--- service: a.root-servers.net start-period: '2016-06-16T00:00:00Z' end-period: '2016-06-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5377003334 dns-udp-queries-received-ipv6: 466501682 dns-tcp-queries-received-ipv4: 78212270 dns-tcp-queries-received-ipv6: 5697493 dns-udp-responses-sent-ipv4: 5376533118 dns-udp-responses-sent-ipv6: 466178564 dns-tcp-responses-sent-ipv4: 66042215 dns-tcp-responses-sent-ipv6: 323300