---
version: rssac002v3
service: d.root-servers.net
start-period: '2019-12-31T00:00:00Z'
end-period: '2019-12-31T23:59:59Z'
metric: unique-sources
num-sources-ipv4: 3481555
num-sources-ipv6: 383866
num-sources-ipv6-aggregate: 246758