1. PHONE VALIDATION & LOOKUP

USES: Validate phone numbers, check carrier, location, and line type for investigative purposes.

1. NumVerify
2. PhoneValidator
3. Truecaller
4. Sync.me

2. MULTI-PLATFORM PHONE INTEL

USES: Cross-reference phone numbers across multiple platforms for comprehensive intelligence.

1. Social Searcher
2. ThatsThem