--- service: a.root-servers.net start-period: '2016-07-25T00:00:00Z' end-period: '2016-07-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4036922579 dns-udp-queries-received-ipv6: 496995407 dns-tcp-queries-received-ipv4: 96500049 dns-tcp-queries-received-ipv6: 8786413 dns-udp-responses-sent-ipv4: 4036427429 dns-udp-responses-sent-ipv6: 496244214 dns-tcp-responses-sent-ipv4: 77745849 dns-tcp-responses-sent-ipv6: 1337577