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What Is My ISP - Internet Service Provider Lookup Tool
Discover your Internet Service Provider (ISP) details instantly with our free ISP lookup tool. Find out who provides your internet connection, view your ASN (Autonomous System Number), network details, organization information, and geographic location. Perfect for network troubleshooting, security analysis, privacy verification, and understanding your internet connection infrastructure.
What Information Can You Find?
- ISP Name: Your Internet Service Provider's official company name and brand
- Organization: The organization or entity managing your network connection
- ASN (Autonomous System Number): Unique identifier for your network on the internet
- IP Address: Your current public IP address visible to websites
- Location: City, region, and country associated with your connection
- Network Details: IP range, subnet information, and network infrastructure data
Why Check Your ISP?
- Verify you're connected through the correct internet provider
- Troubleshoot network connectivity and performance issues
- Check if you're using a VPN or proxy service correctly
- Identify your network for security and privacy purposes
- Verify ISP claims about service coverage and infrastructure
- Research network routing and peering relationships
- Confirm business internet connections and dedicated lines
- Detect unauthorized network access or connection hijacking
Understanding ASN (Autonomous System Number)
An ASN is a unique number assigned to networks that participate in internet routing using BGP (Border Gateway Protocol). Your ISP's ASN identifies their network infrastructure globally and is used for routing internet traffic. Large ISPs may have multiple ASNs for different regions, services, or acquired networks. Understanding your ASN helps with advanced network troubleshooting, BGP routing analysis, and identifying network ownership and peering relationships.
Common Use Cases
🔧 Network Troubleshooting
Identify ISP-related issues, verify routing paths, and diagnose connection problems
🔒 VPN Verification
Confirm your VPN is working by checking if ISP changes when connected
🛡️ Security Analysis
Verify connection authenticity and detect unauthorized network access
💼 Business Verification
Confirm dedicated business lines and enterprise internet connections
ISP Types and Services
Internet Service Providers offer various connection types:
- Cable ISPs: High-speed internet via coaxial cable infrastructure
- DSL Providers: Internet through telephone lines (ADSL, VDSL)
- Fiber Optic ISPs: Ultra-fast connections using fiber optic cables
- Wireless/Mobile ISPs: 4G/5G cellular internet connections
- Satellite ISPs: Internet via satellite for remote areas
- Business ISPs: Dedicated enterprise-grade connections with SLAs
Privacy Note
Your ISP can see all unencrypted internet traffic and the websites you visit (but not HTTPS content). They may log connection data, browsing history, and DNS queries. Use a VPN to encrypt your traffic and prevent ISP monitoring. Our tool only displays publicly available information that websites can already see.
Frequently Asked Questions
Is my ISP information private?
Your ISP information is publicly visible to websites you visit. This tool simply displays what's already publicly available about your connection.
Can I hide my ISP?
Yes, using a VPN or proxy service will show the VPN provider's ISP instead of your actual ISP, protecting your privacy and location.
Why does my ISP show a different company?
Many ISPs use infrastructure from larger network providers or parent companies. The displayed ISP might be the wholesale provider or network operator rather than your retail ISP brand.
What can my ISP see?
Your ISP can see all websites you visit (URLs), connection times, data usage, and unencrypted traffic. They cannot see HTTPS content, but can see the domains you access.