---
service: a.root-servers.net
start-period: '2016-05-21T00:00:00Z'
end-period: '2016-05-21T23:59:59Z'
metric: traffic-volume
dns-udp-queries-received-ipv4: 6378967477
dns-udp-queries-received-ipv6: 384066598
dns-tcp-queries-received-ipv4: 76781848
dns-tcp-queries-received-ipv6: 4910280
dns-udp-responses-sent-ipv4: 6378607554
dns-udp-responses-sent-ipv6: 383864243
dns-tcp-responses-sent-ipv4: 65164224
dns-tcp-responses-sent-ipv6: 320065