You can have a look at my limit_access module:
https://github.com/yaoweibin/nginx_limit_access_module

It can add/delete/display the banned IP. But it only can add single
IP, not a range of IP.

2012/3/30 Micheal Wolfskill <tdgh2323@hotmail.com>:
> Hello All,
>
> I have this inside my httpd {}.. Is there anyway to list the IPs that have
> been banned?  If not what is the closest way to do this?
>
>  limit_req_zone $limit zone=notabot:5m rate=200r/s;
> limit_req zone=notabot burst=200 nodelay;
>
>     geo $notabot {
>         default 1;
>         #google
>         64.233.160.0/19 0;
>         65.52.0.0/14 0;
>         66.102.0.0/20 0;
>         66.249.64.0/19 0;
>         72.14.192.0/18 0;
>         74.125.0.0/16 0;
>         209.85.128.0/17 0;
>         216.239.32.0/19 0;
>         #My IPs
>         127.0.0.1/32 0;
>         200.122.149.9 0;
>     }
>     map $notabot $limit {
>         1 $binary_remote_addr;
>         0 "";
>     }
>
> Thanks
> --Mike
>
>
>
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