--- service: a.root-servers.net start-period: '2015-11-24T00:00:00Z' end-period: '2015-11-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3745284579 dns-udp-queries-received-ipv6: 304593860 dns-tcp-queries-received-ipv4: 21954463 dns-tcp-queries-received-ipv6: 1766889 dns-udp-responses-sent-ipv4: 3748070145 dns-udp-responses-sent-ipv6: 304716964 dns-tcp-responses-sent-ipv4: 18048402 dns-tcp-responses-sent-ipv6: 271148