--- service: a.root-servers.net start-period: '2015-01-03T00:00:00Z' end-period: '2015-01-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2513783338 dns-udp-queries-received-ipv6: 185326585 dns-tcp-queries-received-ipv4: 15613129 dns-tcp-queries-received-ipv6: 2289150 dns-udp-responses-sent-ipv4: 2513275207 dns-udp-responses-sent-ipv6: 185296175 dns-tcp-responses-sent-ipv4: 14511571 dns-tcp-responses-sent-ipv6: 1600468