--- service: a.root-servers.net start-period: '2016-12-03T00:00:00Z' end-period: '2016-12-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4717178406 dns-udp-queries-received-ipv6: 434426870 dns-tcp-queries-received-ipv4: 192783456 dns-tcp-queries-received-ipv6: 7388804 dns-udp-responses-sent-ipv4: 4700665159 dns-udp-responses-sent-ipv6: 433954155 dns-tcp-responses-sent-ipv4: 193817293 dns-tcp-responses-sent-ipv6: 7382021