[+] New version of Web Proxy Checker Pro allows to check IPs and IP ranges against RBL (DNSBL) lists. Additionaly you can perform rDNS (Reverse DNS) check of your list of IPs and IP ranges.

To check IP ranges with Web Proxy Checker Pro:

• Enter IPs or IP ranges in "Proxies/Files/URLs". Also you can enter path to the file with IPs or URL here. Format of IP ranges is: ip1-ip2.
• Select Load and combine mode.
• Turn on "Check IPs" option.
• Select "RBL check" option and list of RBLs to check.