--- service: a.root-servers.net start-period: '2016-01-05T00:00:00Z' end-period: '2016-01-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4936899257 dns-udp-queries-received-ipv6: 222791800 dns-tcp-queries-received-ipv4: 54959550 dns-tcp-queries-received-ipv6: 1665094 dns-udp-responses-sent-ipv4: 4931974166 dns-udp-responses-sent-ipv6: 223176208 dns-tcp-responses-sent-ipv4: 47028429 dns-tcp-responses-sent-ipv6: 180910