--- service: d.root-servers.net start-period: '2016-04-25T00:00:00Z' end-period: '2016-04-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4711564786 dns-udp-queries-received-ipv6: 666867226 dns-tcp-queries-received-ipv4: 38730884 dns-tcp-queries-received-ipv6: 627250 dns-udp-responses-sent-ipv4: 4692743514 dns-udp-responses-sent-ipv6: 666614009 dns-tcp-responses-sent-ipv4: 38653028 dns-tcp-responses-sent-ipv6: 627140