--- service: a.root-servers.net start-period: '2015-01-24T00:00:00Z' end-period: '2015-01-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2569637844 dns-udp-queries-received-ipv6: 210338960 dns-tcp-queries-received-ipv4: 16050781 dns-tcp-queries-received-ipv6: 2323364 dns-udp-responses-sent-ipv4: 2568768150 dns-udp-responses-sent-ipv6: 210281107 dns-tcp-responses-sent-ipv4: 14867309 dns-tcp-responses-sent-ipv6: 1618823