When I need to clear out some IP space and I want to be sure everything is gone, I normally startup arpwatch in a station in the network in question and look at it's results. This might help you as well.


Met vriendelijke groet / Best regards,

Jan Hugo Prins
Infra and Isilon storage consultant


E: jprins@betterbe.com
T: +31-53-4800694
M: +31-6-26358951
S: jhaprins
W: www.betterbe.com

On 11/04/2013 08:36 PM, Jahangir Asadi wrote:
Dear Sir or Madam


    I have some customers who I have allocated high band width with wide ranges of IPv4 addresses to. Because of lack of IPv4, I would like to see that how many IPs they are using. It would be grateful if you  tell me how can I do this and what soft ware I have to use to monitor the used IPs.


    I would like to thank you in advance and I am looking forward to hearing from you soon.


Regards.

Jahangir Asadi

Network Manager of Padidar Information Technology

(Your LIR Member and the owner of AS198357)