---
service: i.root-servers.net
start-period: '2016-05-19T00:00:00Z'
end-period: '2016-05-20T00:00:01Z'
metric: unique-sources
  num-sources-ipv4: 3194936
  num-sources-ipv6: 196688
  num-sources-ipv6-aggregate: 127145