--- service: a.root-servers.net start-period: '2015-10-06T00:00:00Z' end-period: '2015-10-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3381471951 dns-udp-queries-received-ipv6: 312063249 dns-tcp-queries-received-ipv4: 21811685 dns-tcp-queries-received-ipv6: 9587505 dns-udp-responses-sent-ipv4: 3381970504 dns-udp-responses-sent-ipv6: 310180491 dns-tcp-responses-sent-ipv4: 18259198 dns-tcp-responses-sent-ipv6: 7600328