E-mail: Whois lookup tool is designed to allow people to find the responsible agency and administrator when there is network problem. Administrator:Internet Assigned Numbers Authority.These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Standard document, RFC 1122, which can be found here: 127.0.0.1 is the most commonly used address and is called the "loopback" address. Description:Addresses starting with "127." are used when one program needs to talk to another program running on the same machine using the Internet Protocol.Administrative agency: SPECIAL-IPV4-LOOPBACK-IANA-RESERVED.Using the Whois tool to look up 127.0.0.1 will yield a lot of information, and we pull out the main information as follows: You can use Whois lookup to find out the administrative agency of an IP address, and even the phone number and other contact information of the administrator. Note: If 127.0.0.1 is forcibly used as the router IP address, it may cause IP conflicts and other situations that makes the router cannot be used normally. Therefore, 127.0.0.1 is not the private IP address used by the router. The IP addresses of these 3 IP segments can be used for routers, and other special IP addresses are classified as reserved IP addresses. Our website judges that the above 3 IP segments are classified as private IP addresses. Reserved IP Addresses: There are also some reserved addresses, which are used as private IP address space or for special purposes such as internal LAN.įrom the screenshot above, you can see the different locations and utilizations of public IP address and private IP address.įrom the definition of IANA, the private IP address is also classified as a reserved IP address.
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