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Phone Number
When you need a phone number from a name, email, or other identifier.
Prioritized Sources & Techniques
1st
SpiderFootA5
Automated aggregation across phonebook-type sources
2nd
MaltegoA6
Transform graphs can pivot from email/name to phone via data broker APIs
3rd
PACERP11
Court filings (especially bankruptcy) list contact phone numbers
4th
US County AssessorP6
Property records sometimes include owner contact numbers
5th
FCC ULS / Ham RadioT7
Amateur radio licenses include licensee phone/address
6th
FINRA BrokerCheckT9
Broker registration records include office phone numbers
7th
State Bar AssociationsT10
Attorney lookup directories include office phone
Recommended Workflow
Phone numbers are among the hardest identifiers to find via purely open sources. Court documents (PACER, CourtListener) are underused but frequently contain direct phone numbers in filings. Professional license registries are another reliable source.