---
service: i.root-servers.net
start-period: '2013-05-20T00:00:00Z'
end-period: '2013-05-20T23:59:59Z'
metric: unique-sources
  num-sources-ipv4: 3066596
  num-sources-ipv6: 73417
  num-sources-ipv6-aggregate: 43197