Whois & Analysis for whatismyip.com

An IP address (abbreviation of Internet Protocol address) is an identifier assigned to each computer and other device (e.g., printer, router, mobile device, etc) connected to a TCP/IP network that is used to locate and identify the node in communications with other nodes on the network.

IP addresses are usually written and displayed in human-readable notations, such as 172.16.254.1 in IPv4, and 2001:db8:0:1234:0:567:8:1 in IPv6.

WHOIS (pronounced as the phrase who is) is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.

The protocol stores and delivers database content in a human-readable format.

The WHOIS protocol is documented in RFC 3912.

In computing, a user agent is software (a software agent) that is acting on behalf of a user.

One common use of the term refers to a web browser telling a web site information about the browser and operating system.

This allows the web site to customize content for the capabilities of a particular device, but also raises privacy issues.

Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP).

It is one of the core protocols of standards-based internetworking methods in the Internet, and was the first version deployed for production in the ARPANET in 1983.

It still routes most Internet traffic today, despite the ongoing deployment of a successor protocol, IPv6.

IPv4 is described in IETF publication RFC 791 (September 1981), replacing an earlier definition (RFC 760, January 1980).

An Internet Protocol Version 6 address (IPv6 address) is a numerical label that is used to identify a network interface of a computer or other network node participating in an IPv6 computer network.