--- service: a.root-servers.net start-period: '2016-01-03T00:00:00Z' end-period: '2016-01-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4271509345 dns-udp-queries-received-ipv6: 204243394 dns-tcp-queries-received-ipv4: 56306985 dns-tcp-queries-received-ipv6: 1472523 dns-udp-responses-sent-ipv4: 4263797453 dns-udp-responses-sent-ipv6: 204525564 dns-tcp-responses-sent-ipv4: 48054100 dns-tcp-responses-sent-ipv6: 183558