--- service: a.root-servers.net start-period: '2015-03-10T00:00:00Z' end-period: '2015-03-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3123423448 dns-udp-queries-received-ipv6: 234925250 dns-tcp-queries-received-ipv4: 19940961 dns-tcp-queries-received-ipv6: 2273649 dns-udp-responses-sent-ipv4: 3120186209 dns-udp-responses-sent-ipv6: 234759077 dns-tcp-responses-sent-ipv4: 17587688 dns-tcp-responses-sent-ipv6: 1315467