Systems and methods are provided for identifying network addresses and/or IDs of a deduplicated list among network data, machine data, and/or events derived from network data and/or machine data, and for identifying notable events by searching for the presence of network addresses and/or network IDs that are deduplicated across lists received from multiple external sources. One method includes receiving a plurality of lists of network locations, wherein each list is received from over a network, wherein each of the network locations includes a domain name or an IP address, and wherein at least two of the plurality of lists each include a same network location; aggregating the plurality of lists of network locations into a deduplicated list of unique network locations; and searching network data or machine data for a network location included in the deduplicated list of unique network locations.