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IP Address Lookup

An IP address lookup tool determines the location of an IP address and other information about the user. Some of the data shown will be the city/town, state, zip code, and country of the IP address. You can also view the ISP (internet service provider) that the person is using, along with the time zone. Although you won’t see the exact physical location, you can get the approximate region. However, keep in mind factors may affect the results. For example, if someone is using a VPN, it could mask their IP address and show one from an entirely different location.

What Information Does a Reverse IP Lookup Provide?

A reverse IP lookup provides the hostname or domain address associated with an IP address. It could be a sub-domain or primary domain. A reverse DNS search looks for PTR (pointer) records. Without PTR records, the reserve search cannot be completed. Typically, mail servers use a reverse IP lookup to validate an email before routing it through the system.

What are the Different Types of IP Addresses, and How are They Used?

There are four main types of IP addresses: public, private, static, and dynamic.

Public - a public IP address is the primary IP address associated with your entire network. This address is typically assigned to you by your internet service provider (ISP).

Private - a private IP address is one assigned to every device on the network. Each connected item, such as a computer, cell phone, IoT device, etc., will have its own private IP.

Dynamic - dynamic IP addresses are constantly changing. They are issued by the ISP but may change at any time. Each time a client connects to the source, the dynamic IP address changes. For example, your ISP may assign you an IP, but if you lose power when it comes back on, your IP will also change.

Static - a static IP stays the same regardless of how often the client disconnects and reconnects to the source. A static IP is assigned by a Dynamic Host Configuration Protocol (DHCP) server. For instance, if you need to use a computer remotely, you will give it a static IP so you could always connect regardless of how your dynamic IP changes.

There are two versions of IP addresses: IP4 and IP6. IP4 was the first version used by ARPANET in 1983. However, IP4 started running out of addresses as the internet expanded; therefore, the Internet Engineer Taskforce created IP6 as a solution. The new format uses 340 undecillion unique address spaces.

Websites use either shared (meaning many people share the same IP address) or dedicated (it belongs only to you) IP addresses.