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Special Forums IP Networking Whois or nslookup.. for domain availability? Post 302868855 by postcd on Tuesday 29th of October 2013 03:47:15 AM
Old 10-29-2013
Signal domain availability, requent checking?

Hi, i want to make linux bash script which will periodically check for certain domain availability, i mean like every 100miliseconds.

I want to ask which command i need to use, so the result is not cached and i dont cause any inappropriate overload?

i see:
whois domainname.com (when No entries found., domain is available)
nslookup -type=ns domainname.com (when cant find nameservers, domain is expired or available)

So my questions what kind of command do you please suggest?

Does these whois providers have any limits above which they ban your IP?

Last edited by postcd; 10-29-2013 at 06:03 AM..
 

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whois(1)							   User Commands							  whois(1)

NAME
whois - Internet user name directory service SYNOPSIS
whois [-h host] identifier DESCRIPTION
whois searches for an Internet directory entry for an identifier which is either a name (such as ``Smith'') or a handle (such as ``SRI- NIC''). To force a name-only search, precede the name with a period; to force a handle-only search, precede the handle with an exclamation point. To search for a group or organization entry, precede the argument with * (an asterisk). The entire membership list of the group will be displayed with the record. You may of course use an exclamation point and asterisk, or a period and asterisk together. EXAMPLES
Example 1: Using The whois Command The command: example% whois Smith looks for the name or handle SMITH. The command: example% whois !SRI-NIC looks for the handle SRI-NIC only. The command: example% whois .Smith, John looks for the name JOHN SMITH only. Adding ... to the name or handle argument will match anything from that point; that is, ZU ... will match ZUL, ZUM, and so on. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWrcmdc | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 6 Nov 2000 whois(1)
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