--- service: a.root-servers.net start-period: '2015-01-26T00:00:00Z' end-period: '2015-01-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3089706952 dns-udp-queries-received-ipv6: 223782163 dns-tcp-queries-received-ipv4: 17799701 dns-tcp-queries-received-ipv6: 2436464 dns-udp-responses-sent-ipv4: 3089340536 dns-udp-responses-sent-ipv6: 223735802 dns-tcp-responses-sent-ipv4: 16371870 dns-tcp-responses-sent-ipv6: 1441043