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IP Lookup Online — Free IP Address Geolocation, ISP & Security Check

IP Lookup

Look up geolocation, network, and security details for any IP address.

Free online IP address lookup tool. Enter any IPv4 or IPv6 address, or a domain name, to instantly retrieve its geolocation (country, region, city, coordinates), network details (ISP, organization, ASN, reverse DNS), and security flags (proxy, VPN, hosting, mobile). Check your own public IP with one click. View timezone and local time at the IP's location. Copy results as structured JSON or share via URL. Powered by a server-side API for accuracy — no data is stored or logged.

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Tags: ip, lookup, geolocation, whois, network, dns, asn

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How to IP Lookup Online

  1. Enter an IPv4 address (e.g. 8.8.8.8), IPv6 address, or domain name into the input field — or click 'My IP' to look up your own public IP address.

  2. Click Lookup or press ⌘↵ (Mac) / Ctrl+Enter (Windows) to retrieve the IP information.

  3. View the structured results: geolocation (country, city, coordinates), network details (ISP, ASN, reverse DNS), and security flags (proxy, VPN, hosting detection).

  4. Copy individual fields by clicking them, copy the full result as JSON with ⌘⇧C, or share your lookup via a URL.

  5. Use the history dropdown to quickly re-lookup previously queried IP addresses.

IP Lookup Features

  • IPv4 and IPv6 address lookup with automatic version detection and validation.

  • Domain name resolution: enter any domain to resolve its IP and get full geolocation and network details.

  • One-click 'My IP' button to instantly look up your own public IP address with full details.

  • Geolocation data: country (with flag), region/state, city, postal code, latitude, longitude, and timezone.

  • Network intelligence: ISP name, organization, ASN (Autonomous System Number), and reverse DNS (PTR record).

  • Security detection: proxy, VPN, Tor, hosting/datacenter, and mobile connection flags.

  • Timezone info with current local time at the IP's geographic location.

  • Country metadata: currency code and symbol, calling code, and primary languages.

  • Map link: click coordinates to open the location in Google Maps.

  • Recent lookup history stored locally for quick re-lookups.

  • Structured JSON output: copy the full API response for use in scripts and automation.

  • Shareable URLs: the IP you looked up is stored in the URL for easy sharing.

  • Server-side processing: API calls are made from our server, so no CORS issues or exposed API keys.

  • Keyboard shortcuts for power users: ⌘↵ to lookup, ⌘⇧M for My IP, ⌘⇧C to copy JSON.

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 computer network. IPv4 addresses use the familiar dotted-decimal format (e.g. 192.168.1.1), while IPv6 addresses use a longer hexadecimal format (e.g. 2001:4860:4860::8888). IP addresses are used to route traffic between devices on the internet.
Is this IP lookup tool free?
Yes, DevFlow IP Lookup is completely free with no usage limits for normal use. Results are processed on our server using a free geolocation API — no account or API key required.
Is my data safe?
We do not log, store, or track the IP addresses you look up. Lookups are processed server-side to access the geolocation API, but no query data is persisted. Your lookup history is stored only in your own browser's localStorage.
How accurate is IP geolocation?
IP geolocation is typically accurate to the country level (99%+), city level (~80-90%), and within 25-50 km of the actual location. It cannot pinpoint an exact street address. Accuracy varies by ISP and region — large ISPs in metropolitan areas tend to have better accuracy. Mobile IPs and VPN/proxy IPs may show the location of the network provider rather than the actual user.
What is 'My IP'?
The 'My IP' button looks up the public IP address of your current internet connection. This is the IP that websites and services see when you connect to them. If you are behind a NAT, firewall, or VPN, it will show the exit IP, not your device's local IP address.
What is an ASN?
An ASN (Autonomous System Number) identifies a network or group of networks under a single administrative entity on the internet. For example, AS15169 is Google, AS13335 is Cloudflare, and AS7922 is Comcast. ASNs are used in internet routing (BGP) and can tell you which organization controls the network an IP belongs to.
Can it detect VPNs and proxies?
The tool checks proxy and hosting flags from the geolocation provider. It can detect many VPNs, public proxies, and datacenter/hosting IPs. However, detection is not 100% — some premium VPN services and residential proxies may not be flagged. Tor exit nodes are generally detected.
What is reverse DNS?
Reverse DNS (rDNS) is the process of resolving an IP address back to a hostname. For example, 8.8.8.8 resolves to dns.google. Not all IPs have reverse DNS records configured — it is typically set up by the ISP or hosting provider. Reverse DNS is commonly used in email deliverability, security analysis, and network debugging.
Can I look up private IP addresses?
No. Private IP ranges (10.x.x.x, 172.16-31.x.x, 192.168.x.x) and localhost (127.0.0.1, ::1) are not routable on the public internet and cannot be geolocated. The tool will return an error explaining that the IP is a private/reserved address.
Does it support IPv6?
Yes. Enter any valid IPv6 address in full, shortened, or mixed notation. The tool validates the format and queries the geolocation API with the IPv6 address. The result includes an IPv6 version badge.
Can I look up a domain name?
Yes. Enter any domain name (e.g. google.com) and the tool resolves it to an IP address using DNS, then performs the full geolocation lookup on the resolved IP. The original domain and resolved IP are both shown in the results.

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