--- service: a.root-servers.net start-period: '2016-01-11T00:00:00Z' end-period: '2016-01-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4695547147 dns-udp-queries-received-ipv6: 323408831 dns-tcp-queries-received-ipv4: 57755862 dns-tcp-queries-received-ipv6: 2322239 dns-udp-responses-sent-ipv4: 4692458911 dns-udp-responses-sent-ipv6: 324323869 dns-tcp-responses-sent-ipv4: 49272137 dns-tcp-responses-sent-ipv6: 253442