1. Computing

Tracing Public IP Addresses - IP Locators

Various tools and methods exist to trace a public IP address to a specific computer or general geographic location. IP locators vary in their implementation, and success is far from guaranteed for several technical reasons.

Find the Owner of an IP Address
Every public IP address used on the Internet is registered to an owner. Follow these instructions to find the owner of an IP address.

Finding IP Addresses in Received Emails
Emails normally contain the IP address of the sender in the email header. Finding the IP address can be tricky and its possible to find a wrong one. Follow these instructions to determine the sender's actual IP address.

Find the IP Address of a Web Site
Each Web site on the Internet possesses at least one IP address. Follow these instructions to find the IP address for a Web site.

Does IP Address Location (Geolocation) Really Work?
So-called geolocation systems attempt to map IP addresses to geographic locations using large computer databases. Some geolocation databases are available for sale, and some can also be searched for free online. But does all of this geolocation technology really work? Answer: it depends.

Check IP Addresses on DNS Blacklists
One way to confirm whether email or other messages you're receiving are spam is to check its originating IP address against one of the public DNS blacklist - DNSBL - databases available online.

WHOIS
WHOIS is a network protocol and client/server system used on the Internet to look up the names, IP addresses, and owners of server computers.

Traceroute
Traceroute is a utility program that monitors the network path of test data sent to a remote computer. On Unix and Linux computers, the traceroute application is available in the shell, while on Windows computers, the tracert program can be accessed from DOS.

What Is the IP Address of YouTube?
People sometimes want to know YouTube's IP address when they are unable to connect to the site by its host name. Knowing its IP address may not solve this problem, however.

What Is the IP Address of Facebook?
People sometimes want to know Facebook's IP address when they cannot connect to www.facebook.com. Like many popular Web sites, Facebook utilizes multiple Internet servers and IP addresses.

Geobytes IP Address Locator Tool
Enter a public IP address into this tool to identify the geographic location where that address is in use. Note that these mapping services are able to provide general locations, but their accuracy / precision is limited to a fairly broad area.

IP2Location Product Demo
This service takes an IP address and produces a physical location along with latitude/longitude, name and timezone of the Internet service provider.

What Is the IP Address of Google?
Google utilizes multiple Internet servers and IP addresses like many popular Web sites. Individuals may want to use Google's IP address when they are analyzing Web server logs or when they cannot connect to www.google.com.

What Is the IP Address of Yahoo!?
Unable to reach yahoo.com? You may be able to connect to Yahoo by an IP address. Like many popular Web sites, Yahoo! utilizes multiple Internet servers and IP addresses.

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