--- service: a.root-servers.net start-period: '2016-03-04T00:00:00Z' end-period: '2016-03-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4074523752 dns-udp-queries-received-ipv6: 343937479 dns-tcp-queries-received-ipv4: 29171908 dns-tcp-queries-received-ipv6: 3471968 dns-udp-responses-sent-ipv4: 4065047253 dns-udp-responses-sent-ipv6: 343972764 dns-tcp-responses-sent-ipv4: 24666704 dns-tcp-responses-sent-ipv6: 273595