---
service: i.root-servers.net
start-period: '2013-05-18T00:00:00Z'
end-period: '2013-05-19T00:00:02Z'
metric: unique-sources
  num-sources-ipv4: 2622004
  num-sources-ipv6: 72657
  num-sources-ipv6-aggregate: 43310