IP Address Lookup
Look up detailed information about IP addresses including geolocation, ISP, hostname, and network details. Supports both IPv4 and IPv6 addresses with comprehensive data analysis.
IP Address Input
Sample IP Addresses:
Lookup Results
Enter an IP address and click "Lookup IP" to see the results here.
About IP Address Lookup
IP address lookup provides geolocation and network information about an IP address. This includes the approximate location, ISP, organization, and other network details. Note that geolocation accuracy varies and may not reflect the exact physical location of the device, especially for mobile networks and VPNs.
About IP Address Lookup
A comprehensive IP address lookup tool that provides detailed information about any IPv4 or IPv6 address including geolocation data, ISP details, hostname resolution, and network infrastructure information. This tool helps identify the origin, ownership, and technical details of IP addresses for security analysis and network troubleshooting.
Why use a IP Address Lookup?
Understanding IP address details is crucial for cybersecurity, network administration, and web analytics. This tool eliminates the need for multiple services by providing comprehensive IP intelligence in one place, helping you identify potential threats, analyze traffic sources, and troubleshoot network connectivity issues efficiently.
Who is it for?
Essential for cybersecurity professionals investigating threats, network administrators troubleshooting connectivity issues, web developers analyzing traffic sources, and digital marketers understanding visitor demographics. Perfect for anyone who needs to identify and analyze IP address information for security or analytical purposes.
How to use the tool
Enter an IPv4 or IPv6 address in the input field
Click lookup to retrieve comprehensive information about the IP address
Review geolocation data including country, city, and coordinates
Analyze ISP, organization, and network infrastructure details
Use the information for security analysis, troubleshooting, or compliance reporting
Frequently Asked Questions
How do I look up an IP address?
Paste any public IPv4 or IPv6 address. The tool returns geolocation (country, region, city, approximate coordinates), the ASN (Autonomous System Number) identifying the network operator, the registered organization (from WHOIS), and the reverse DNS PTR record if one exists. All lookups query public databases — MaxMind GeoLite2 for geolocation, RIR WHOIS (ARIN/RIPE/APNIC/LACNIC/AFRINIC depending on the IP's region) for registration data, and live DNS for reverse PTR. Private/internal IPs (10.x, 172.16-31.x, 192.168.x, 169.254.x) return no useful data — they're meaningful only inside their network.
Can I find the exact location of an IP address?
No. IP geolocation provides approximate location at the city level (sometimes only country level for mobile/CGNAT IPs) — typically accurate to within 50km, often much worse. The geolocation comes from registrar data and ISP allocations, not GPS or precise positioning. Mobile IPs in particular can geolocate hundreds of kilometers from the actual user (the carrier's NAT gateway). VPN/proxy IPs report the VPN endpoint's location, not the user's. Treat IP geolocation as a coarse signal for fraud-risk scoring, content geo-targeting, and language defaults — never as authoritative location for legal, billing, or law-enforcement purposes.
Is online IP lookup private?
This tool queries the IP via our edge proxy. The proxy doesn't store the queried IP or correlate it to your account — there's no signup. Public WHOIS and geolocation databases see the IP we ask about (this is true of any IP lookup tool). The queried IP itself is what it is — looking it up doesn't change anything about its visibility. If you're investigating your own IP, your ISP and the destination of any traffic you generate already see your IP; running it through this tool reveals only what's publicly accessible. For ad-hoc security investigations, the queries don't add meaningful exposure.
What's the difference between IPv4 and IPv6 addresses?
IPv4 uses 32-bit addresses (4 numbers 0-255, e.g., 192.0.2.1) — ~4.3 billion total addresses, all allocated since 2011. IPv6 uses 128-bit addresses (8 groups of 4 hex digits, e.g., 2001:db8::1) — 3.4 × 10^38 total, effectively inexhaustible. In 2026, ~45% of internet traffic to major destinations (Google, Cloudflare) is IPv6. Your machine likely has both; modern OSes prefer IPv6 when available (Happy Eyeballs algorithm). Practical implications: AAAA records are required for IPv6 reachability, server software must bind to IPv6 explicitly, firewall rules need duplication, and ASN/geolocation data for IPv6 is sometimes sparser than for IPv4.
What is an ASN and why does it matter?
ASN (Autonomous System Number) identifies a network operator — typically an ISP, hosting provider, or large enterprise that controls its own routing. Examples: AS15169 = Google, AS13335 = Cloudflare, AS16509 = Amazon AWS, AS8075 = Microsoft. Every public IP belongs to an ASN. Why it matters: ASN tells you who runs the network. For mail deliverability investigations, the ASN of a sending IP reveals whether mail came from a legitimate ESP, your own infrastructure, or a known spam-source network. For abuse triage, the ASN is the right entity to report to via the WHOIS abuse contact. Use the [IP Blacklist Check](/tools/ip-blacklist-check/) tool to verify sending-IP reputation.
How do I find the IP address of a website?
Use this tool's companion [DNS Lookup](/tools/dns-lookup/) — query the A record for the domain (or AAAA for IPv6). The result is the IP currently associated with that hostname. Note that many sites use CDNs (Cloudflare, Akamai, Fastly), so the IP you see belongs to the CDN edge, not the origin server. Sites with geographically distributed deployments serve different IPs depending on the resolver's location. For load-balanced sites with multiple A records, your DNS resolver picks one (usually round-robin). The IP you get is one valid path to the site, not necessarily the only one.
How does IP lookup relate to email header analysis?
Email headers carry the IPs of every mail server that handled the message in transit (Received: lines). When investigating phishing, deliverability problems, or spoofing, you extract the originating IP from the deepest Received: header and look it up to identify the actual sending network — which often contradicts what the From: field claims. The [Email Header Analyzer](/tools/trace-email/) tool automates this end-to-end: it parses the headers, extracts every IP, runs the lookups, and presents the path with geolocation and ASN per hop. For one-off IP investigations, use this tool directly; for full email forensics, use Trace Email.
Why does PTR (reverse DNS) sometimes show nothing?
PTR records (reverse DNS — mapping an IP back to a hostname) are configured by the network operator who owns the IP, not by you. Many IPs don't have PTR records: consumer ISP IPs often skip PTR, cloud providers may not auto-configure PTR for VMs, and CGNAT/mobile IPs typically lack meaningful PTR. When PTR is absent or generic (e.g., 'ip-192-0-2-1.somecloud.com'), there's no useful information about the host running on that IP. For mail servers, PTR is critical for deliverability — many anti-spam policies require valid PTR matching the HELO/EHLO greeting (Forward-Confirmed Reverse DNS). For other IPs, PTR is informational only.
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