--- service: a.root-servers.net start-period: '2016-05-07T00:00:00Z' end-period: '2016-05-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3848795929 dns-udp-queries-received-ipv6: 317554495 dns-tcp-queries-received-ipv4: 38007144 dns-tcp-queries-received-ipv6: 5817482 dns-udp-responses-sent-ipv4: 3848277433 dns-udp-responses-sent-ipv6: 316694504 dns-tcp-responses-sent-ipv4: 31631738 dns-tcp-responses-sent-ipv6: 1735627