--- service: a.root-servers.net start-period: '2016-02-01T00:00:00Z' end-period: '2016-02-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4247885039 dns-udp-queries-received-ipv6: 276617307 dns-tcp-queries-received-ipv4: 51792078 dns-tcp-queries-received-ipv6: 1827571 dns-udp-responses-sent-ipv4: 4245145548 dns-udp-responses-sent-ipv6: 275028679 dns-tcp-responses-sent-ipv4: 44626598 dns-tcp-responses-sent-ipv6: 216601