Erudition about IP Lookup for Domain

Domain carries a supreme importance in the internet technical world. Every server has an IP address and DNS that is domain name server act as a link between domain and the server where domain name server reflects the IP address of server. IP address is internet protocol that addresses. Every domain name is connected to the server in which IP plays an important role.

An IP Address is nothing but a particular number for your computer. Internet protocol is an address through which other computer can contact the computer. On connection to the internet the ip address may change, or there is also a possibility that the IP address remains constant. Based on the circumstances sometimes knowing the IP address is really helpful. An IP address consists of a series of four numbers, connected by dots. An example would be: 758.21.36.01.

Internet protocol helps to investigate many things in the network. During spamming, it helps to find out the IP of the spammer and block the same. At the same time during the tele conferencing, IP helps to reach at the respect computer. IP helps in numerous ways.

 IP lookup for domain is used for forward lookup and reverse lookup to be done in router. Whenever one needs the information about the host, server location, name servers IP look up comes into practice.

IP look up mainly has two working levels, following are the both

1.   Forward look up - This is mainly used to resolve name to ip
2. Reverse look up – This is use to resolve IP to domain name.

IP look up helps to trace many things related to the domain. The detail information can be gained from the IP look up. Information like The IP domain-lookup command is enabled by default. The purpose of this command is to assist the administrator resolve names into IP addresses so they may telnet to remote devices. This seems on the face of it a good setting; the issues are that the system does not understand the difference between a valid hostname and a typo.

Domain IP look up command is a default command. This command allows the router to presume that whichever non-keyword is being entered in the command is supposed to give an output into an IP address. It is mostly observed that, most people disable this command as it can be a recurring botheration for the people who have the tendency to mistype the words.

 Let’s have a glance on the technical terms like the command of the IP lookup for domain

 Syntax used in this is “Router(config)#ip domain-lookup”.

As we are aware that the router attempts to resolve the unrecognized command as an ip address, and takes awhile to do so. During the time of switch configuration the command is disabled with "no IP dns look up"

R2#wrong_command

Translating "wrong_command"...domain server (758.21.36.01.)

(758.21.36.01.)

Translating "wrong_command"...domain server (758.21.36.01.)

% Unknown command or computer name, or unable to find computer address

R2#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R2(config)#no ip domain-lookup

R2(config)#exit

R2#wrong_command

*Mar 1 02:13:07.747: %SYS-5-CONFIG_I: Configured from console by console

R2#wrong_command

Translating "wrong_command"

% Unknown command or computer name, or unable to find computer address

R2#

On having a glance on the above stated words it can be concluded that domain IP look up is an important element that can be used for multiple purposes.