accurate, Defensible DNC Compliance

PossibleNOW provides enterprise-grade tools that help businesses capture, maintain, and act on accurate customer data—across every system and team.

• MyPreferences is a centralized consent and preference management platform that allows organizations to track opt-ins, opt-outs, and consent revocations in real time. Every interaction is timestamped, audit-ready, and mapped to the individual’s contact identifiers. This reduces the likelihood of missing or misattributing consent.
• DNCSolution® helps manage national, state, and internal suppression lists in a unified system. This Do Not Call solution supports advanced list scrubbing, vendor oversight, and risk-based filters that flag high-risk numbers before outreach begins.

For organizations operating at scale, PossibleNOW also offers TCPA compliance services to strengthen your position in the event of a complaint or investigation. From consent architecture to real-time suppression workflows, these services help align operations with legal expectations.

When contact records, consent artifacts, and suppression data live in disconnected silos, your organization becomes vulnerable. With PossibleNOW, you can centralize your compliance operations and maintain the accuracy that regulators demand. Contact us to learn how we can help.

About PossibleNOW

PossibleNOW is the pioneer and leader in customer consent, preference, and regulatory compliance solutions. We leverage our MyPreferences technology, processes, and services to enable relevant, trusted, and compliant customer interactions. Our platform empowers the collection, centralization, and distribution of customer communication consent and preferences across the
enterprise. DNCSolution addresses Do Not Contact regulations such as TCPA, CAN-SPAM and CASL, allowing companies to adhere to DNC requirements, backed by our 100% compliance guarantee.

PossibleNOW’s strategic consultants take a holistic approach, leveraging years of experience when creating strategic roadmaps, planning technology deployments, and designing customer interfaces. PossibleNOW is purpose-built to help large, complex organizations improve customer experiences and loyalty while mitigating compliance risk.