Claude-skill-registry IP Geolocation
Geolocate IP addresses and analyze network information
install
source · Clone the upstream repo
git clone https://github.com/majiayu000/claude-skill-registry
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/ip-geolocation" ~/.claude/skills/majiayu000-claude-skill-registry-ip-geolocation && rm -rf "$T"
manifest:
skills/data/ip-geolocation/SKILL.mdsource content
IP Geolocation
Purpose
Determine geographic location, ISP information, and network details for IP addresses to support fraud investigation, security analysis, and compliance screening.
When to Use
- Fraud detection and prevention analysis
- Investigation of suspicious login activities
- Geolocation verification for compliance purposes
- Cybersecurity incident response and threat analysis
- Network traffic analysis and attribution
- Verification of claimed business locations
- Investigation of VPN and proxy usage
- Risk assessment for online transactions
How to Use
The IP geolocation tool provides comprehensive network intelligence:
- Geographic Location: Country, region, city, latitude/longitude coordinates
- ISP Information: Internet service provider, organization, network name
- Network Details: ASN (Autonomous System Number), IP range, routing info
- Connection Type: Residential, business, mobile, hosting, VPN/proxy
- Risk Assessment: Known malicious IPs, proxy detection, anonymization services
- Timezone: Local timezone for the IP location
Examples
Fraud investigation:
Login IP: 203.0.113.45 from claimed US user Analysis: IP resolves to Eastern Europe, known VPN service Red flags: Geographic mismatch, anonymization service usage Assessment: High fraud risk - investigate account compromise
Transaction verification:
Purchase IP: 198.51.100.10 for international wire transfer Location: New York City, business ISP, matches claimed location Network: Legitimate financial district business connection Assessment: Low risk - geographic consistency with transaction
Cybersecurity incident:
Attack IP: 192.0.2.150 in security breach Investigation: Hosting provider in country with weak cybercrime laws Network: Known bulletproof hosting service, high-risk ASN Intelligence: Add to threat indicators for blocking
Compliance screening:
User IP: 172.16.254.1 accessing regulated service Location: Sanctioned country, government ISP Compliance: Block access due to sanctions restrictions Documentation: Record for regulatory compliance audit
Important Notes
- IP geolocation accuracy varies (city-level ~70-80% accurate)
- VPN and proxy services can mask true user location
- Mobile IPs may show carrier headquarters rather than user location
- Consider timezone correlation with claimed user location
- Some ISPs use dynamic IP allocation affecting accuracy
- Corporate networks may route through different geographic locations
- IPv6 adoption may affect traditional geolocation methods
- Cross-reference IP data with other geographic indicators
- Be aware of privacy implications when collecting IP intelligence