--- service: a.root-servers.net start-period: '2014-04-28T00:00:00Z' end-period: '2014-04-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2599204314 dns-udp-queries-received-ipv6: 113786285 dns-tcp-queries-received-ipv4: 13148636 dns-tcp-queries-received-ipv6: 1382357 dns-udp-responses-sent-ipv4: 2598476367 dns-udp-responses-sent-ipv6: 113744985 dns-tcp-responses-sent-ipv4: 13168305 dns-tcp-responses-sent-ipv6: 213