--- service: a.root-servers.net start-period: '2016-05-12T00:00:00Z' end-period: '2016-05-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4868581832 dns-udp-queries-received-ipv6: 370663838 dns-tcp-queries-received-ipv4: 75053466 dns-tcp-queries-received-ipv6: 4848879 dns-udp-responses-sent-ipv4: 4868150526 dns-udp-responses-sent-ipv6: 370136520 dns-tcp-responses-sent-ipv4: 63761190 dns-tcp-responses-sent-ipv6: 306577