--- service: a.root-servers.net start-period: '2015-04-24T00:00:00Z' end-period: '2015-04-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2920991612 dns-udp-queries-received-ipv6: 234894398 dns-tcp-queries-received-ipv4: 20509097 dns-tcp-queries-received-ipv6: 2813779 dns-udp-responses-sent-ipv4: 2911261833 dns-udp-responses-sent-ipv6: 234463455 dns-tcp-responses-sent-ipv4: 17175645 dns-tcp-responses-sent-ipv6: 1556944