--- service: a.root-servers.net start-period: '2014-05-01T00:00:00Z' end-period: '2014-05-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2215029537 dns-udp-queries-received-ipv6: 102448277 dns-tcp-queries-received-ipv4: 11571845 dns-tcp-queries-received-ipv6: 1353164 dns-udp-responses-sent-ipv4: 2214251691 dns-udp-responses-sent-ipv6: 102441105 dns-tcp-responses-sent-ipv4: 11595983 dns-tcp-responses-sent-ipv6: 621