About IP Address Lookup
The IP Address Lookup tool lets you detect your own public IP address instantly and perform a detailed analysis of any IPv4 or IPv6 address — all in your browser with no sign-up required.
Click Detect My IP to retrieve your current public IP address along with approximate geolocation metadata such as city, region, country, ISP, and timezone. Or paste any IP address into the analyser to see a full breakdown: address type (public, private, loopback, link-local, multicast), octet or group breakdown, 32-bit or 128-bit binary representation, hexadecimal encoding, and decimal value for IPv4.
For IPv6 addresses, the tool shows both the full expanded form and the compressed notation using :: for consecutive zero groups, along with the address scope (global unicast, link-local, unique local, loopback, multicast, 6to4, or NAT64).
This tool implements IP address parsing logic following the ip-address specification, covering all standard IPv4 classes and IPv6 address types as defined in RFC 1918, RFC 4291, and related standards.
Ideal for network debugging, learning about IP address structure, verifying VPN or proxy configuration, and quickly checking whether an address is public or private.
IP Address Lookup Features
- Runs entirely in your browser
IP Address Lookup processes everything client-side — nothing you paste, type, or upload is sent to a server.
- Free, instant, no sign-up
No account, no usage limits, no paywall. Results update as you type or click.
- Detect your public IP and analyse any IPv4 or IPv6 address in detail
The IP Address Lookup tool lets you detect your own public IP address instantly and perform a detailed analysis of any IPv4 or IPv6 address — all in your browser with no sign-up required.
How to Use IP Address Lookup
Click 'Detect My IP' to instantly find your current public IP address and location info.
Or type any IPv4 (e.g. 192.168.1.1) or IPv6 (e.g. 2001:db8::1) address into the analyser field.
See a full breakdown: address type, binary, hex, and decimal representations.
Click Copy next to any field to copy that value to your clipboard.
Examples
Practical Uses for IP Address Lookup
- Check your current public IP before setting up a firewall rule
- Verify a VPN or proxy is actually masking your IP address
- Check whether a given IP address is public or private during network debugging
- Get the binary breakdown of an IP to understand a subnet mask
- Look up basic geolocation info for troubleshooting a delivery or access issue
- Analyze an IPv6 address's scope during network configuration
Who Uses the IP Address Lookup Tool
- Network administrators check public IPs and analyze address types during firewall and network configuration.
- Remote workers verify their current public IP address and rough location for VPN or access troubleshooting.
- Developers analyze IP addresses appearing in logs to determine if they're public, private, or loopback.
- Security-conscious users confirm a VPN or proxy is masking their real IP address.
- Students learn IP address structure, binary representation, and address classes.
Comparisons
Public vs Private vs Loopback IP Addresses
Public IP addresses are globally routable and assigned by ISPs — this is the address the rest of the internet sees when you connect to a website. Private IP addresses (RFC 1918 ranges) are only meaningful within a local network and require NAT to reach the internet.
Loopback addresses (127.0.0.1 for IPv4, ::1 for IPv6) always refer back to the same machine you're on, used for local testing and internal service communication without ever touching a real network.
Frequently Asked Questions
What is my public IP address?
Your public IP is the address assigned to your internet connection by your ISP. Click 'Detect My IP' in this tool to see it. It may differ from your local/private IP used inside your home or office network.
What is the difference between IPv4 and IPv6?
IPv4 uses 32-bit addresses written in four decimal octets (e.g. 192.168.1.1) and supports about 4.3 billion addresses. IPv6 uses 128-bit addresses in hexadecimal (e.g. 2001:db8::1) and supports a practically unlimited number, solving the IPv4 exhaustion problem.
What are private IP addresses?
Private (RFC 1918) IPs are reserved for local networks: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. They are not routable on the public internet — your router uses NAT to translate them to your public IP.
What does the binary representation show?
The binary form shows exactly which bits are set in the address. For IPv4, each of the four octets becomes 8 bits. This is useful for understanding subnet masks, CIDR notation, and how routers match IP prefixes.
Is my IP address stored when I use Detect My IP?
No — this tool calls a public IP detection API in your browser to return your IP, but Toolgin does not log or store it. Only the IP info API provider briefly sees your request.
How do I verify my VPN is actually working?
Click Detect My IP before and after connecting to your VPN — if it's working correctly, your public IP address and reported location should change to match the VPN server's location.
Why does my IP address show a different city than where I actually am?
IP-based geolocation is approximate and based on ISP registration data, which often reflects a regional hub rather than your exact location — it's normal for it to show a nearby city.
How do I know if an IP address in my logs is internal or external traffic?
Paste the IP into the analyser — if it falls within a private range (10.x.x.x, 172.16-31.x.x, or 192.168.x.x), it originated from an internal network; otherwise, it's a public address reaching you from the internet.
Related Tools
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