RBL Watcher allows users to check and monitor IP addresses against 77 Real-time Blackhole Lists (RBLs). These are lists of IP addresses linked to activities such as spamming. Developers can use the RBL Watcher API to retrieve all of the IP addresses they're watching and, of those, the ones that are blacklisted and the ones that are not blacklisted. They can also add or remove an IP address from their watchlist or retrieve details on a given IP address.
The following is a list of sample source code snippets that matched your search term. Source code snippets are chunks of source code that were found out on the Web that you can cut and paste into your own source code. Whereas most of the sample source code we've curated for our directory is for consuming APIs, we occasionally find something interesting on the API provider side of things. If you know of some sample source code that would be of interest to the ProgrammableWeb community, we'd like to know about it. Be sure to check our guidelines for making contributions to ProgrammableWeb.