--- service: a.root-servers.net start-period: '2014-01-13T00:00:00Z' end-period: '2014-01-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1335968330 dns-udp-queries-received-ipv6: 45313713 dns-tcp-queries-received-ipv4: 7335848 dns-tcp-queries-received-ipv6: 1097560 dns-udp-responses-sent-ipv4: 1334746590 dns-udp-responses-sent-ipv6: 45305537 dns-tcp-responses-sent-ipv4: 7328206 dns-tcp-responses-sent-ipv6: 141