--- service: i.root-servers.net start-period: '2015-03-06T00:00:00Z' end-period: '2015-03-07T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3617246373 dns-udp-queries-received-ipv6: 261639704 dns-tcp-queries-received-ipv4: 7722546 dns-tcp-queries-received-ipv6: 233281 dns-udp-responses-sent-ipv4: 3566433164 dns-udp-responses-sent-ipv6: 265959134 dns-tcp-responses-sent-ipv4: 7776579 dns-tcp-responses-sent-ipv6: 239714