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Ip address is an identifier assigned to a device when protocols of the Internet Protocol Suite are used to route traffic to. And from that device. The most commonly used protocol for address assignment is the Internet Protocol Address Autoconfiguration Protocol (IPv4). Or the Dynamic Host Configuration Protocol (DHCP) for IPv4.
ARIN offers public access to Internet resource registration data via a number of services. Traditionally, these services known in the industry as “Whois” in reference to the public data. Service of ARPANET, the precursor of today’s modern Internet. Whois services offered by all the Regional Internet Registries (RIRs) like ARIN. Most Internet Routing Registries (IRRs), and most domain name registries and registrars. The Whois protocol, originally specified in RFC 3912. Is a query and response protocol that used for querying databases that store registered users or assignees of an Internet resource. Such as IP addresses, Autonomous System Numbers (ASNs) or domain names. Whois is referred to as “port 43” in reference to the TCP port number. Assigned by the Internet Assigned Numbers Authority (IANA) for the Whois protocol. And to differentiate it from other ways of getting Whois data. (Source: www.arin.net)
Whois is a RFC 952 standard protocol that engages in querying whois servers to determine the authoritative owner. Or assigner of an IP address block. This system is often used to find a country (or other first-level geographic location) that is responsible for an IP address space; its associated telephone area code; a phone number; or a domain name.
The Whois database contains details such as the registration date of the domain name, when it expires. Ownership and contact information, nameserver information of the domain, the registrar via which the domain was purchased, etc. (Source: www.whois.com)
Whois is a query and response protocol that is widely used for querying databases that store the registered user information. IP address is a number that identifies a host on the Internet by its four-digit number (numeric value). In the Whois database, a registered user's IP address can be located in his or her personal details.