TCPA Company & Phone Number Research Toolkit
A practical, step-by-step workflow to identify the correct defendant entity, trace VOIP infrastructure, uncover prior litigation, and assess financial leverage in TCPA cases.
1. Secretary of State & Entity Verification
Confirm the exact legal entity, formation state, registered agent, and corporate status.
2. Related Entities & “Shell Game” Mapping
Identify shared principals, addresses, parent companies, and successor entities.
- Search shared registered agents
- Search variations of company names
- Map principal names across entities
3. Phone Number → Carrier / VOIP Lookup
Determine if calls/texts were sent using VOIP or mass-dialer platforms.
4. Phone Number Reverse Searches
Find out who is calling you:
- Spydialer
- Truecaller
- TruthFinder
- Phomber
- NumLookup
- SkipLook
- SocialCatFish
- Try the “WhatsApp Sync” Trick
5. Email/Text Research Methods
Find out who is texting you:
- Grabify – Create a link, shorten it, send it to the texting party by text or email, and when they click on it, view analytics.
- Locate email addresses for a company using Google:
Google: site:[SITE] “email”
Example: site:www.ginsburglawgroup.com “email”
6. Prior TCPA Lawsuits
Search for previous federal or state TCPA cases and defenses used.
Search terms to use:
- “47 U.S.C. 227”
- “autodialer”
- “prior express consent”
- “National Do Not Call Registry”
7. Website Footprint & Tech Stack
Identify dialer vendors, CRMs, lead sharing relationships, and marketing partners.
8. Financial Size & Leverage Indicators
Estimate operational scale and financial exposure potential.
- Crunchbase
- PrivCo
- SEC EDGAR
- LinkedIn employee count
9. Regulatory & Enforcement History
Check for prior enforcement actions that support willfulness allegations.
TCPA Defendant Research Checklist
- ☐ Legal entity verified
- ☐ Registered agent confirmed
- ☐ Related entities mapped
- ☐ All phone numbers traced to carrier/VOIP
- ☐ Prior TCPA lawsuits reviewed
- ☐ Privacy Policy & ToS preserved (PDF + screenshots)
- ☐ Arbitration/class waiver language captured
- ☐ Size/headcount estimated
- ☐ Subpoena targets identified (VOIP, dialer, CRM)


