NTP Research at Team Cymru

If you arrived here to inquire about why this host was probing your network, please read on. We are Team Cymru, security research think tank dedicated to making the Internet more secure. The following hosts are part of our research that helps us conduct Internet NTP security assessments, diagnostics and measurement tests. All packets originating from these servers should be benign and relatively infrequent:

If you are a NTP administrator or other similar contact for an autonomous system (AS), a set of netblocks or NTP servers on the Internet and are interested in the securing your NTP infrastructure, we provide a number of free services you may be interested. Feel free to contact us at support@cymru.com [PGP Key] if you have questions or would like to obtain a data feed.