Shell Programming and Scripting

I am looking for a free whois lookup tool or some "scripting help" that will give uniform result for whois lookup from the linux command line.

Currently:
whois of a .co.nz domain results nameserver as follows.

Code:

ns_name_01: ns1.domain.co.nz

ns_name_02: ns2.domain.co.nz

While that of a .net domain result as follows

Code:

DNS Servers:
      ns1.domain.net
      ns2.domain.net

And that of .com results in

Code:

Domain servers in listed order:
    ns1.domain.com
    ns2.domain.com

I need a uniform result for the whois nameserver records.
Example: All in the following format:

Code:

Nameserver: ns1.domain.tld
Nameserver: ns2.domain.tld

Can anyone help?

I tried whois domain.com@whois.tucows.com, But after few lookups, it result in the error

Code:

Maximum Daily connection limit reached. Lookup refused.

---------- Post updated 09-12-11 at 03:49 PM ---------- Previous update was 09-11-11 at 08:28 PM ----------

Can anyone help?