Finding an IP address - Geeks apply here!!!

[flowrider]

Hey fellow geeks!!

I am trying to find out the IP address for our districts First Class server. The address that I am trying to point to is:

http://fc.sd36.bc.ca/login

I can find my own IP but how do you locate it for another website???

Thanks in advance

[FamilyJewels]

I looked it up. The IP address of that site is 127.0.0.1.

[Pennywise]

the troll saves the day

[flowrider]

Hey fj are you sure about that or are you just jacking me around again?

Isn't 127.0.0.1 just a default to nowhere IP address?

What did you use to look it up?

[FamilyJewels]

$ man nslookup

Name
nslookup - query name servers interactively

Synopsis
nslookup [ - option ] ... host [ server ]

nslookup [ - option ] ... - [ server ]

nslookup

Description
nslookup sends queries to Internet domain name servers. It has two modes: interactive and non-interactive. Interactive mode allows the user to contact servers for information about various hosts and domains or to display a list of hosts in a domain. Non-interactive mode is used to display just the name and requested information for a host or domain.

Options
-option
Set the permissible options, as shown in the following list. These are the same options that the set command supports in interactive mode (see set in the Commands section for more complete descriptions).

all
List the current settings
class=classname
Restrict search according to the specified class

d2
Set exhaustive debug mode on
nod2 Set exhaustive debug mode off

debug Set debug mode on

nodebug
Set debug mode off

defname
Set domain-appending mode on

nodefname
Set domain-appending mode off

domain=string
Establish the appendable domain

ignoretc
Set it to ignore packet truncation errors

noignoretc
Set it to acknowledge packet truncation errors

Operands
host Inquires about the specified host. In this noninteractive command format, nslookup Does not prompt for additional commands.

-
Causes nslookup to prompt for more information, such as host names, before sending one or more queries.
server
Directs inquiries to the name server specified here in the command line rather than the one read from the /etc/resolv.conf file (see resolv.conf(4) ). server can be either a name or an Internet address. If the specified host cannot be reached, nslookup resorts to using the name server specified in /etc/resolv.conf.

Usage
Non-interactive Mode
Non-interactive mode is selected when the name or Internet address
of the host to be looked up is given as the first argument.

Within non-interactive mode, space-separated options can be specified. They must be entered before the host name, to be queried. Each option must be prefixed with a hyphen.

For example, to request extensive host information and to set the timeout to 10 seconds when inquiring about gypsy, enter:

example% nslookup-query=hinfo-timeout=10gypsy

To avoid repeated entry of an option that you almost always use, place a corresponding set command in a .nslookuprc file located inside your home directory. (See Commands for more information about set.) The .nslookuprc file can contain several set commands if each is followed by a <RETURN>.

Entering and Leaving Interactive Mode
Interactive mode is selected when

No arguments are supplied.
A `-' (hyphen) character is supplied as the host argument.
To exit from an interactive nslookup session, type Control-d or type the command exit followed by <RETURN>.

Supported Command Interactions
The commands associated with interactive mode are subject to various limitations and run-time conventions.

The maximum length of a command line is 255 characters. When the <RETURN> key is pressed, command-line execution begins.
While a command is running, its execution can be interrupted by typing
Control-c.

The first word entered on the command line must be the name of a nslookup command unless you wish to enter the name of a host to inquire about. Any unrecognized command is handled as a host name to inquire about. To force a command to be treated as a host name to be inquired about, precede it with a backslash character.

Commands
exit Exit the nslookup program.

help

?
Display a brief summary of commands.
host [ server
]

[FamilyJewels]

NS
The name server
PTR The host name if the query is in the form of an Internet address; otherwise the pointer to other information

SOA
The domain's start-of-authority information
TXT
The text information
UINFO The user information

WKS
The supported well-known services
(Other types specified in the RFC 1035 document are valid, but they are not as useful.)

recurse

norecurse
Enable or disable having to query other name servers before abandoning a search. By default, this feature is enabled.

ret[ry]=count
Set the maximum number of times to retry a request before abandoning a search. When a reply to a request is not received within a certain amount of time (changed with set timeout), the timeout period is doubled and the request is resent. The retry value controls how many times a request is resent before the request is aborted. The default for count is 4.

ro[ot]=host
Change the name of the root server to host. This affects the root command. The default root server is ns.internet.net.

t[timeout]=interval
Change the amount of time to wait for a reply to interval seconds. Each retry doubles the timeout period. The default interval is 5 seconds.

vc

novc Enable or disable the use of a virtual circuit when

sending requests to the server. By default, this feature is disabled.

root Change the default server to the server for the root of the domain name space. Currently, the host ns.internic.net is used; this command is a synonym for server ns.internic.net. The name of the root server can be changed with the set root command.

server domain

lserver domain
Change the default server to domain. lserver uses the initial server to look up information about domain while server uses the current default server. If an authoritative answer can not be found, the names of servers that might have the answer are returned.

view filename
Sort the output of previous ls command(s) and display it one text screenful at a time, similar to more(1) .

Examples
Example 1: Searching the Internet domain namespace.

To effectively search the Internet domain namespace, it helps to know its structure. At present, the Internet domain name-space is tree-structured, with one top level domain for each country except the U.S.A. There are also some traditional top level domains, not explicitly tied to any particular country. These include:

COM
Commercial establishments
EDU
Educational institutions
ORG
Not-for-profit organizations
GOV
Government agencies
MIL
MILNET hosts
If you are looking for a specific host, you need to know something about the host's organization in order to determine the top-level domain that it belongs to. For instance, if you want to find the Internet address of a machine at UCLA, do the following:

Connect with the root server using the root command.
The root server of the name space has knowledge of the top-level domains.
Since UCLA is a university, its domain name is
ucla.edu. Connect with a server for the ucla.edu domain with the command server ucla.edu. The response produces the names of hosts that act as servers for that domain. Note: the root server does not have information about ucla.edu, but knows the names and addresses of hosts that do. Once located by the root server, all future queries will be sent to the UCLA name server.
To request information about a particular host in the
domain (for instance, locus), just type the host name. To request a listing of hosts in the UCLA domain, use the ls command. The ls command requires a domain name (in this case, ucla.edu) as an argument.
If you are connected with a name server that handles more than one domain, all lookups for host names must be fully specified with its domain. For instance, the domain harvard.edu is served by seismo.css.gov, which also services the css.gov and cornell.edu domains. A lookup request for the host aiken in the harvard.edu domain must be specified as aiken.harvard.edu. However, the set domain=name and set defname commands can be used to automatically append a domain name to each request.

After a successful lookup of a host, use the finger(1) command to see who is on the system, or to finger a specific person. (finger requires the type to be A.)

To get other information about the host, use the set querytype=value command to change the type of information desired and request another lookup.

Environment Variables
HOSTALIASES
References the file containing host aliases

LOCALDOMAIN
Overrides default domain
Exit Status
The process returns the following values:

0
On success.
1
On failure.
Files
/etc/resolv.conf
initial domain name and name server addresses

$HOME/.nslookuprc
initial option commands

/usr/lib/nslookup.help
summary of commands

Attributes
See attributes(5) for descriptions of the following attributes:

__________________________________________________ __________
|
ATTRIBUTE TYPE | ATTRIBUTE VALUE |_____________________________|___________________ __________
| Availability
| SUNWcsu |_____________________________|___________________ __________
See Also
finger(1) , more(1) , in.named(1M) , nstest(1M) , resolver(3RESOLV) , resolv.conf(4) , attributes(5)

Mockapetris, Paul, Domain Names - Concepts and Facilities, RFC 1034, Network Information Center, SRI International, Menlo Park, Calif., November 1987.

Mockapetris, Paul, Domain Names - Implementation and Specif_ication, RFC 1035, Network Information Center, SRI International, Menlo Park, Calif., November 1987.

Diagnostics
If the lookup request is successful, an error message is produced. Possible errors are:

Timed out
The server did not respond to a request after a certain amount of time (changed with set timeout=value) and a certain number of retries (changed with set retry=value).

No response from server
No name server is running on the server machine.

No records
The server does not have resource records of the current query type for the host, although the host name is valid. The query type is specified with the set querytype command.

Non-existent domain
The host or domain name does not exist.

Connection refused

Network is unreachable
The connection to the name or finger server can not be made at the current time. This error commonly occurs with ls and finger requests.

Server failure
The name server found an internal inconsistency in its database and could not return a valid answer.

Refused
The name server refused to service the request.

Format error
The name server found that the request packet was not in the proper format. This may indicate an error in nslookup.

[flowrider]

good lord did you just type all that out???

Ok so the ip is 127.0.0.1

so how should I insert it into the program that I am using if what I would normally enter is: fc.sd36.bc.ca ?


Should I have asked for the IP of fc.sd36.bc.ca instead???


Thanks fj for the exhaustive answer. Please answer this last one please.

thx

[FamilyJewels]

C:\>nslookup fc.sd36.bc.ca
Server: helium.bc.tac.net
Address: 209.53.4.130

Non-authoritative answer:
Name: fc.sd36.bc.ca
Address: 207.23.197.242


C:\>

[flowrider]

Sweet. Thanks FJ

5 for you

[snow_homie]

Originally posted by Pennywise
the troll saves the day

[TeeDawg]

that's odd...
i got:

>nslookup fc.sd36.bc.ca
Server: 24.71.223.145
Address: 24.71.223.145#53

[TeeDawg]

and i tried again....
> nslookup fc.sd36.bc.ca
server:sfc.sd36.bc.ca
address:207.23.197.242

looks like the first time i got my default server IP....
oh well

[flowrider]

Don't know TeeDawg why you got those funny numbers for the IP but the one that FJ got me and your second set of numbers did the trick for me.

[.glib]

On the other side of things, you could just ping it. Ping a hostname, it gives you the IP its pinging too.

[flowrider]

I tried pinging and it could resolve the host name. Then I tried Neotrace. It gave me multiple IP's and none of them worked. You should try Neotrace if you can. Cool tracking program!