--- service: i.root-servers.net start-period: '2016-02-04T00:00:00Z' end-period: '2016-02-05T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4780853698 dns-udp-queries-received-ipv6: 377323757 dns-tcp-queries-received-ipv4: 25540314 dns-tcp-queries-received-ipv6: 757480 dns-udp-responses-sent-ipv4: 4710429527 dns-udp-responses-sent-ipv6: 383615557 dns-tcp-responses-sent-ipv4: 25456975 dns-tcp-responses-sent-ipv6: 760428