IP Address Lookup

IP Address Lookup is a free online IP information lookup tool that can automatically display your current public IP address or look up an IPv4 or IPv6 address you enter. Depending on the available IP data sources, the tool can return geographic location, ISP, organization, ASN, network type, and other information. It also supports batch lookup and CSV export for website operations, server management, network troubleshooting, traffic source analysis, and development testing.

Key Features of IP Address Lookup

• Automatically detects and displays the visitor's current public IP address.
• Supports IPv4 address lookup.
• Supports IPv6 address lookup.
• Provides country, region, city, and other geographic information associated with an IP address.
• Provides ISP, organization, and network provider information.
• Provides ASN and other network information when available.
• Shows Proxy, VPN, Tor, and Hosting classifications when provided by the data source.
• Provides additional information such as timezone, country code, postal code, and IP type.
• Provides latitude and longitude when available and allows users to view the approximate location on a map.
• Saves recently queried IP addresses locally in the browser.
• Supports batch lookup of up to 20 IP addresses.
• Batch results can be copied or downloaded as a CSV file.
• Works online without installing additional software.

How to Look Up an IP Address

1. Open the IP Address Lookup tool. The page will automatically try to display your current public IP address.
2. To look up another IP address, click “Query Another IP” to open the input area.
3. Enter the IPv4 or IPv6 address you want to look up.
4. Click the query button.
5. Review the returned location, ISP, ASN, and other network information.
6. To look up multiple addresses, enter them in the batch lookup area.
7. After the batch lookup is complete, copy the results or download them as a CSV file.

What Is an IP Address?

An IP address, short for Internet Protocol Address, identifies a device or network interface in network communications. Network devices use IP addresses to exchange data and communicate. The two common IP versions are IPv4 and IPv6.

IPv4 Address

IPv4 uses 32-bit addresses and is commonly written as four groups of decimal numbers, such as 192.168.1.1. IPv4 is widely used on the internet and in local networks.

IPv6 Address

IPv6 uses 128-bit addresses and is commonly written in hexadecimal notation, such as 2001:db8::1. IPv6 provides a much larger address space to support the continued growth of internet-connected devices.

What Information Can an IP Address Lookup Provide?

An IP address lookup can provide different types of network and geographic information depending on the data source. The fields returned may vary according to the IP address, data source, and update time.

IP Geolocation

IP lookup databases can provide country, region, city, and other geographic information associated with an IP address. This information represents an estimated network location and does not indicate a user's precise physical location.

ISP and Organization

Some IP databases can identify the internet service provider, carrier, or organization associated with an IP address. This information can help analyze the network source and provider associated with an IP.

ASN Information

Lookup results may include an ASN, organization name, and other network information. An ASN (Autonomous System Number) identifies an autonomous system on the internet and can be useful for analyzing servers, providers, and network environments.

Network Type

Some data sources provide Proxy, VPN, Tor, or Hosting classifications. These results can help identify whether an IP may belong to a proxy, VPN, Tor network, or hosting environment, but the classification depends on the data source and should not be treated as an absolute determination.

Batch IP Lookup

The IP Address Lookup tool supports batch lookup of multiple public IP addresses. You can enter multiple IP addresses on separate lines or separate them with spaces, commas, or semicolons. Up to 20 IP addresses can be queried at once.

Batch lookup uses limited concurrency to reduce request pressure on external IP data services. Results are displayed in the same order as the input addresses even when individual requests finish at different times.

When the batch lookup is complete, you can copy the CSV data or download a CSV file for further data processing and network analysis.

Recent Lookup History

The tool can save recently queried IP addresses in the browser to make repeated lookups easier. Recent lookup history is stored in browser localStorage and is not uploaded to the server because of this history feature. You can clear the local history at any time.

Use Cases for IP Address Lookup

• Checking the current public IP address.
• Analyzing website traffic sources.
• Checking server network information.
• Troubleshooting websites and APIs.
• Basic network troubleshooting and analysis.
• Analyzing IP addresses in security logs.
• IP information lookup for development and testing.
• Checking network providers and ASN information.
• Organizing and analyzing IP address data in batches.

Important Considerations When Looking Up IP Addresses

IP Geolocation Is Not an Exact Physical Location

IP databases generally provide estimated network-level locations and cannot guarantee an exact physical location. Mobile networks, proxy servers, VPNs, CDNs, and corporate networks can cause the reported location to differ from the actual physical location.

Different Databases May Return Different Results

Different IP geolocation databases use different data sources, update schedules, and classification methods. As a result, the city, region, ISP, or network type reported for the same IP address may differ between services.

Network Type Classifications Are for Reference

Proxy, VPN, Tor, and Hosting classifications are based on network information or database analysis provided by the IP data source. They may contain false positives or reflect delayed updates, so they should not be used as the sole basis for security decisions.

Private IP Addresses Cannot Be Directly Mapped to Public Internet Locations

Ranges such as 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 are common private network ranges used for local communication. They cannot be mapped to public internet geolocation in the same way as public IP addresses.

Frequently Asked Questions

Can an IP address lookup find an exact address?

Usually not. IP geolocation mainly comes from IP databases and can generally indicate an approximate country, region, or city. It should not be used as evidence of an exact physical address.

Does IP lookup support IPv6?

Yes, when the lookup service and IP data source support IPv6. IPv6 uses a different address format from IPv4, so make sure the address is complete and correctly formatted.

Why is the city reported for an IP address inaccurate?

IP geolocation databases infer locations from network registration data, provider information, and other network data. Proxies, VPNs, mobile networks, CDNs, and delayed database updates can cause the reported city to differ from the actual location.

Can I check my current public IP address?

Yes. When you open the tool, it automatically tries to detect your current public IP and displays basic IP, location, and network information. If automatic detection fails, you can use “Query Another IP” to enter an IP address manually.

Can I look up multiple IP addresses at once?

Yes. The batch lookup feature supports up to 20 IP addresses at a time. Results are displayed in input order and can be copied or downloaded as a CSV file.

Is my IP lookup history uploaded to the server?

Recent lookup history is stored only in the current browser's local storage to make repeated lookups easier. It does not require an account and the history itself is not uploaded to the server. You can clear the local history at any time.

Can private IP addresses be looked up?

Private IP addresses are mainly used for communication within local networks and generally do not have public internet geolocation. This tool is therefore primarily intended for public IP addresses.

How IP Address Lookup Works

IP address lookup services generally match an input IP address against IP databases or network information services containing network registration, provider, ASN, and geographic data. Depending on the data source, the tool may return country, region, city, ISP, organization, ASN, network type, and other fields. Results can change over time as data sources are updated.

Map Location Information

Some lookup results include latitude and longitude. The tool can use these coordinates to show an approximate map location, but the coordinates are estimates based on IP network geolocation and do not represent the precise physical location of an IP user, device, or server.

Privacy and Security

An IP address is network identification information. When using an IP lookup tool, only query IP addresses that you are authorized to process and comply with applicable laws and privacy policies. IP geolocation, network type, and provider information may be affected by data source accuracy and update timing. Lookup results are intended for network information reference and should not be used as the sole basis for confirming a person's identity or precise location.