IP Address Lookup

About IP Address Lookup

IP Address Lookup reveals the geolocation and network details behind any IPv4 or IPv6 address. Enter any public IP and instantly see the country, region, city, postal code, ISP, organization, ASN, timezone, UTC offset, and GPS coordinates. Click "My IP" to auto-detect and look up your own public IP. The data comes from ipapi.co, which is updated continuously from regional internet registry (RIR) records. IP geolocation is used by network administrators to trace suspicious traffic, by developers for fraud detection and rate limiting, and by security researchers to attribute malicious activity. For network architecture context, Subnet Calculator breaks down CIDR notation and usable host ranges, while DNS Lookup resolves a domain name to its IP addresses.

IP geolocation is an estimate, not an exact science. Country-level accuracy is typically 95 to 99% for well-maintained databases, but city-level accuracy drops to 50 to 80% depending on the IP and region. Several factors reduce accuracy: ISPs that assign dynamic IPs, mobile carriers that route through centralized gateways (making the location appear as the ISP headquarters city rather than the actual user location), VPNs and proxies that present the server location instead of the client location, and CGNAT (Carrier-Grade Network Address Translation) which allows multiple users to share a single public IP. IPv4 address exhaustion has been a major driver of CGNAT adoption: the global pool of 4.3 billion IPv4 addresses was exhausted at the IANA level in 2011. IPv6 was designed to solve this with a vastly larger address space (340 undecillion addresses), but deployment remains partial globally as of 2026, with most networks running dual-stack IPv4 and IPv6. Geolocation databases for IPv6 are generally less complete than for IPv4, reflecting newer deployment. The ASN field identifies the autonomous system that owns the IP block, which is typically an ISP, a hosting provider like AWS or Cloudflare, or a large organization with its own network infrastructure.

How to use IP Address Lookup

  1. Enter any IPv4 or IPv6 address, or click "My IP" to auto-detect your own.
  2. Click Lookup to fetch geolocation and network information.
  3. View country, city, ISP, timezone, and coordinates in the result cards.

Frequently Asked Questions

What is an IP address?
An IP (Internet Protocol) address is a unique numerical label assigned to every device connected to a network. IPv4 addresses look like 203.0.113.1 (four octets, 0 to 255 each). IPv6 addresses are longer hexadecimal strings like 2001:db8::1. Your public IP is assigned by your ISP and identifies your connection on the internet.
How accurate is IP geolocation?
Country-level accuracy is typically 95 to 99% for most IP databases. City-level accuracy is lower, around 50 to 80%, and varies by region and ISP. VPNs, proxies, mobile carrier NAT, and CGNAT can all cause the shown location to differ from the actual physical location.
What is the difference between IPv4 and IPv6?
IPv4 uses 32-bit addresses, about 4.3 billion possible values, written as four decimal octets (e.g. 203.0.113.1). IPv6 uses 128-bit addresses with vastly more possible values, written in hexadecimal (e.g. 2001:db8::1). IPv4 addresses were effectively exhausted at the IANA level in 2011, driving IPv6 adoption.
Can I look up private IP addresses like 192.168.x.x?
No. Private IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) are used only inside local networks and are not routable on the public internet, so they have no geolocation data. Only public IP addresses can be geolocated.
What is an ASN?
An ASN (Autonomous System Number) is a unique identifier assigned to a network under a single administrative domain, typically an ISP, hosting provider, or large enterprise. ASNs are used by internet routers to exchange routing information using BGP (Border Gateway Protocol).
Why does my IP appear to be in the wrong city?
IP geolocation maps the IP registration location, not the physical device location. Mobile carriers often route traffic through a central gateway, making all users on that carrier appear in one city. VPNs show the VPN server location. Dynamic IPs may not have been re-mapped after reassignment.
Is IP Address Lookup free to use?
Yes. IP Address Lookup on ToolBox is completely free. The underlying data comes from ipapi.co, which provides a free tier of 1,000 lookups per day, more than sufficient for everyday use.

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