--- service: a.root-servers.net start-period: '2015-10-30T00:00:00Z' end-period: '2015-10-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3387989303 dns-udp-queries-received-ipv6: 320865361 dns-tcp-queries-received-ipv4: 22309875 dns-tcp-queries-received-ipv6: 4797252 dns-udp-responses-sent-ipv4: 3395488100 dns-udp-responses-sent-ipv6: 319479842 dns-tcp-responses-sent-ipv4: 19345478 dns-tcp-responses-sent-ipv6: 1949962