Freitag, 13. April 2012

Forward And Reverse IP Address Lookup

Reverse ip lookup is the primer tool in finding the IP address until a match on the domain name is found. The process is also called NSLOOKUP and DNS lookup. The whole lookup involves sending a message to an IP address and also requesting the PC that is located at the IP address that has been found.

As a rule, it is the same as the domain name, but a computer can host different domains. This is why the host name may be one of these domain names that are hosted or it can even be something absolutely different.

Forward And Reverse IP Lookup
An IP lookup translates computer names between the Internet and IP addresses. Its forward tool works converting the name to an address, and reverse IP lookup converts the number to a definite name.

Many users operate only reverse ip lookup, but there are numerous online services that offer the tools with both forward and reverse lookups for public addresses. These services usually rely on DNS – Domain Name System. They are called DNS lookup or reverse DNS lookup services.

Before the dynamic IP addressing was created, small business networks managed private lookups through host files. They contained lists of IP addresses and a number of associated computer names. Such mechanism is used today on some computer networks.

Tips For Better Understanding Reverse IP Lookup
The tool was initially designed for query support. There appeared a problem of difference in how the DNS organizes and how the addresses are assigned. An optimal way to solve the problem is to search in various domains, but it will take too much time and will require too much processing.

The reverse IP lookup is necessary, because when the addresses are read, they are interpreted. The order of IP addresses should be reversed, when a domain tree is built. These addresses can be delegated to organizations, because they are assigned a limited set of addresses within the defined classes.

If the queried name is not answerable from the server, normal resolution is used in order to locate the DNS server, which is authoritative for the lookup zone.

A reverse IP service recognizes and accepts all inverse messages and answers then. For those services running in Windows NT this support is available by default, when the computer is updated to Service Pack 4.

It doesn’t matter what computer one uses. Any PC has its own IP address and the name of the local host. Some computers have more than a usual IP address. To connect to other computers they have an address, which is known to other computers.


Read more articles from this author: Reverse Whois: Thin And Thick Lookups.

And also add him to friends at reverse ip.

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