User talk:Progpietravni60790

Reverse DNS (Domain Name System) research, also known by the composition (rDNS), may be the method by which someone can look up a number phone number lookup name given a particular IP. Reverse DNS can be known occasionally as reverse fixing. It is the contrary of DNS research, where an IP address is looked up by someone given a specific host name.

Why use Opposite DNS?

A reverse DNS lookup is generally performed for troubleshooting purposes. Typically, instruments such as a traceroute or perhaps a ping will do a DNS lookup to determine the movement of traffic from point to yet another. When accessing an individuals e-mail still another popular place for reverse DNS lookup is. Several contemporary email suppliers can do reverse DNS lookups to find out if an email was sent from a known spam address. Finally, opposite DNS may be used to make sure that there is a proper relationship between the owner of a domain name and the owner of a machine. This system, referred to as Forward Confirmed change DNS (FCrDNS) can be used to put a stop to spammers and phishing websites.

What's IPv4 Reverse DNS lookup?

IPv4 Reverse DNS is a reverse IN-ADDR entry that is used by a type of reverse DNS with the particular domain in-addr.arpa. The IP address represented in the in-addr.arpa domain is written in reverse order to the normal way that the IP address is written. For example, in case a person was doing a domain lookup for an address such as 192.168.1.1, he would do the lookup using 1.1.168.192.in-addr.arpa.

What's IPv6 Reverse DNS lookup?

IPv6 Reverse DNS lookup is just a kind of slow DNS that uses the special domain ip6.arpa. Unlike IPv4 Reverse DNS lookup, IPv6 Reverse DNS lookup does not make use of the common IP address design of finding out about number names. Alternatively, it uses a sequence of nibbles, or four bit aggregations, in reverse order with each number separated by way of a time. For example, if a person was doing a domain lookup for an address such as 2001:0db8:0:0:0:0:1428:57ab he would do the lookup using b.a.7.5.8.2.4.1.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa.

When you will find multiple host names assigned to 1 IP what goes on?

Although this practice is sometimes frowned upon, a reverse DNS lookup will have a way to ascertain most of the host names associated with a specific INTERNET protocol address. Many cheap website hosting programs can provide shared virtual hosts where many sites share space on a single IP address. It could lead to problems with other services, while this doesn't affect the validity of the data came back by way of a reverse DNS lookup.