31.15.12.19 is an IP address in 25234 owned by Active 24 and located in CZ. This page provides details on the DNS resolutions to the IP, the malware samples communicating with it and mentions in APT reports.
Reports, passive DNS (pDNS) records, Uniform Resource Locators (URLs) and malware samples associated with 31.15.12.19.
Map of the location associated with 31.15.12.19.
Note: if the roller icon stops rolling, this means there is a significant number of results being returned. Patience my friend.