--- service: a.root-servers.net start-period: '2015-11-16T00:00:00Z' end-period: '2015-11-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3923584822 dns-udp-queries-received-ipv6: 314203923 dns-tcp-queries-received-ipv4: 20222082 dns-tcp-queries-received-ipv6: 2006526 dns-udp-responses-sent-ipv4: 3915692309 dns-udp-responses-sent-ipv6: 313603452 dns-tcp-responses-sent-ipv4: 17160334 dns-tcp-responses-sent-ipv6: 262025