--- service: a.root-servers.net start-period: '2014-09-15T00:00:00Z' end-period: '2014-09-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1927066665 dns-udp-queries-received-ipv6: 145643042 dns-tcp-queries-received-ipv4: 13216813 dns-tcp-queries-received-ipv6: 1677353 dns-udp-responses-sent-ipv4: 1930370856 dns-udp-responses-sent-ipv6: 145648886 dns-tcp-responses-sent-ipv4: 12599878 dns-tcp-responses-sent-ipv6: 1006276