--- service: i.root-servers.net start-period: '2014-05-03T00:00:00Z' end-period: '2014-05-04T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2398316300 dns-udp-queries-received-ipv6: 175896133 dns-tcp-queries-received-ipv4: 5258601 dns-tcp-queries-received-ipv6: 245350 dns-udp-responses-sent-ipv4: 2348957308 dns-udp-responses-sent-ipv6: 178833487 dns-tcp-responses-sent-ipv4: 5276472 dns-tcp-responses-sent-ipv6: 244199