---
service: i.root-servers.net
start-period: '2013-05-22T00:00:00Z'
end-period: '2013-05-23T00:00:01Z'
metric: unique-sources
  num-sources-ipv4: 3173274
  num-sources-ipv6: 76138
  num-sources-ipv6-aggregate: 45059