--- service: a.root-servers.net start-period: '2016-03-16T00:00:00Z' end-period: '2016-03-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4123235017 dns-udp-queries-received-ipv6: 191389060 dns-tcp-queries-received-ipv4: 64694795 dns-tcp-queries-received-ipv6: 2386052 dns-udp-responses-sent-ipv4: 4126012861 dns-udp-responses-sent-ipv6: 192826834 dns-tcp-responses-sent-ipv4: 55199432 dns-tcp-responses-sent-ipv6: 155176