--- service: a.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: 5400168223 dns-udp-queries-received-ipv6: 393367486 dns-tcp-queries-received-ipv4: 72978348 dns-tcp-queries-received-ipv6: 3408732 dns-udp-responses-sent-ipv4: 5400663836 dns-udp-responses-sent-ipv6: 392984516 dns-tcp-responses-sent-ipv4: 61888570 dns-tcp-responses-sent-ipv6: 323324