B Root

Data Collection Methodology

Some notes about our data collection.

RSSAC-002

Our RSSAC-002 statistics are known to sometimes be slightly under their actual values. They are complete on normal days, but they undercount during burst periods, such as during a denial-of-service attack. (This problem is due to an interaction between our data collection method and RSSAC-002 processing in Hedgehog; we expect to correct this problem in early 2016.)

We publish RSSAC-002 data two days after collection completes.

Days are midnight-to-midnight, UTC timezone.