Find host ip что это

This page can be used to find the IP of a host machine (convert host to IP) or domain name (convert domain name to ip address) or find the name of one of the hosts at an IP address (convert ip address).

It will also show the location of IP address. The country data is about 94% accurate.

Convert Host Name to IP Address or Vice Versa

The process of finding the IP address is achieved by searching the DNS (Domain Name Servers) until a match on the domain name is found. This process is also known as DNS lookup, NSLOOKUP or (erroneously) IP lookup

The process of finding the host name (or domain name) from an IP address involves sending a message to the IP address and requesting the computer located at that IP address to return its name. Usually this will be the same as the domain name. However, many computers host many domains so the host name may be one of the domain names hosted or it could be something totally different.

There are some special IP addresses. 127.0.0.1 is always the IP address of every computer. No matter which computer you use, it will always have an IP address of 127.0.0.1 and a name of ‘localhost’. In addition, a computer can have more than one IP address. In order to connect to other computers it will have an IP address that is known to other computers.

Host Name or Domain Name

There is often confusion about what is a host name and what is a domain name.

A domain name is the name that is purchased from a registrar. It will be something like hcidata.com or hcidata.co.uk. Note that there is no www at the beginning of a domain name. A domain name can be subdivided into sub-domains — for example www.hcidata.com. Once you own a domain, there is no reasonable limit to the number (or names) of the sub-domains you can create. A sub-domain can be allocated to a host machine — for example a PC. In fact many sub-domains can be allocated to the same host machine. The way sub-domains are allocated to a host machine is to create a record in the DNS (Domain Name Servers) that records the sub-domain name and the IP address of the host machine. Any requests for a sub-domain (e.g. www.hcidata.com) are converted to an IP address by DNS and the IP address is used to route the request through the network until it reaches the host machine.

In the early years of the Internet, each sub-domain would have a unique IP address so it was common for a host machine to have only one sub domain name. Nowadays, the common practice is to have many sub-domains with the same IP address. It is also common for the domain name to be converted to the IP address of the host machine that runs the www sub domain.

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How to find IP Address from hostname in Windows Linux and Unix — Example

Finding IP address from hostname in UNIX and Linux Example

1) IP address using hostname command in Unix/Linux

2) IP address using ping command in UNIX or Linux

/test ping trading_system

3) IP address using nslookup command in UNIX or Linux

/test nslookup trading_system

4) How to find the IP address using the ifconfig command

IP Address from hostname in Windows Linux and Unix

Now, let’s see some examples to convert hostname to IP address in Windows, Linux, and other UNIX based systems.

1. How to find the IP address of your computer in Windows

2. How to find the external IP address of your network or computer

11 comments :

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December 2, 2011 at 7:27 AM heera said.

Thanks . I was looking for exact same information, command to find hostname from ip address. we have linux machines in our lan network and I just joined. this unix tips will surely help me lot.

December 4, 2011 at 11:57 PM unixman said.

hostname -i will not work to find IP address of another computer, it will only work for current host. I think only available option to get IP address of another computer is «nslookup»

December 5, 2011 at 8:56 PM Anonymous said.

how to check the loction of my friend while chatting.

please help me one of my friend told me he is in us but i think he is telling lie so please help me to guess from where he is calling .

send the answer at papadonpart2@gmail.com

January 3, 2012 at 5:22 AM Jimm said.

how to find IP address in Unix operating system which doesn’t have nslookup command ? is there way to determine IP address without using nslookup

January 10, 2012 at 5:15 PM King said.

Thanks for this. i was looking for this «nslookup» command

May 30, 2012 at 2:05 AM Anonymous said.

Hello Javin, How will you convert an IP address to Hostname in Java? Can you please write about that? Thank you sir.

July 17, 2013 at 11:15 PM Samir said.

I am using linux system for my office work first time even though I have hosted all my website at linux hosting servers. There are few things I should have learned before like you let us know about ip host, pinging commands at linux system. I am a fast leaner yet I think it will take a month to get used to it as always typed wrong command and right click is something which we always used at windows.

July 24, 2013 at 1:38 AM Anonymous said.

You can also use ‘host’ command to display IP address associated with any DNS name (or hostname). It’s a DNS lookup utility similar to nslookup but it doesn’t print name of DNS server used to resolve addresses. In fact, host command output is much cleaner than nslookup, you will see something like this

host yahoo.com
yahoo.com has address 130,.40.23.19
yahoo.com has address 130,.40.23.29

It will print all IP address associated with a DNS name and registered in DNS server.

August 4, 2015 at 8:03 PM Anonymous said.

@Anonymous, indeed I would prefer host and nslookup any day than other commands, but you should aware that there is something called nscd which keeps a cache of most used queries on naming server. If a host got IP address change but still resolving to old IP address then this is one place you should check. Sometime name server can also be faulty.

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i need to find the host name of a UNIX host whose IP is known with out login to that UNIX host

11 Answers 11

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You can do a reverse DNS lookup with host , too. Just give it the IP address as an argument:

Another NS lookup utility that can be used for reversed lookup is dig with the -x option:

Quoting from the dig manpage:

Reverse lookups — mapping addresses to names — are simplified by the -x option. addr is an IPv4 address in dotted-decimal notation, or a colon-delimited IPv6 address. When this option is used, there is no need to provide the name, class and type arguments. dig automatically performs a lookup for a name like 11.12.13.10.in-addr.arpa and sets the query type and class to PTR and IN respectively.

For Windows ping -a 10.10.10.10

For Windows, try:

They are almost same.

It depends on the context. I think you’re referring to the operating system’s hostname (returned by hostname when you’re logged in). This command is for internal names only, so to query for a machine’s name requires different naming systems. There are multiple systems which use names to identify hosts including DNS, DHCP, LDAP (DN’s), hostname , etc. and many systems use zeroconf to synchronize names between multiple naming systems. For this reason, results from hostname will sometimes match results from dig (see below) or other naming systems, but often times they will not match.

DNS is by far the most common and is used both on the internet (like google.com. A 216.58.218.142 ) and at home (mDNS/LLMNR), so here’s how to perform a reverse DNS lookup: dig -x ( nslookup and host are simpler, provide less detail, and may even return different results; however, dig is not included in Windows).

Note that hostnames within a CDN will not resolve to the canonical domain name (e.g. «google.com»), but rather the hostname of the host IP you queried (e.g. «dfw25s08-in-f142.1e100.net»; interesting tidbit: 1e100 is 1 googol).

Also note that DNS hosts can have more than one name. This is common for hosts with more than one webserver (virtual hosting), although this is becoming less common thanks to the proliferation of virtualization technologies. These hosts have multiple PTR DNS records.

Finally, note that DNS host records can be overridden by the local machine via /etc/hosts. If you’re not getting the hostname you expect, be sure you check this file.

DHCP hostnames are queried differently depending on which DHCP server software is used, because (as far as I know) the protocol does not define a method for querying; however, most servers provide some way of doing this (usually with a privileged account).

Note DHCP names are usually synchronized with DNS server(s), so it’s common to see the same hostnames in a DHCP client least table and in the DNS server’s A (or AAAA for IPv6) records. Again, this is usually done as part of zeroconf.

Also note that just because a DHCP lease exists for a client, doesn’t mean it’s still being used.

NetBIOS for TCP/IP (NBT) was used for decades to perform name resolution, but has since been replaced by LLMNR for name resolution (part of zeroconf on Windows). This legacy system can still be queried with the nbtstat (Windows) or nmblookup (Linux).

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Resolve host name from IP address

I’m looking for a command line tool which gets an IP address and returns the host name, for Windows.

8 Answers 8

The command you are looking for is called nslookup , works fine for reverse lookups IFF someone has configured a reverse zone file, which they don’t always do.

if all the above fails, and you are specifically looking for a Windows machine, you can use

The data returned will be all the NetBIOS records the machine has. The one with a record type will usually be the machine’s name.

For many IP addresses you could just use ping -a, for example

If you use nslookup command with the IP address as its first argument will return the PTR record (the reverse entry) if it exists. For example:

(tested under Windows 10 x64)

From command line:

FOR /F «tokens=2 delims= » %A in (‘2^>NUL NSLOOKUP «%IP_ADDRESS%» ^| FINDSTR /C:»: «‘) do ECHO %A

Within a script:

FOR /F «tokens=2 delims= » %%A in (‘2^>NUL NSLOOKUP «%IP_ADDRESS%» ^| FINDSTR /C:»: «‘) do ECHO %%A

Two (side)notes:

To supress NSLOOKUP errors you have to use 2^>NUL instead of 1^>NUL
I’ve used FINDSTR /C to extract the value after the four whitespace characters. As the four spaces only seem to exist for the Name: entry, this appears to be only way to make it work on other localized systems.

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