What Is My ISP? How to Check Your Internet Provider and ASN
Your ISP (Internet Service Provider) is the network company carrying your traffic to the public internet. If you want to check your ISP from an IP address, the key fields are ISP/organization name and ASN.
How to check your ISP in under a minute
- Open the IP lookup homepage.
- Note your public IP, ISP/organization, and ASN fields in the result.
- Cross-check ASN in ASN Lookup and browse provider profiles in ISP Directory.
ISP vs ASN: what is the difference?
ISP is the provider brand (for example Comcast, AT&T, Vodafone). ASN is the routing identity used in BGP (for example AS7922). Large providers often operate multiple ASNs across consumer, mobile, and enterprise networks.
Why your ISP can look different than expected
- VPN or proxy traffic exits through a different network
- Mobile carriers use shared gateways and CGNAT
- Corporate or campus networks route through centralized providers
- Geolocation and ownership databases update on different schedules
How to verify ISP identity with higher confidence
One source is never enough for network attribution. Combine multiple checks:
- IP Location Lookup for ISP/ASN and location context
- ASN Lookup for routing ownership hints
- WHOIS/RDAP Lookup for registration-level records
- Reverse DNS for hostname/provider patterns
Does your ISP see your browsing activity?
ISPs can still see connection metadata. Encrypted HTTPS protects page content, but your provider can often infer destinations and traffic patterns. If privacy is a concern, review what a VPN does and IP privacy basics.
Related reading
Continue with ASN in networking, CGNAT range checks, and how IP lookup works.