IP Address Lookup - Find Location, ISP & Network Info
We don't log your searches or store lookup results
Look up any IPv4 or IPv6 address. Get 10 data fields from 4 sources in under 500ms.
Free IP Lookup Tool
Enter an IP address above to get started
We'll show you location, ISP, ASN, and more
Look Up Any IP Address for Location & Network Info
IP Lookup reveals information about any IP address—the unique identifier assigned to every device connected to the internet. Enter an IPv4 or IPv6 address, and we query multiple databases to show you who owns it, where it's registered, and what network it belongs to.
What You'll Discover
Can Find
- City-level location (~50km accuracy)
- ISP / Network provider name
- Organization that owns the IP block
- ASN and network range (CIDR)
- Hostname (if PTR record exists)
Cannot Find
- Exact street address
- Personal identity (name, email)
- Physical device location (VPNs, mobile)
- Browsing history or activity
How to Look Up Any IP Address
Get detailed IP information in 3 steps
Enter the IP Address
Type or paste any IPv4 address (like 8.8.8.8) or IPv6 address (like 2001:4860:4860::8888) into the search field.
Click Lookup
We query 4 data sources in parallel. Results appear in under 500ms for most IPs.
View Results & Export
See 10 data fields with an interactive map. Export as JSON, CSV, or plain text for your records.
Understanding Your IP Lookup Results
We display 10 data fields from 4 sources. Here's what each means:
Country & City
Shows where the IP is registered, not necessarily the physical device location. VPN users will see their VPN server's location. Mobile users may see their carrier's hub city. Accuracy is city-level, typically within 50 kilometers.
United States, Mountain View
ISP (Internet Service Provider)
The company that owns this IP address block. For 8.8.8.8, this shows 'Google LLC' because Google owns that IP range. For home users, this is your internet provider (Comcast, Verizon, etc.).
Google LLC
ASN (Autonomous System Number)
A unique identifier for networks on the internet. Large organizations and ISPs have their own ASN. AS15169 is Google's network—any IP in this AS belongs to Google. Think of it as a network's license plate.
AS15169
Network CIDR
The IP block range this address belongs to. '8.8.8.0/24' means 256 addresses (8.8.8.0 to 8.8.8.255). The /24 indicates the block size—smaller numbers mean larger blocks.
8.8.8.0/24
Hostname
The domain name associated with this IP via reverse DNS (PTR record). For 8.8.8.8, this shows 'dns.google'. Not all IPs have hostnames—it requires the IP owner to configure a PTR record.
dns.google
Organization
The registered owner of this IP range from RDAP registry data. Often matches the ISP, but businesses may show their company name. This comes from regional internet registry (RIR) records.
Google Public DNS
IP Version
IPv4 uses 32 bits (like 192.168.1.1) with ~4.3 billion possible addresses. IPv6 uses 128 bits (like 2001:4860:4860::8888) with practically unlimited addresses. We support both.
IPv4
Timezone
The timezone for the IP's registered location in IANA format. Useful for understanding when users are active or scheduling across regions.
America/Los_Angeles
Region
The state, province, or region where the IP is registered. Combined with city data, this gives you a more specific location.
California
Postal Code
The ZIP or postal code for the IP's registered location. Accuracy varies—this is the most granular location data available from IP geolocation.
94043
Why Choose Our IP Lookup Tool
More data, faster results, no ads
10 Data Fields
More information than most competitors. See location, ISP, ASN, hostname, CIDR, organization, timezone, and more.
4 Data Sources
We combine MaxMind GeoLite2 databases, DNS reverse lookup, and RDAP registry data for comprehensive results.
Instant Results
Local databases mean no external API delays. Most lookups complete in under 500ms.
IPv4 & IPv6 Support
Full support for both IP versions. Enter any valid address format.
Interactive Map
Visualize IP location on a Leaflet.js map with accuracy radius indicator.
Export Options
Download results as JSON, CSV, or plain text. Copy with one click.
Free API Access
Use programmatically at /api/v1/ip-lookup. No API key required.
No Ads, No Tracking
Clean interface. We don't log your searches or track your lookups.
When You Need IP Lookup
Common scenarios for checking IP address information
Security Investigation
Investigate suspicious login attempts or email origins. Identify the origin country, ISP, and whether it's a known VPN or proxy.
Network Troubleshooting
Debug network issues by identifying the ASN and network path. Diagnose routing issues or ISP problems.
Compliance Verification
Verify that traffic comes from allowed geographic regions. Check IP geolocations against GDPR, data residency, or other compliance requirements.
Development & Testing
Build geolocation features and use our API to validate your implementation against known IP locations.
OSINT Research
Investigate network infrastructure or trace digital footprints. Gather ISP, ASN, and organization data to map network ownership.
Email Header Analysis
Check the origin of suspicious emails. Extract the originating IP from email headers and look up its location and ISP.
How IP Lookup Works
We query 4 data sources in parallel to build a complete IP profile.
Our Data Sources
We combine four sources: MaxMind GeoLite2-City (country, city, coordinates, timezone), MaxMind GeoLite2-ASN (ISP, ASN), DNS reverse lookup (hostname/PTR record), and ipwhois RDAP (organization, network CIDR, registry). Local databases provide instant results; network lookups are cached 24 hours.
Why Local Databases?
Most IP lookup tools call external APIs for every query. We store MaxMind databases locally, which means: no API rate limits (query as much as you want), faster results (no network round-trip for geolocation), better privacy (your lookups don't go to third parties), and higher reliability (no dependency on external API uptime).
Accuracy & Limitations
IP geolocation is based on registration data, not GPS. Country detection is 95-99% accurate. City-level accuracy is 50-75%, typically within 50km. We can tell you approximate location, network ownership (ISP, organization), and routing information (ASN, CIDR block). We cannot tell you exact street address, physical device location (especially for VPNs, mobile), or personal identity.
IP Lookup vs WHOIS vs DNS
IP Lookup takes an IP address and returns location, ISP, and ASN. WHOIS Lookup takes a domain or IP and returns registration info and owner details. DNS Lookup takes a domain and returns DNS records (A, MX, etc.). Use IP Lookup when you have an IP and need location/network info. Use WHOIS for registration details. Use DNS for domain-to-IP resolution.
IP Lookup Specifications
- Input Types
- IPv4, IPv6
- Data Sources
- MaxMind GeoLite2, DNS, RDAP
- Response Time
- 100-500ms typical
- Export Formats
- JSON, CSV, Plain Text
- API Endpoint
- /api/v1/ip-lookup
- Cache Duration
- 1 hour
- Rate Limit
- None
- Registration
- Not required
Frequently Asked Questions
What information can you get from an IP address?
You can find: geographic location (country, region, city), ISP/network provider, ASN number, hostname (if configured), network CIDR block, and organization name. You cannot find personal information like name, physical address, or identity—only the ISP has that data, and it requires a legal warrant to obtain.
How accurate is IP geolocation?
City-level accuracy—typically within 50 kilometers. Country detection is 95-99% accurate, but city-level drops to 50-75%. Accuracy varies by region and ISP. Mobile networks and VPNs often show incorrect locations since they route traffic through different regions.
Can you find someone's exact location from their IP?
No. IP geolocation only provides approximate location—city level at best, often 50km off. The IP shows where the network is registered, not where the device physically is. VPN users show their VPN server location. Only ISPs have subscriber address data, which requires legal process to access.
Is IP lookup legal?
Yes. IP addresses are publicly routable identifiers, and geolocation/ASN databases contain publicly available network registration data. Looking up IP information is legal and commonly done for security, troubleshooting, and research. However, using this information for harassment or stalking is illegal.
What does ASN mean?
ASN stands for Autonomous System Number—a unique identifier for networks that manage their own routing on the internet. Large ISPs, tech companies, and content providers have their own ASN. For example, AS15169 is Google's network. If you see this ASN, the IP belongs to Google's infrastructure.
What is Network CIDR?
CIDR (Classless Inter-Domain Routing) notation shows an IP block range. For example, '8.8.8.0/24' means 256 addresses from 8.8.8.0 to 8.8.8.255. The number after the slash indicates the block size—/24 = 256 IPs, /16 = 65,536 IPs. It helps identify how many addresses an organization controls.
Why does my IP show a different city than where I am?
Several reasons: (1) Your ISP registered the IP block in a different city, (2) You're using a VPN or proxy, (3) Mobile carriers route through hub cities, (4) The geolocation database hasn't been updated. IP geolocation shows registration location, not physical device location.
Can the police track an IP address?
Law enforcement can request subscriber information from ISPs with proper legal authority (subpoena, warrant). ISPs maintain logs connecting IP addresses to customer accounts. Public IP lookup tools like ours only show publicly registered network data—not personal subscriber information.
What is the difference between IPv4 and IPv6?
IPv4 uses 32-bit addresses (like 192.168.1.1) with ~4.3 billion possible addresses—we've run out. IPv6 uses 128-bit addresses (like 2001:4860:4860::8888) with practically unlimited addresses. IPv6 is being adopted gradually, but most internet traffic still uses IPv4. Our tool supports both.
Do you store the IPs I look up?
No. We don't log your searches or store lookup queries. Results are cached temporarily (1 hour) for performance but not associated with your identity. We have no way to see what IPs you've looked up.
Can I use this programmatically (API)?
Yes! Use our API at /api/v1/ip-lookup?ip=8.8.8.8. No API key required. The response includes all 10 data fields in JSON format. See our API documentation for details.
Why is the hostname sometimes missing?
Not all IPs have reverse DNS (PTR) records configured. Hostname lookup depends on the IP owner setting up a PTR record, which is optional. Many residential IPs and some server IPs don't have hostnames configured.
What is reverse IP lookup?
Reverse IP lookup finds all domains hosted on an IP address—different from our IP lookup which shows network/location data. For hostname (IP to domain) lookup, we query DNS PTR records. For full reverse IP (IP to all hosted domains), see our Reverse IP Lookup tool.
How do I find my own IP address?
Use our What Is My IP tool—it automatically detects your public IPv4 and IPv6 addresses without you entering anything. This IP Lookup tool is for looking up any IP address, not just your own.
Ready to Look Up an IP?
Enter any IPv4 or IPv6 address above. Instant results, 10 data fields, free API.
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