---
service: i.root-servers.net
start-period: '2013-06-20T00:00:00Z'
end-period: '2013-06-21T00:00:01Z'
metric: unique-sources
  num-sources-ipv4: 2936909
  num-sources-ipv6: 72119
  num-sources-ipv6-aggregate: 42767