--- service: i.root-servers.net start-period: '2016-04-25T00:00:00Z' end-period: '2016-04-26T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5645378475 dns-udp-queries-received-ipv6: 478849211 dns-tcp-queries-received-ipv4: 27750109 dns-tcp-queries-received-ipv6: 961755 dns-udp-responses-sent-ipv4: 5589301862 dns-udp-responses-sent-ipv6: 483736575 dns-tcp-responses-sent-ipv4: 27507061 dns-tcp-responses-sent-ipv6: 967777