---
service: h.root-servers.net
metric: rcode-volume
start-period: '2015-05-21T00:00:00Z'
end-period: '2015-05-21T23:59:59Z'
rcodes:
  0: 253075515
  1: 457651
  16: 2
  2: 32
  3: 484340545
  4: 573170
  5: 99453
  9: 4