--- service: i.root-servers.net start-period: '2014-11-20T00:00:00Z' end-period: '2014-11-21T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3309384539 dns-udp-queries-received-ipv6: 226698540 dns-tcp-queries-received-ipv4: 6651616 dns-tcp-queries-received-ipv6: 192331 dns-udp-responses-sent-ipv4: 3257982436 dns-udp-responses-sent-ipv6: 226597683 dns-tcp-responses-sent-ipv4: 6762901 dns-tcp-responses-sent-ipv6: 191331