PHP/MySql tool for checking IP or list of IP address for any blacklist . This tool is useful for email server / bulk mailing systems to check whether their Server IP is black listed in any of the blacklist servers . These blacklist servers are commonly known as Realtime Blacklist (RBL or DNSBL) . Ip BlackList Checker is bundled with list of RBL servers , and a checker program which runs for 24 hours and check the given IP address list against each of the RBL in regular intervals . Once it finds a blacklist, the information will be sent to a pre-configured email address . This tool is easy to handle . Ip Blacklist Checker has options to add any number of IP address or IP range to check. Also it can accommodate any number of RBL server list in addition to default list . Details of IP check process is available in the tool and in log files also . This is a web based application which needs PHP / MYSQL and Apache installation with SSH (shell access) support. This is very simple tool for checking your ip for any blacklist . Commonly used for email servers where they will check their sending ip address for a blacklist. If the ip is blacklisted, email from those servers will be marked as spams by most of the email clients / mail boxes. Ip Blacklist Checker will run continuously and notify you , if any blacklist found on any servers. We are inspired by similar tool from mxtoolbox.com and developed a simple installable piece of software for checking ip address .