B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
31 days
31 days -- dnc list scrub interval days for US telemarketing businesses (2025)
Businesses must scrub their telemarketing call lists against the National Do Not Call Registry at least every 31 days.
- Applies to consumer phone numbers on the National Do Not Call Registry unless there is an existing business relationship or written consent
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
31 days
Unit
Duration Days
Data Vintage
2025
Entity
Geography
US
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
FTC
Primary
Tier B
https://www.signalmash.com/post/understanding-the-federal-do-not-call-registry-and-dnc-compliance-fo… ↗
Source Article
DNC Registry & TCPA Compliance for Businesses | Signalmash
Date:
November 12, 2025
Category:
Understanding the Federal Do Not Call Registry and DNC Compliance for Businesses
Quick answer: what the Federal Do Not Call Registry means for businesses
The National Do Not Call Registry, run by the FTC, lists consumer phone numbers that telemarketers may not call …
Original Research
FTC
· Original study ↗
Methodology
Regulatory compliance requirement cited in vendor article
Methodology documented
Segmentation
IndustryTelemarketing
RegionUS
Channelphone
Cite this stat
Plain Text
US telemarketing businesses: 31 days dnc list scrub interval days. Source: FTC (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dnc-list-scrub-interval-31-days
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<blockquote cite="https://lighthousedata.io/data/dnc-list-scrub-interval-31-days" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>31 days</strong> -- dnc list scrub interval days for US telemarketing businesses<br><small>Source: FTC (2025) · <a href="https://lighthousedata.io/data/dnc-list-scrub-interval-31-days" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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