AgentSkillsCN

Phone Number Lookup

查询电话号码的运营商、所在位置及线路类型

SKILL.md
--- frontmatter
name: "Phone Number Lookup"
description: "Carrier, location, and line type lookup for phone numbers"
allowed-tools:
  - src.tools.phone_lookup

Phone Number Lookup

Purpose

Investigate phone numbers to identify carrier information, geographic location, line type, and associated risks for fraud prevention and due diligence purposes.

When to Use

  • •Fraud investigation and prevention
  • •Identity verification and authentication
  • •Due diligence on contact information provided
  • •Investigation of suspicious communications
  • •Risk assessment for phone-based transactions
  • •Verification of business contact details
  • •Analysis of communication patterns in investigations
  • •Compliance screening for high-risk regions

How to Use

The phone lookup tool provides detailed telecommunications intelligence:

  • •Carrier Information: Network provider, carrier type (mobile/landline)
  • •Geographic Data: Country, region, city (where available)
  • •Line Type: Mobile, landline, VoIP, toll-free, premium rate
  • •Portability: Number porting history and original carrier
  • •Risk Assessment: Known fraud indicators, disposable numbers
  • •Validation: Number format validation and active status

Examples

Fraud prevention:

code
Phone: +1-555-0123 provided for account verification
Analysis: VoIP number, no geographic tie to claimed address
Risk: High - potential spoofed or disposable number

Business verification:

code
Company: ABC Corp claims headquarters phone +1-212-555-0100
Verification: Landline, Manhattan location matches claimed address
Assessment: Low risk - legitimate business line

International investigation:

code
Contact: Foreign number +44-20-7946-0958 in transaction
Analysis: UK mobile number, London area, major carrier
Cross-check: Correlate with other provided location information

Communication pattern analysis:

code
Investigation: Multiple calls from +1-800-555-0199
Research: Toll-free number, call center service, bulk registration
Context: Mass marketing or scam operation indicator

Important Notes

  • •Phone number intelligence varies by country and carrier
  • •Mobile numbers may not indicate current physical location
  • •VoIP and internet-based numbers can be easily spoofed or relocated
  • •Consider timezone and dialing patterns for geographic analysis
  • •Some carriers provide limited public information
  • •Number portability can obscure original carrier and location data
  • •Disposable/burner phone services present elevated fraud risk
  • •Cross-reference phone data with other contact information
  • •Be aware of privacy regulations regarding telecommunications data