IP Lookup & GeoIP Guide: How to Find Location, ISP, and ASN of Any IP
Discover how GeoIP mapping works, how to trace any IP address to its hosting country and city, and how Autonomous System Numbers (ASN) govern global routing.
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What is an IP Lookup?
An IP Lookup is a diagnostic search that inspects an IPv4 or IPv6 address to determine its physical country, region, city, operating Internet Service Provider (ISP), and Autonomous System Number (ASN).
How Do GeoIP Databases Work?
GeoIP databases correlate IP address ranges with physical locations by aggregating data from several authoritative sources:
- Regional Internet Registries (RIRs): Public allocation records from RIPE NCC, ARIN, APNIC, LACNIC, and AFRINIC.
- BGP Routing Tables: Global border gateway protocol route announcements.
- ISP Infrastructure Data: Aggregated node topologies and telecom hub mapping.
Accuracy Expectations: Country-level accuracy exceeds 99%, while city-level accuracy ranges between 75% and 90% depending on ISP infrastructure.
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β Frequently Asked Questions (FAQ)
Can an IP lookup reveal a user's personal identity? βΎ
No. Without a court order or ISP subscriber records, an IP lookup only reveals geographic regions and ISP company information.
What does GeoIP show when connected to a VPN? βΎ
It displays the location and network operator of the VPN server endpoint, masking your true physical location.